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RFC 990 - Assigned numbers

(Formats: TXT)

(Updated By: RFC 997)

(Obsoleted By: RFC 1010)

Network Working Group                                        J. Reynolds
Request for Comments:  990                                     J. Postel
Obsoletes RFCs:  960, 943, 923, 900,                       November 1986
870, 820, 790, 776, 770, 762, 758,
755, 750, 739, 604, 503, 433, 349
Obsoletes IENs:  127, 117, 93

                            ASSIGNED NUMBERS

Status of this Memo

   This memo is an official status report on the numbers used in
   protocols in the ARPA-Internet community.  Distribution of this memo
   is unlimited.


   This Network Working Group Request for Comments documents the
   currently assigned values from several series of numbers used in
   network protocol implementations.  This RFC will be updated
   periodically, and in any case current information can be obtained
   from Joyce Reynolds.  The assignment of numbers is also handled by
   Joyce.  If you are developing a protocol or application that will
   require the use of a link, socket, port, protocol, network number,
   etc., please contact Joyce to receive a number assignment.

      Joyce K. Reynolds
      USC - Information Sciences Institute
      4676 Admiralty Way
      Marina del Rey, California  90292-6695

      Phone: (213) 822-1511


   Most of the protocols mentioned here are documented in the RFC series
   of notes.  Some of the items listed are undocumented.  Further
   information on protocols can be found in the memo "Official
   ARPA-Internet Protocols" [114].  The more prominent and more
   generally used are documented in the "DDN Protocol Handbook" [46]
   prepared by the NIC.  Other collections of older or obsolete
   protocols are contained in the "Internet Protocol Transition Workbook
   [47], or in the "ARPANET Protocol Handbook" [48].  For further
   information on ordering the complete 1985 DDN Protocol Handbook,
   write: SRI International, DDN Network Information Center, Room EJ291,
   333 Ravenswood Avenue, Meno Park, California, 94025.  Or
   call: 1-800-235-3155.

Reynolds & Postel                                               [Page 1]

RFC 990                                                    November 1986
Assigned Numbers

   In the entries below the name and mailbox of the responsible
   individual is indicated.  The bracketed entry, e.g., [nn,iii], at the
   right hand margin of the page indicates a reference for the listed
   protocol, where the number ("nn") cites the document and the letters
   ("iii") cites the person.  Whenever possible, the letters are a NIC
   Ident as used in the WhoIs (NICNAME) service.

   The convention in the documentation of Internet Protocols is to
   express numbers in decimal and to picture data in "big-endian" order
   [131].  That is, fields are described left to right, with the most
   significant octet on the left and the least significant octet on the

   The order of transmission of the header and data described in this
   document is resolved to the octet level.  Whenever a diagram shows a
   group of octets, the order of transmission of those octets is the
   normal order in which they are read in English.  For example, in the
   following diagram the octets are transmitted in the order they are

    0                   1                   2                   3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   |       1       |       2       |       3       |       4       |
   |       5       |       6       |       7       |       8       |
   |       9       |      10       |      11       |      12       |

                      Transmission Order of Bytes

   Whenever an octet represents a numeric quantity the left most bit in
   the diagram is the high order or most significant bit.  That is, the
   bit labeled 0 is the most significant bit.  For example, the
   following diagram represents the value 170 (decimal).

                            0 1 2 3 4 5 6 7
                           |1 0 1 0 1 0 1 0|

                          Significance of Bits

   Similarly, whenever a multi-octet field represents a numeric quantity

Reynolds & Postel                                               [Page 2]

RFC 990                                                    November 1986
Assigned Numbers

   the left most bit of the whole field is the most significant bit.
   When a multi-octet quantity is transmitted the most significant octet
   is transmitted first.

Reynolds & Postel                                               [Page 3]

RFC 990                                                    November 1986
Network Numbers

                        ASSIGNED NETWORK NUMBERS

   The network numbers listed here are used as internet addresses by the
   Internet Protocol (IP) [46,101].  The IP uses a 32-bit address field
   and divides that address into a network part and a "rest" or local
   address part.  The division takes 3 forms or classes.

      The first type of address, or class A, has a 7-bit network number
      and a 24-bit local address.  The highest-order bit is set to 0.
      This allows 128 class A networks.

                           1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      |0|   NETWORK   |                Local Address                  |

                             Class A Address

      The second type of address, class B, has a 14-bit network number
      and a 16-bit local address.  The two highest-order bits are set to
      1-0.  This allows 16,384 class B networks.

                           1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      |1 0|           NETWORK         |          Local Address        |

                             Class B Address

      The third type of address, class C, has a 21-bit network number
      and a 8-bit local address.  The three highest-order bits are set
      to 1-1-0.  This allows 2,097,152 class C networks.

                           1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      |1 1 0|                    NETWORK              | Local Address |

                             Class C Address

Reynolds & Postel                                               [Page 4]

RFC 990                                                    November 1986
Network Numbers

      The fourth type of address, class D, is used as a multicast
      address [44].  The four highest-order bits are set to 1-1-1-0.

                           1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      |1 1 1 0|                  multicast address                    |

                             Class D Address

      Note:  No addresses are allowed with the four highest-order bits
      set to 1-1-1-1.  These addresses, called "class E", are reserved.

   One commonly used notation for internet host addresses divides the
   32-bit address into four 8-bit fields and specifies the value of each
   field as a decimal number with the fields separated by periods.  This
   is called the "dotted decimal" notation.  For example, the internet
   address of B.ISI.EDU in dotted decimal is, or

   The dotted decimal notation will be used in the listing of assigned
   network numbers.  The class A networks will have nnn.rrr.rrr.rrr, the
   class B networks will have nnn.nnn.rrr.rrr, and the class C networks
   will have nnn.nnn.nnn.rrr, where nnn represents part or all of a
   network number and rrr represents part or all of a local address.

   There are four catagories of users of Internet Addresses: Research,
   Defense, Government (Non-Defense), and Commercial.  To reflect the
   allocation of network identifiers among the categories, a
   one-character code is placed to the left of the network number: R for
   Research, D for Defense, G for Government, and C for Commercial (see
   Appendix A for further details on this division of the network

   Network numbers are assigned for networks that are connected to the
   ARPA-Internet and DDN-Internet, and for independent networks that use
   the IP family protocols (these are usually commercial).  These
   independent networks are marked with an asterisk preceding the

   The administrators of independent networks must apply separately for
   permission to interconnect their network with either the
   ARPA-Internet of the DDN-Internet.  Independent networks should not
   be listed in the working tables of either the ARPA-Internet or
   DDN-Internet hosts or gateways.

Reynolds & Postel                                               [Page 5]

RFC 990                                                    November 1986
Network Numbers

   For various reasons, the assigned numbers of networks are sometimes
   changed.  To ease the transition the old number will be listed for a
   transition period as well.  These "old number" entries will be marked
   with a "T" following the number and preceding the name, and the
   network name will be suffixed "-TEMP".

   Special Addresses:

      In certain contexts, it is useful to have fixed addresses with
      functional significance rather than as identifiers of specific

         The address zero is to be interpreted as meaning "this", as in
         "this network".

            For example, the address could be interpreted as
            meaning host 37 on this network.

         The address of all ones are to be interpreted as meaning "all",
         as in "all hosts".

            For example, the address could be interpreted
            as meaning all hosts on the network 128.9.

         The class A network number 127 is assigned the "loopback"
         function, that is, a datagram sent by a higher level protocol
         to a network 127 address should loop back inside the host.  No
         datagram "sent" to a network 127 address should ever appear on
         any network anywhere.

Reynolds & Postel                                               [Page 6]

RFC 990                                                    November 1986
Network Numbers

   Assigned Network Numbers

   Class A Networks

      * Internet Address  Name          Network               References
      - ----------------  ----          -------               ----------
        000.rrr.rrr.rrr                 Reserved                   [JBP]
      R 004.rrr.rrr.rrr   SATNET        Atlantic Satellite Network [SHB]
      D 006.rrr.rrr.rrr T YPG-NET-TEMP  Yuma Proving Grounds    [10,BWA]
      D 007.rrr.rrr.rrr T EDN-TEMP      DCEC EDN                   [EC5]
      R 008.rrr.rrr.rrr T BBN-NET-TEMP  BBN Network               [JSG5]
      R 010.rrr.rrr.rrr   ARPANET       ARPANET                 [10,SA2]
      D 011.rrr.rrr.rrr   DODIIS        DoD INTEL INFO SYS         [AY7]
      C 012.rrr.rrr.rrr   ATT           ATT, Bell Labs            [MH12]
      C 013.rrr.rrr.rrr   XEROX-NET     XEROX Internet        [129,JNL1]
      C 014.rrr.rrr.rrr   PDN           Public Data Network       [REK4]
      R*015.rrr.rrr.rrr   HP-INTERNET   Hewlett-Packard-Internet   [BXR]
      R 018.rrr.rrr.rrr T MIT-TEMP      MIT Network        [23,113,DDC1]
      D 021.rrr.rrr.rrr   DDN-RVN       DDN-RVN                    [MLC]
      D 022.rrr.rrr.rrr   DISNET        DISNET                    [FLM2]
      D 023.rrr.rrr.rrr   DDN-TC-NET    DDN-TestCell-Network      [DH17]
      R 025.rrr.rrr.rrr   RSRE-EXP      RSRE                      [RNM1]
      D 026.rrr.rrr.rrr   MILNET        MILNET                    [FLM2]
      R 027.rrr.rrr.rrr T NOSC-LCCN-TEMPNOSC / LCCN                [RH6]
      R 028.rrr.rrr.rrr   WIDEBAND      Wide Band Satellite Net   [CJW2]
      D 029.rrr.rrr.rrr T MILX25-TEMP   MILNET X.25 Temp           [MLC]
      D 030.rrr.rrr.rrr T ARPAX25-TEMP  ARPA X.25 Temp             [MLC]
      G 031.rrr.rrr.rrr   UCDLA-NET     UCDLA-CATALOG-NET          [CXL]
      R 032.rrr.rrr.rrr   UCL-TAC       UCL TAC                     [PK]
      R 035.rrr.rrr.rrr   MERIT         MERIT COMPUTER NETWK       [HWB]
      R 036.rrr.rrr.rrr T SU-NET-TEMP   Stanford University Network[PA5]
      R 039.rrr.rrr.rrr T SRINET-TEMP   SRI Local Network         [GEOF]
      R 041.rrr.rrr.rrr   BBN-TEST-A    BBN-GATE-TEST-A            [RH6]
      R 044.rrr.rrr.rrr   AMPRNET       Amateur Radio Experiment Net[HM]
        001.rrr.rrr.rrr-003.rrr.rrr.rrr Unassigned                 [JBP]
        005.rrr.rrr.rrr   Unassigned    Unassigned                 [JBP]
        009.rrr.rrr.rrr   Unassigned    Unassigned                 [JBP]
        016.rrr.rrr.rrr-017.rrr.rrr.rrr Unassigned                 [JBP]
        019.rrr.rrr.rrr-020.rrr.rrr.rrr Unassigned                 [JBP]
        024.rrr.rrr.rrr   Unassigned    Unassigned                 [JBP]
        033.rrr.rrr.rrr-034.rrr.rrr.rrr Unassigned                 [JBP]
        037.rrr.rrr.rrr-038.rrr.rrr.rrr Unassigned                 [JBP]
        040.rrr.rrr.rrr   Unassigned    Unassigned                 [JBP]
        042.rrr.rrr.rrr-043.rrr.rrr.rrr Unassigned                 [JBP]
        045.rrr.rrr.rrr-126.rrr.rrr.rrr Unassigned                 [JBP]
      R 127.rrr.rrr.rrr                 Loopback                   [JBP]

Reynolds & Postel                                               [Page 7]

RFC 990                                                    November 1986
Network Numbers

   Class B Networks

      * Internet Address  Name          Network               References
      - ----------------  ----          -------               ----------
        128.000.rrr.rrr                 Reserved                   [JBP]
      R 128.001.rrr.rrr   BBN-TEST-B    BBN-GATE-TEST-B            [RH6]
      R 128.002.rrr.rrr   CMU-NET       CMU-Ethernet              [HDW2]
      R 128.003.rrr.rrr   LBL-CSAM      LBL-CSAM-RESEARCH         [JS38]
      R 128.004.rrr.rrr   DCNET         LINKABIT DCNET         [78,DLM1]
      R 128.005.rrr.rrr   FORDNET       FORD DCNET             [78,DLM1]
      R 128.006.rrr.rrr   RUTGERS       RUTGERS                   [CLH3]
      R 128.007.rrr.rrr   DFVLR         DFVLR DCNET Network        [GB7]
      R 128.008.rrr.rrr   UMDNET        Univ of Maryland DCNET [78,DLM1]
      R 128.009.rrr.rrr   ISI-NET       USC-ISI Local Network      [CMR]
      R 128.010.rrr.rrr   PURDUE-CS-EN  Purdue Computer Science    [CAK]
      R 128.011.rrr.rrr   BBN-CRONUS    BBN DOS Project         [72,WXM]
      R 128.012.rrr.rrr   SU-NET        Stanford University Net    [LB3]
      D 128.013.rrr.rrr   MATNET        Mobile Access Terminal Net [SHB]
      R 128.014.rrr.rrr   BBN-SAT-TEST  BBN SATNET Test Net        [SHB]
      R 128.015.rrr.rrr   S1NET         LLL-S1-NET                [EAK1]
      R 128.016.rrr.rrr   UCLNET        University College London   [PK]
      D 128.017.rrr.rrr   MATNET-ALT    Mobile Access Terminal Alt [SHB]
      R 128.018.rrr.rrr   SRINET        SRI Local Network         [GEOF]
      D 128.019.rrr.rrr   EDN           DCEC EDN                   [EC5]
      D 128.020.rrr.rrr   BRLNET        BRLNET                 [10,MJM2]
      R 128.021.rrr.rrr   SF-PR-1       SF-1 Packet Radio Network  [JEM]
      R 128.022.rrr.rrr   SF-PR-2       SF-2 Packet Radio Network  [JEM]
      R 128.023.rrr.rrr   BBN-PR        BBN Packet Radio Network  [JAW3]
      R 128.024.rrr.rrr   ROCKWELL-PR   Rockwell Packet Radio Net  [EHP]
      D 128.025.rrr.rrr   BRAGG-PR      Ft. Bragg Packet Radio Net [JEM]
      D 128.026.rrr.rrr   SAC-PR        SAC Packet Radio Network   [BG5]
      D 128.027.rrr.rrr   DEMO-PR-1     Demo-1 Packet Radio Network[LCS]
      D 128.028.rrr.rrr   C3-PR-TEMP    Testbed Development PR NET [BG5]
      R 128.029.rrr.rrr   MITRE         MITRE Cablenet         [121,TML]
      R 128.030.rrr.rrr   MIT-NET       MIT Local Network         [DDC1]
      R 128.031.rrr.rrr   MIT-RES       MIT Research Network      [DDC1]
      R 128.032.rrr.rrr   UCB-ETHER     UC Berkeley Ethernet      [DAM1]
      R 128.033.rrr.rrr   BBN-NET       BBN Network               [JSG5]
      R 128.034.rrr.rrr   NOSC-LCCN     NOSC / LCCN                [RH6]
      R 128.035.rrr.rrr   CISLTESTNET1  Honeywell          [60,61,JLM23]
      R 128.036.rrr.rrr   YALE-NET      YALE NET               [129,JO5]
      D 128.037.rrr.rrr   YPG-NET       Yuma Proving Grounds    [10,BWA]
      D 128.038.rrr.rrr   NSWC-NET      NSWC Local Host Net       [RLH2]
      R 128.039.rrr.rrr   NTANET        NDRE-TIU                   [PS3]
      R 128.040.rrr.rrr   UCL-NET-A     UCL                        [RC7]
      R 128.041.rrr.rrr   UCL-NET-B     UCL                        [RC7]
      R 128.042.rrr.rrr   RICE-NET      Rice University        [129,PGM]

Reynolds & Postel                                               [Page 8]

RFC 990                                                    November 1986
Network Numbers

      R 128.043.rrr.rrr   DRENET        Canada REF ARPANET     [10,JR17]
      D 128.044.rrr.rrr   WSMR-NET      White Sands Network       [CAS1]
      C 128.045.rrr.rrr   DEC-WRL-NET   DEC WRL Network       [129,RKJ2]
      R 128.046.rrr.rrr   PURDUE-NET    Purdue Campus Network      [CAK]
      D 128.047.rrr.rrr   TACTNET       Tactical Packet Net      [9,KTP]
      G 128.048.rrr.rrr   UCDLA-NET-B   UCDLA-Network-B         [10,CXL]
      R 128.049.rrr.rrr   NOSC-ETHER    NOSC Ethernet         [129,RLB3]
      G 128.050.rrr.rrr   COINS         COINS On-Line Intel Net   [RLS6]
      G 128.051.rrr.rrr   COINSTNET     COINS TEST NETWORK        [RLS6]
      R 128.052.rrr.rrr   MIT-AI-NET    MIT AI NET             [129,MDC]
      R 128.053.rrr.rrr   SAC-PR-2      SAC PRNET Number 2         [BG5]
      R 128.054.rrr.rrr   UCSD          UC San Diego Network  [129,GH29]
      R*128.055.rrr.rrr   MFENET        LLNL MFE Network       [119,DRP]
      D 128.056.rrr.rrr   USNA-NET      US Naval Academy Network   [TXS]
      D 128.057.rrr.rrr   DEMO-PR-2     Demo-2 Packet Radio Net    [LCS]
      C*128.058.rrr.rrr   SPAR          Schlumberger PA Net    [129,RXB]
      R 128.059.rrr.rrr   CU-NET        Columbia University    [129,LH2]
      D 128.060.rrr.rrr   NRL-LAN       NRL Lab Area Net           [WF3]
      R*128.061.rrr.rrr   GATECH        Georgia Tech           [129,GXS]
      R 128.062.rrr.rrr   MCC-NET       MCC Corporate Net      [129,CBD]
      R 128.063.rrr.rrr   BRL-SUBNET    BRL-SUBNET-EXP            [RBN1]
      R 128.064.rrr.rrr-128.079.rrr.rrr Net Dynamics Exp           [ZSU]
      D 128.080.rrr.rrr   CECOMNET      CECOM EPR NET             [PFS2]
      R 128.081.rrr.rrr   SYMBOLICS     SYMBOLICS              [129,CH2]
        128.082.rrr.rrr   Unassigned    Unassigned                 [JBP]
      R 128.083.rrr.rrr   UTAUSTIN      U. Texas Austin       [129,JSQ1]
      R 128.084.rrr.rrr   CORNELL-NET   Cornell Backbone Net   [129,BN9]
      C*128.085.rrr.rrr   DRILL-NET     Teleco Drilltech Net       [DBJ]
      R 128.086.rrr.rrr   MRC           UK.CO.GEC.RL.MRC          [RHC3]
      R 128.087.rrr.rrr   HIRST         UK.CO.GEC.RL.HRC          [RHC3]
      R*128.088.rrr.rrr   HP-NET        HEWLETT-PACKARD-NET        [AXG]
      R 128.089.rrr.rrr   BBN-ENET-TEMP BBN ETHER NETWORK      [129,SGC]
      C*128.090.rrr.rrr   PQS           PERQ SYSTEMS CORP      [129,DXS]
      R 128.091.rrr.rrr   UPENN         UPenn Campus Network   [129,IW5]
      R 128.092.rrr.rrr   INTELLINET    INTELLICORP NET       [129,DAVE]
      R*128.093.rrr.rrr   INRIA-ROCQU   INRIA Rocquencourt        [MXA1]
      R*128.094.rrr.rrr   SYSNET        AT&T SYSNETWORK            [EXY]
      R 128.095.rrr.rrr   WASHINGTON    Comp Sci Ether Net    [129,RA17]
      C*128.096.rrr.rrr   BELLCORE-NET  BELLCORE-NET              [PK28]
      R 128.097.rrr.rrr   UCLANET       UCLA Network              [BJL5]
      R 128.098.rrr.rrr   RSRE-EN2      RSRE-EXP-NET-2             [JXW]
      C 128.099.rrr.rrr   NORTHROP-NET  Northrop Net          [129,RSM1]
      R*128.100.rrr.rrr   TORONTO       U. of Toronto Net      [129,BXD]
      R 128.101.rrr.rrr   UMN           Univ. of Minn.             [SSB]
      G 128.102.rrr.rrr   AMES-NET      Ames Backbone Net.    [129,MSM1]
      R 128.103.rrr.rrr   HARV-FIBER    Harvard FiberOp Ether [129,SB28]
      R 128.104.rrr.rrr   WISC-HERD     Univ. of Wisconsin    [129,EJN1]

Reynolds & Postel                                               [Page 9]

RFC 990                                                    November 1986
Network Numbers

      R 128.105.rrr.rrr   WISC-CS       Univ. of Wisconsin     [129,CBP]
      D 128.106.rrr.rrr   SRI-PSON-1    ADEA/SRI Ft. Lewis        [ERK3]
      D 128.107.rrr.rrr   LEWIS-PRNET1  ADEA/SRI Ft. Lewis        [ERK3]
      D 128.108.rrr.rrr   LEWIS-PRNET2  ADEA/SRI Ft. Lewis        [ERK3]
      R 128.109.rrr.rrr   TUCC-MCNC     TUCC-MCNC NC Net           [JXR]
      R 128.110.rrr.rrr   UTAH-NET      UTAH-CAMPUS-NET           [JL15]
      R 128.111.rrr.rrr   UCSB          U of CA, Santa Barbara     [PXH]
      R 128.112.rrr.rrr   PRINCETON     Princeton University       [LXR]
      R 128.113.rrr.rrr   RPINET        RPI-LOCALNET               [MS9]
      R 128.114.rrr.rrr   UCSC          U.C. Santa Cruz Net    [129,JXH]
      R 128.115.rrr.rrr   LLL-LABNET    LLNL Open Labnet         [BANDY]
      R 128.116.rrr.rrr   USAN          UNIV SATELLITE NET     [129,BXI]
      R 128.117.rrr.rrr   UCAR          UNIV CORP ATM RSCH     [129,BXI]
      R 128.118.rrr.rrr   PENN-STATE    Penn State Network        [SXS1]
      R 128.119.rrr.rrr   UMASS-CS      UMass COINS Dept LAN   [129,GXW]
      R 128.120.rrr.rrr   UCDAVIS       U.C. Davis Network     [129,RXH]
      R 128.121.rrr.rrr   JVNC-NET      John von Neumann Ctr Net   [FXH]
      R 128.122.rrr.rrr   NYU-NET       NYU Campus Network        [BJR2]
      R*128.123.rrr.rrr   NMSU          N M State Univ        [129,MXS3]
      R 128.124.rrr.rrr T NTA-TEMP      NTARE BF-TO-PDP11         [TM10]
      R 128.125.rrr.rrr   USCNET        USC Campus Network    [129,MAB4]
      R 128.126.rrr.rrr   SDC-PRC       SDC Paoli R&D Center  [129,MXS2]
      C*128.127.rrr.rrr   FTP-SOFTWARE  FTP Software Net          [JLR4]
      R 128.128.rrr.rrr   WHOINET       WHOI Campus Net           [ARM5]
      C*128.129.rrr.rrr   CGI           Carnegie Group             [RXA]
      R*128.130.rrr.rrr   TUNET-T       TU Wien Terminal Net  [129,GXP1]
      R*128.131.rrr.rrr   TUNET-F       TU Wien File Net      [129,GXP1]
      G*128.132.rrr.rrr   RADC-LONS     RADC-LONS Net          [129,GXG]
      G*128.133.rrr.rrr   AFSC-LONS     AFSC-LONS Net          [129,GXG]
      R 128.134.rrr.rrr   SDN           System Dev Net       [21,22,HXC]
      R 128.135.rrr.rrr   U-CHICAGO     UNIVERSITYOFCHICAGO   [129,MC17]
      R 128.136.rrr.rrr   TEK-ALLNET    Teknowledge-Net        [129,TE2]
      C*128.137.rrr.rrr   GENNET1       Genentech Corp Net    [129,SXM1]
      R 128.138.rrr.rrr   COLORADO      U Colorado Boulder    [129,RXJ1]
      R 128.139.rrr.rrr   ILAN          Israel Academic Net   [129,DB35]
      R 128.140.rrr.rrr   EMORY-INET    Emory Internet        [129,SA29]
      R*128.141.rrr.rrr   CERN-ETHER    DD Main Ethernet       [129,BXS]
      R*128.142.rrr.rrr   CERN-TOKEN    DD Main IBM Token Ring [129,BXS]
      R*128.143.rrr.rrr   VIRGINIA      Univ. of Virginia     [129,JXJ1]
      R*128.144.rrr.rrr   ARC-CALGARY   Alta Research Calgary      [DXK]
      R 128.145.rrr.rrr   NYSERNET      NYSERNET                   [MXF]
      R 128.146.rrr.rrr   OHIO-STATE    Ohio State Univ           [RSD2]
      R 128.147.rrr.rrr   U-PGH-NET     Univ. Pittsburgh Net       [SM6]
      R 128.148.rrr.rrr   BROWN-UNIV    Brown University Net      [MXR1]
      G 128.149.rrr.rrr   JPL-NET       JPL Central Net           [MSM1]
      G 128.150.rrr.rrr   NSF-LAN       NSF-LAN                   [FW17]
      R 128.151.rrr.rrr   UR-NET        Univ. of Rochester        [TXM1]

Reynolds & Postel                                              [Page 10]

RFC 990                                                    November 1986
Network Numbers

      C*128.152.rrr.rrr   HAC-VLSI      Hughes Aircraft VLSI Net  [PXH1]
      R 128.153.rrr.rrr   CLARKSON      Clarkson University        [JXH]
      G 128.154.rrr.rrr   GSFC-NET      GSFC Central Net          [MSM1]
      G 128.155.rrr.rrr   LARC-NET      LARC Central Net          [MSM1]
      G 128.156.rrr.rrr   LERC-NET      LERC Central Net          [MSM1]
      G 128.157.rrr.rrr   JSC-NET       JSC Central Net           [MSM1]
      G 128.158.rrr.rrr   MSFC-NET      MSFC Central Net          [MSM1]
      G 128.159.rrr.rrr   KSC-NET       KSC Central Net           [MSM1]
      G 128.160.rrr.rrr   NSTL-NET      NSTL Central Net          [MSM1]
      G 128.161.rrr.rrr   NSN-NET       NASA Science Net          [MSM1]
      C 128.162.rrr.rrr   CRAY-NET      Cray Research              [DXB]
      R 128.163.rrr.rrr   UKY-NET       U. of Kentucky Net         [GXB]
      R 128.164.rrr.rrr   GWU-GATE      George Washington U.       [TXT]
      G 128.165.rrr.rrr   LANL-INET     LANL Inter-Network        [JC11]
      D*128.166.rrr.rrr   BAC-NET       Boeing Aerospace Corp Net [JXJ2]
      R 128.167.rrr.rrr   SURA          SURAnet                   [JXH1]
      C 128.168.rrr.rrr   GOLDHILL      Gold-Hill-Computers        [GXM]
      R 128.169.rrr.rrr   UTK           Univ Tenn-Knoxville        [JXC]
      R 128.170.rrr.rrr   SDC-CAM       SDC Camarillo R&D Net      [DSR]
        128.171.rrr.rrr-191.254.rrr.rrr Unassigned                 [JBP]
        191.255.rrr.rrr                 Reserved                   [JBP]

   Class C Networks

      * Internet Address  Name          Network               References
      - ----------------  ----          -------               ----------
        192.000.000.rrr                 Reserved                   [JBP]
      R 192.000.001.rrr   BBN-TEST-C    BBN-GATE-TEST-C            [RH6]
        192.000.002.rrr-192.000.255.rrr Unassigned                 [JBP]
      R 192.001.000.rrr-192.001.004.rrr BBN local networks         [SGC]
      R 192.001.005.rrr   BBN-ENET2     BBN-ENET2                  [SGC]
      R 192.001.006.rrr                 BBN local network          [SGC]
      R 192.001.007.rrr   BBN-ENET      BBN-ENET                   [SGC]
      R 192.001.008.rrr                 BBN local network          [SGC]
      R 192.001.009.rrr   BBN-ENET3     BBN-ENET3                  [SGC]
      R 192.001.010.rrr   BBN-NETR      BBN-NETR                   [SGC]
      R 192.001.011.rrr   BBN-SPC-ENET  BBN-SPC-ENET               [SGC]
      R 192.001.012.rrr-192.003.255.rrr BBN local networks         [SGC]
      R*192.004.000.rrr-192.004.255.rrr BELLCORE-NET          [129,PK28]
      R 192.005.001.rrr   CISLHYPERNET  Honeywell                [JLM23]
      R*192.005.002.rrr   UF-NET-A      UF-CIS Dept Ether          [AXW]
      C 192.005.003.rrr   HP-DESIGN-AIDS HP Design Aids            [AXG]
      C 192.005.004.rrr   HP-TCG-UNIX   Hewlett Packard TCG Unix   [AXG]
      R 192.005.005.rrr   DEC-MRNET     DEC Marlboro Ethernet  [129,KWP]
      R 192.005.006.rrr   DEC-MRRAD     DEC Marlboro Developmt [129,KWP]
      R 192.005.007.rrr   CIT-CS-NET    Caltech-CS-Net         [137,DSW]
        192.005.008.rrr   Unassigned    Unassigned                 [JBP]

Reynolds & Postel                                              [Page 11]

RFC 990                                                    November 1986
Network Numbers

      R 192.005.009.rrr   AERONET       Aerospace Labnet         [2,LCN]
      R 192.005.010.rrr   ECLNET        USC-ECL-CAMPUS-NET        [MAB4]
      R 192.005.011.rrr   CSS-RING      SEISMIC-RESEARCH-NET       [RR2]
      R 192.005.012.rrr   UTAH-NET-C    UTAH-COMPUTER-SCIENCE-NET [GW22]
      R 192.005.013.rrr   GSWDNET       Compion Network        [129,FAS]
      R 192.005.014.rrr   RAND-NET      RAND Network           [129,JDG]
      R 192.005.015.rrr T NYU-NET-TEMP  NYU Network                [EF5]
      R 192.005.016.rrr   LANLLAND      Los Alamos Dev LAN    [129,JC11]
      R 192.005.017.rrr   NRL-NET       Naval Research Lab          [AP]
      R 192.005.018.rrr   IPTO-NET      ARPA-IPTO Office Net       [SA2]
      R 192.005.019.rrr   UCIICS        UCI-ICS Res Net            [MTR]
      R 192.005.020.rrr   CISLTTYNET    Honeywell                [JLM23]
      D 192.005.021.rrr   BRLNET1       BRLNET1                [10,MJM2]
      D 192.005.022.rrr   BRLNET2       BRLNET2                [10,MJM2]
      D 192.005.023.rrr   BRLNET3       BRLNET3                [10,MJM2]
      D 192.005.024.rrr   BRLNET4       BRLNET4                [10,MJM2]
      D 192.005.025.rrr   BRLNET5       BRLNET5                [10,MJM2]
      D 192.005.026.rrr   NSRDCOA-NET   NSRDC Office Auto Net      [TXC]
      D 192.005.027.rrr   DTNSRDC-NET   DTNSRDC-NET                [TXC]
      R 192.005.028.rrr   RSRE-NULL     RSRE-NULL                 [RNM1]
      R 192.005.029.rrr   RSRE-ACC      RSRE-ACC                  [RNM1]
      R 192.005.030.rrr   RSRE-PR       RSRE-PR                   [RNM1]
      R*192.005.031.rrr   SIEMENS-NET   Siemens Research Network   [PXN]
      R 192.005.032.rrr   CISLTESTNET2  Honeywell          [60,61,JLM23]
      R 192.005.033.rrr   CISLTESTNET3  Honeywell          [60,61,JLM23]
      R 192.005.034.rrr   CISLTESTNET4  Honeywell          [60,61,JLM23]
      R 192.005.035.rrr   RIACS         USRA                  [129,RLB1]
      R 192.005.036.rrr   CORNELL-CS    CORNELL CS Research    [129,DK2]
      R 192.005.037.rrr   UR-CS-NET     U of R CS 3Mb Net      [129,LB1]
      R 192.005.038.rrr   SRI-C3ETHER   SRI-AITAD C3ETHERNET   [129,BG5]
      R 192.005.039.rrr   UDEL-EECIS    Udel EECIS LAN         [129,CC2]
      R 192.005.040.rrr   PUCC-NET-A    PURDUE Comp Cntr Net      [JRS8]
      D 192.005.041.rrr   WISLAN        WIS Research LAN      [129,JRM1]
      D 192.005.042.rrr   HYPER-1ISG    AFDSC Hypernet            [MCA1]
      R 192.005.043.rrr   CUCSNET       Columbia CS Net        [129,LH2]
      R 192.005.044.rrr   FARBER-PC-NET Farber PC Network          [DJF]
      R 192.005.045.rrr   AIDS-NET      AI&DS Network          [129,KFD]
      R 192.005.046.rrr   NTA-RING      NDRE-RING                  [PS3]
      R 192.005.047.rrr   NSRDC         NSRDC                      [PXM]
      R 192.005.048.rrr   PURDUE-CS-NET Purdue CS Ethernet     [129,CAK]
      R 192.005.049.rrr   UCSF          Univ of Calif, San Fran[129,TF6]
      R 192.005.050.rrr   CTH-CS-NET    Chalmers CSN Net       [129,UXB]
      R 192.005.051.rrr   THEORYNET     Cornell Theory Center [129,AB13]
      R 192.005.052.rrr   NLM-ETHER     NLM-LHNCBC-ETHERNET    [129,JA1]
      R 192.005.053.rrr   UR-CS-ETHER   U of R CS 10Mb Net     [129,LB1]
      R 192.005.054.rrr   AERO-A6       Aerospace                [2,LCN]
      R 192.005.055.rrr   UCLA-CECS     UCLA-CECS Network      [129,RBW]

Reynolds & Postel                                              [Page 12]

RFC 990                                                    November 1986
Network Numbers

      C 192.005.056.rrr   TARTAN-NET    Tartan Labs                [SXB]
      R 192.005.057.rrr   UDEL-CC       UDEL Comp Center      [129,RR18]
      R 192.005.058.rrr   CSNET-PDN     CSNET X.25 Network     [68,RDR4]
      R*192.005.059.rrr   INRIA-SM90    Inria GIP SM-90            [MXS]
      R*192.005.060.rrr   SM90-X1       Inria SM-90 exp. 1         [MXS]
      R*192.005.061.rrr   SM90-X2       Inria SM-90 exp. 2         [MXS]
      R*192.005.062.rrr   LITP-SM90     LITP SM-90                 [MXS]
        192.005.063.rrr   Unassigned    Unassigned                 [JBP]
      R 192.005.064.rrr   AMES-NAS-NET  NASA ARC NAS LAN      [129,MF31]
      R 192.005.065.rrr   NPRDC-Ether   NPRDC TRCF Ethernet        [LRB]
      R 192.005.066.rrr   HARV-NET      Harvard Comp Sci Net      [SB28]
      R 192.005.067.rrr   CECOM-ETHER   CECOM ADDCOMPE ETHER   [129,GIH]
      R 192.005.068.rrr   AERO-130      AEROSPACE-130              [LCN]
      R 192.005.069.rrr   UIUC-NET      Univ of IL at Urbana   [129,AKC]
      G 192.005.070.rrr   CELAN         COINS Exper. LAN           [MXM]
      R 192.005.071.rrr   SAC-ETHER     SAC C3 Ethernet        [129,BG5]
      R*192.005.072.rrr   U CHICAGO     U Chicago                  [TXN]
      R 192.005.073.rrr   U CHICAGO     U Chicago                  [TXN]
      R*192.005.074.rrr-192.005.087.rrr U Chicago                  [TXN]
      R 192.005.088.rrr   YALE-EE-NET   YALE-EE-NET           [129,AG22]
      R 192.005.089.rrr   HARV-APPOLLO  Harvard University      [4,SB28]
      R 192.005.090.rrr   HARV-ETHER    Harvard CS Ethernet       [SB28]
      R 192.005.091.rrr   PURDUE-ECN1   Purdue ECN          [42,63,GG11]
      R 192.005.092.rrr   BRAGG-ETHER   SRI Bragg Ether        [129,GIH]
      R 192.005.093.rrr   SRI-DEMO      SRI Ether Demo         [129,GIH]
      R*192.005.094.rrr   SDCRDCF-10MB  SDC R&D primary net   [129,DJV1]
      R*192.005.095.rrr   SDCRDCF-3MB   SDC R&D old net       [129,DJV1]
      R*192.005.096.rrr   UBC-CS-NET    UBC Comp Sci Net       [129,PXB]
      R*192.005.097.rrr   UCLA-CS-LNI   UCLA CS LNI Network        [RBW]
      R*192.005.098.rrr   UCLA-PIC      UCLA PIC Network       [129,RBW]
      R 192.005.099.rrr   SPACENET      S-1 Workstation Net.   [129,TXW]
      R*192.005.100.rrr   HCSC-NET      Honeywell CSC Net     [129,TRG4]
      R 192.005.101.rrr   PUCC-NET-B    Purdue Gateway Network    [JRS8]
      R 192.005.102.rrr   PUCC-RHF-NET  PUCC RHF Based Net        [JRS8]
      C*192.005.103.rrr   TYM-NTD-NET   Tymnet NTD Ethernet        [SMF]
      R 192.005.104.rrr   THINK-INET    Thinking Machines     [129,BJN1]
      R 192.005.105.rrr   CCA-POND      CCA Ethernet1 (POND)   [129,AL6]
      C*192.005.106.rrr   BITSTREAM     Bitstream Type Foundry [129,PXA]
      R*192.005.107.rrr   PASC-ETHER    IBM PASC Ethernet      [129,GXL]
      R*192.005.108.rrr   PASC-BB       IBM PASC Broadband      [63,GXL]
      R*192.005.109.rrr   CWR-JCC-T     ARJCC TOPS-20 NET     [129,JAG3]
      R*192.005.110.rrr   CWR-JCC-L     ARJCC LOCAL NET       [129,JAG3]
      R*192.005.111.rrr   CWR-QUAD      Campus QUAD NET       [129,JAG3]
      R*192.005.112.rrr   CWR-CAISR     CAISR LOCAL NET       [129,JAG3]
      R*192.005.113.rrr   CWR-CES       CES LOCAL NET             [JAG3]
      C*192.005.114.rrr   I2-RING-1     INTERMETRICS PRONET    [129,NXH]
      C*192.005.115.rrr   I2-ETHER-1    INTERMETRICS ETHER     [129,NXH]

Reynolds & Postel                                              [Page 13]

RFC 990                                                    November 1986
Network Numbers

      R 192.005.116.rrr   BRAGGNET-1    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.117.rrr   BRAGGNET-2    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.118.rrr   BRAGGNET-3    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.119.rrr   BRAGGNET-4    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.120.rrr   BRAGGNET-5    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.121.rrr   BRAGGNET-6    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.122.rrr   BRAGGNET-7    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.123.rrr   BRAGGNET-8    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.124.rrr   BRAGGNET-9    BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.125.rrr   BRAGGNET-10   BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.126.rrr   BRAGGNET-11   BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.127.rrr   BRAGGNET-12   BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.128.rrr   BRAGGNET-13   BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.129.rrr   BRAGGNET-14   BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.130.rrr   BRAGGNET-15   BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.131.rrr   BRAGGNET-16   BRAGG/ADDCOMPE        [129,BG25]
      R 192.005.132.rrr   BRAGGNET-17   BRAGG/ADDCOMPE        [129,BG25]
      R*192.005.133.rrr   PERCEPT-AI    Perceptronics              [KXC]
      C*192.005.134.rrr   I2-ETHER-2    Intermetrics           [129,NH2]
      R 192.005.135.rrr   LL-SPEECH-NET LL Speech Net         [129,RH60]
      R 192.005.136.rrr   LL43-LEX-BACK Lincoln G43-LEX-BACK  [129,BC65]
      R 192.005.137.rrr   LL43-LEX-SUNA Lincoln G43-LEX-SUNA  [129,BC65]
      R 192.005.138.rrr   LL43-LEX-SUNB Lincoln G43-LEX-SUNB  [129,BC65]
      R 192.005.139.rrr   LL43-LEX-APO  Lincoln G43-LEX-APO   [129,BC65]
      R 192.005.140.rrr   LL43-TB-BACK  Lincoln G43-TB-BACK   [129,BC65]
      R 192.005.141.rrr   LL43-TB-APO   Lincoln G43-TB-APO    [129,BC65]
      R*192.005.142.rrr   CCVR          CCVR Network           [129,RXD]
      R 192.005.143.rrr   NWU           NORTHWESTERN               [AXS]
      R 192.005.144.rrr   CRE-NET       CANADA-CRC-ETHERNET       [JR17]
      R 192.005.145.rrr   ECRC-SL       ECRC-SL Net                [PXD]
      R 192.005.146.rrr   CPW-PSC       Pittsburgh SC Center       [MXL]
      R 192.005.147.rrr   ALV-ETHER     MMDAALVVAX                 [LXR]
      R 192.005.148.rrr   DISE          Dist Sys Eval Envir       [RHS4]
      R 192.005.149.rrr   RDL-ETHER     RDL                   [129,MXS1]
      G*192.005.150.rrr   SP-ACE-NET    Sperry Space Sys Net   [129,JXM]
      R 192.005.151.rrr   PENN-STATE-1  Penn State Network        [SXS1]
      R 192.005.152.rrr   PENN-STATE-2  Penn State Network        [SXS1]
      R 192.005.153.rrr   PENN-STATE-3  Penn State Network        [SXS1]
      R 192.005.154.rrr   PENN-STATE-4  Penn State Network        [SXS1]
      R 192.005.155.rrr   PENN-STATE-5  Penn State Network        [SXS1]
      R 192.005.156.rrr   PENN-STATE-6  Penn State Network        [SXS1]
      R 192.005.157.rrr   PENN-STATE-7  Penn State Network        [SXS1]
      R 192.005.158.rrr   PENN-STATE-8  Penn State Network        [SXS1]
      R 192.005.159.rrr   PENN-STATE-9  Penn State Network        [SXS1]
      R 192.005.160.rrr   PENN-STATE-10 Penn State Network        [SXS1]
      R 192.005.161.rrr   PENN-STATE-11 Penn State Network        [SXS1]
      R 192.005.162.rrr   PENN-STATE-12 Penn State Network        [SXS1]

Reynolds & Postel                                              [Page 14]

RFC 990                                                    November 1986
Network Numbers

      C*192.005.163.rrr   I2-SPDNET-1   I2 SPD Ethernet        [129,NH2]
      C 192.005.164.rrr   GTEECN        GTE Eng Net            [129,JXE]
      R 192.005.165.rrr   SDC-CAM-1     SDC Camarillo R&D Net      [DSR]
      R*192.005.166.rrr   CRC-WDC-NET   CRC Washington DC         [GEOF]
      R 192.005.167.rrr   MCC-AI-NET    MCC AI Subnet          [129,CBD]
      R 192.005.168.rrr   MCC-CAD2-NET  MCC CAD2 Subnet        [129,CBD]
      R 192.005.169.rrr   MCC-PKG-NET   MCC PKG Subnet         [129,CBD]
      G 192.005.170.rrr   ANLNET1       Argonne Network       [129,LW26]
      G 192.005.171.rrr   ANLNET2       Argonne Network       [129,LW26]
      G 192.005.172.rrr   ANLNET3       Argonne Network       [129,LW26]
      G 192.005.173.rrr   ANLNET4       Argonne Network       [129,LW26]
      G 192.005.174.rrr   ANLNET5       Argonne Network       [129,LW26]
      G 192.005.175.rrr   ANLNET6       Argonne Network       [129,LW26]
      G 192.005.176.rrr   ANLNET7       Argonne Network       [129,LW26]
      G 192.005.177.rrr   ANLNET8       Argonne Network       [129,LW26]
      G 192.005.178.rrr   ANLNET9       Argonne Network       [129,LW26]
      G 192.005.179.rrr   ANLNET10      Argonne Network       [129,LW26]
      G 192.005.180.rrr   ANLNET11      Argonne Network       [129,LW26]
      G 192.005.181.rrr   ANLNET12      Argonne Network       [129,LW26]
      G 192.005.182.rrr   ANLNET13      Argonne Network       [129,LW26]
      G 192.005.183.rrr   ANLNET14      Argonne Network       [129,LW26]
      G 192.005.184.rrr   ANLNET15      Argonne Network       [129,LW26]
      G 192.005.185.rrr   ANLNET16      Argonne Network       [129,LW26]
      G 192.005.186.rrr   ANLNET17      Argonne Network       [129,LW26]
      G 192.005.187.rrr   ANLNET18      Argonne Network       [129,LW26]
      G 192.005.188.rrr   ANLNET19      Argonne Network       [129,LW26]
      G 192.005.189.rrr   ANLNET20      Argonne Network       [129,LW26]
      G 192.005.190.rrr   ANLNET21      Argonne Network       [129,LW26]
      G 192.005.191.rrr   ANLNET22      Argonne Network       [129,LW26]
      G 192.005.192.rrr   ANLNET23      Argonne Network       [129,LW26]
      G 192.005.193.rrr   ANLNET24      Argonne Network       [129,LW26]
      G 192.005.194.rrr   ANLNET25      Argonne Network       [129,LW26]
      G 192.005.195.rrr   ANLNET26      Argonne Network       [129,LW26]
      G 192.005.196.rrr   ANLNET27      Argonne Network       [129,LW26]
      G 192.005.197.rrr   ANLNET28      Argonne Network       [129,LW26]
      G 192.005.198.rrr   ANLNET29      Argonne Network       [129,LW26]
      G 192.005.199.rrr   ANLNET30      Argonne Network       [129,LW26]
      G 192.005.200.rrr   ANLNET31      Argonne Network       [129,LW26]
      G 192.005.201.rrr   ANLNET32      Argonne Network       [129,LW26]
      R 192.005.202.rrr   FMC-CEL       FMC-CEL Host Net      [129,BXL1]
      R*192.005.203.rrr   OKSTATE-CS    Okla. St. CS Network   [129,MXV]
      R 192.005.204.rrr   SKL-ENET      Canada_SKL_ethernet       [JR17]
      R*192.005.205.rrr   ARC-CALGARY   Alta Research Calgary      [DXK]
      R 192.005.206.rrr   BU-MATHNET    BU-MATHNET                [BS24]
      R 192.005.207.rrr   BU-CHEMNET    BU-CHEMNET                [BS24]
      R 192.005.208.rrr   BU-CLANNET    BU-CLANNET                [BS24]
      D 192.005.209.rrr   SSDF-CDCNET   CDC-DDN-DEVELOPMENT        [RXE]

Reynolds & Postel                                              [Page 15]

RFC 990                                                    November 1986
Network Numbers

      G 192.005.210.rrr   ECSNET        Embedded Comp Sys Net     [CAL7]
      R 192.005.211.rrr   INTEL-IWARP   Intel iWarp Net        [129,BT5]
      R 192.005.212.rrr T EMORY-INET4   Emory Internet 4          [SA29]
      R 192.005.213.rrr   HARRIS        Harris-GSSNet             [DXT1]
      C*192.005.214.rrr   DECUACNET     Decuac Network         [129,FXA]
      R 192.005.215.rrr   MASONNET      GMU Network           [129,TH15]
      R*192.005.216.rrr   NTT-NET       NTT Research Lab Net   [129,YXS]
      R 192.005.217.rrr   YALE-ZOO-NET  Yale Apollo Ed Net        [RC77]
      R 192.005.218.rrr   ARINC-GW-NET  Yale Apollo Ed Net         [YXN]
      R 192.005.219.rrr   CLEMSON       Clemson Univ Comp Center   [DXB]
      C*192.005.220.rrr   SCCNET        SPACECOM IP Network        [MXO]
      C*192.005.221.rrr   CSC-LONS      CSC-LONS Network       [129,GXG]
      C*192.005.222.rrr   CSC-OIS       CSC-OIS Network        [129,GXG]
      R*192.005.223.rrr   HWELL-RE      HWELL-RESD-ENGRG       [129,PXP]
      D*192.005.224.rrr   HAIC-NET      Hughes AI Center Net   [129,DXK]
      C*192.005.225.rrr-192.005.236.rrr GE CALMA BLOCK         [129,TXR]
      C*192.005.237.rrr   PRIME-AI      Prime AI CAD/CAM       [112,NXS]
      C*192.005.238.rrr   PALLADIAN-1   Palladian-IN1           [CSTACY]
      C*192.005.239.rrr   PALLADIAN-2   Palladian-RING          [CSTACY]
      C*192.005.240.rrr   PALLADIAN-3   Palladian-IN2           [CSTACY]
      R 192.005.241.rrr   USC-CYPRESS   USC Cypress Network     [27,DXE]
      C*192.005.242.rrr   MOT-ASIC      Motorola Chandler LAN     [GXW1]
      C*192.005.243.rrr   MOT-MESA      Motorola Mesa LAN         [GXW1]
      C*192.005.244.rrr   MOT-DOVER     Motorola Dover LAN        [GXW1]
      C*192.005.245.rrr   MOT-PRICE     Motorola Prince Road LAN  [GXW1]
      C*192.005.246.rrr   MOT-PICO      Motorola Pico LAN         [GXW1]
      C*192.005.247.rrr   MOT-52ND      Motorola Semi MIS LAN     [GXW1]
      C*192.005.248.rrr   MOT-AUSTIN    Motorola Austin LAN       [GXW1]
      C*192.005.249.rrr   MOT-OAKHILL   Motorola Oakhill LAN      [GXW1]
      C*192.005.250.rrr   MOT-TELAVIV   Motorola Tel Aviv LAN     [GXW1]
      C*192.005.251.rrr   MOT-GENEVA    Motorola Geneva LAN       [GXW1]
      C*192.005.252.rrr   MOT-TOKYO     Motorola Tokyo LAN        [GXW1]
      C*192.005.253.rrr   MOT-HONGKONG  Motorola Hongkong LAN     [GXW1]
      R*192.005.254.rrr   ANSA          ANSA Project           [129,DXO]
        192.005.255.rrr   Unassigned    Unassigned                 [JBP]
      C*192.006.000.rrr-192.006.255.rrr Hewlett Packard            [AXG]
      C*192.007.000.rrr-192.007.255.rrr Computer Consoles, Inc.   [RA11]
      C*192.008.000.rrr-192.008.255.rrr Spartacus Computers, Inc.  [SXM]
      C*192.009.000.rrr-192.009.255.rrr SUN Microsystems, Inc.     [BN4]
      C*192.010.000.rrr-192.010.040.rrr Symbolics, Inc.            [CH2]
      R 192.010.041.rrr T SCRC-ETHERNET SCRC ETHERNET          [129,CH2]
      C*192.010.042.rrr-192.010.255.rrr Symbolics, Inc.            [CH2]
      C*192.011.000.rrr-192.011.255.rrr ATT, Bell Labs            [MH12]
        192.012.000.rrr   Unassigned    Unassigned                 [JBP]
        192.012.001.rrr   Unassigned    Unassigned                 [JBP]
        192.012.002.rrr   Unassigned    Unassigned                 [JBP]
      C*192.012.003.rrr   FLAIR         Fairchild AI Lab Net  [129,AMS1]

Reynolds & Postel                                              [Page 16]

RFC 990                                                    November 1986
Network Numbers

      C*192.012.004.rrr   SCG-NET       Hughes SCG Net         [132,MXP]
      R 192.012.005.rrr   AIC-LISPMS    SRI-AIC-LispMachNet    [129,PM4]
      R 192.012.006.rrr   NPS-C2        NPS-C2                 [129,AW9]
      R 192.012.007.rrr T NYU-CS-ETHER  NYU CompSci Ethernet   [129,LOU]
      D 192.012.008.rrr   PICANET1      Picatinny Arsenal LAN1[129,RFD1]
      R 192.012.009.rrr T CADRE-NET     Decision Systems Lab       [SM6]
      R 192.012.010.rrr   CORNELL-ENG   Cornell-Engineering    [129,BN9]
      R 192.012.011.rrr   MIT-TEST      MIT Gateway TEST NET   [129,NC3]
        192.012.012.rrr   Unassigned    Unassigned                 [JBP]
      R 192.012.013.rrr   JHU-NET1      JHU-NET1              [129,MO14]
      R 192.012.014.rrr   JHU-NET2      JHU-NET2              [129,MO14]
      R 192.012.015.rrr   BROOKNET      BNL Brooknet III        [129,GC]
      R 192.012.016.rrr   PRMNET        SRI-SURAN-EN          [129,BP17]
      G 192.012.017.rrr   LLL-TIS-NET   LLL-TIS-NET        [129,132,NAL]
      R 192.012.018.rrr   CIT-CS-10NET  Caltech 10Meg EtherNet[137,AD22]
      R 192.012.019.rrr   CIT-NET       Caltech Campus Net    [137,AD22]
      R 192.012.020.rrr   CIT-SUN-NET   Caltech Sun Net       [137,AD22]
      R 192.012.021.rrr   CIT-PHYSCOMP  Caltech Phys Comp Net [137,AD22]
      R 192.012.022.rrr   UTCSRES       UTCS Net Research     [129,JSQ1]
      R 192.012.023.rrr   UTCSTTY       UTCS TTY Kludgenet    [129,JSQ1]
      R 192.012.024.rrr   MICANET       MITRE (Experimental)       [WDL]
      R 192.012.025.rrr   CSS-GRAMINAE  CSS Workstation Net     [62,RR2]
      R 192.012.026.rrr   NOSC-NETR     Net-R Testbed at BBN  [116,CP10]
      R 192.012.027.rrr   UR-LASER      UR Laser Energetics    [129,WXL]
      R*192.012.028.rrr   RIACS-X-NET   RIACS-Experimental-Net    [DG28]
      D 192.012.029.rrr   RF-EVANS      ADDCOMPE DC3 LAN1     [129,MB31]
      D 192.012.030.rrr   RF-HEX-A      ADDCOMPE DC3 LAN2     [129,MB31]
      D 192.012.031.rrr   USNA-ENET     USNA Engineering Net   [129,TXS]
      R*192.012.032.rrr   CMU-VINEYARD  CMU File Cluster Net   [129,MXK]
      R 192.012.033.rrr   SRI-CSL-NET   SRI-CSL 10MB Ethernet     [GEOF]
      C*192.012.034.rrr-192.012.043.rrr Schlumberger PA Net    [129,RXB]
      R 192.012.044.rrr T NRTC-NET      Northrop Research Net [129,RSM1]
      R 192.012.045.rrr   ACC-SB-IMP-NET ACC Santa Barbara IMP    [AB20]
      R 192.012.046.rrr   ACC-SB-ETHER  ACC Santa Barbara Ethernet[AB20]
      R 192.012.047.rrr   UMN-UCC-NET   Univ. of Minnesota        [RG12]
      G 192.012.048.rrr   AMES-ED-EXPNET Code ED Exp. Net.    [129,MSM1]
      G 192.012.049.rrr   AMES-ED-NET   Code ED IP Net        [129,MSM1]
      G 192.012.050.rrr   AMES-DB-NET   Ames DBridge Net      [129,MSM1]
      R 192.012.051.rrr   THINK-CHAOS   TMC Chaos             [129,BJN1]
      R*192.012.052.rrr   NEURO-NET     NEURO-NET              [129,JXB]
      R*192.012.053.rrr   PU-LCA        Princeton U. LCA       [129,CXH]
      R 192.012.054.rrr   AERO-A3       Aerospace                 [AWS3]
      R 192.012.055.rrr   HAZ-LPR-BETA  Hazeltine LPR Net      [129,KXK]
      R 192.012.056.rrr   UTAH-AP-NET   Utah-Appolo-Ring-Net      [JL15]
      R 192.012.057.rrr   MCC-CAD-NET   MCC CAD Subnet         [129,CBD]
      R 192.012.058.rrr   MCC-PP-NET    MCC AI Subnet          [129,CBD]
      R 192.012.059.rrr   MCC-DB-NET    MCC DB Subnet          [129,CBD]

Reynolds & Postel                                              [Page 17]

RFC 990                                                    November 1986
Network Numbers

      R 192.012.060.rrr   MCC-HI-NET    MCC HI Subnet          [129,CBD]
      R 192.012.061.rrr   MCC-SW-NET    MCC SW Subnet          [129,CBD]
      R 192.012.062.rrr   DREA-ENET     DREA Lispm & Vaxen    [129,GLH5]
      R 192.012.063.rrr   CYPRESS       CYPRESS Serial Net         [CAK]
      D 192.012.064.rrr   LOGNET        Logistics Net GW       [10,JR15]
      D 192.012.065.rrr   HELNET1       HELNET1               [129,MJM2]
      D 192.012.066.rrr   HELNET2       HELNET2               [129,MJM2]
      D 192.012.067.rrr   HELNET3       HELNET3                   [MJM2]
      G 192.012.068.rrr   ORNL-MSRNET   ORNL Local Area Net      [10,HD]
      R 192.012.069.rrr   UA-CS-NET     UNIV. OF ARIZ-CS DEPT [129,BM40]
      R 192.012.070.rrr   NPRDC-IPD     NPRDC-IPD REMOTE ETHERNET  [LRB]
      R 192.012.071.rrr   NPRDC-ISG     NPRDC-ISG REMOTE ETHERNET  [LRB]
      R 192.012.072.rrr   ULCC          UK.AC.ULCC                [RHC3]
      R 192.012.073.rrr   BTRL          UK.CO.BT-RESEARCH-LABS    [RHC3]
      R*192.012.074.rrr   APPLE-ETHER   APPLE COMPUTER ETHER   [129,RXJ]
      R*192.012.075.rrr   PASC-RING     IBM PASC TOKEN RING        [GXL]
      R*192.012.076.rrr   UQ-NET        UNIV. OF QLD NETWORK   [129,AXH]
      C*192.012.077.rrr   PRIME         PRIME COMPUTER, INC.       [FXS]
      C*192.012.078.rrr   GENNET        GENENTECH NET          [129,SXM]
      C*192.012.079.rrr   SLI           SOFTWARE LEVERAGE INC.     [MXG]
      R 192.012.080.rrr   CAEN          UMICH-CAEN                 [HWB]
      R 192.012.081.rrr   YALE-RING-NET YALE RESEARCH RING        [RC77]
      C 192.012.082.rrr   CU-CC-NET     Columbia CC Net       [129,BC14]
      G 192.012.083.rrr   UCDLA-EXNET   UCDLA EXPERIMENTAL NET     [CXL]
      G 192.012.084.rrr   UCDLA-PCNET   UCDLA PERSONAL NET         [CXL]
      G 192.012.085.rrr   UCDLA-OPNET   UCDLA OPTICAL DISK         [CXL]
      G 192.012.086.rrr   UCDLA-RADNET  UCDLA PACKET RADIO         [CXL]
      G 192.012.087.rrr   UCDLA-CSLNET  UCDLA STATE LIBRARY        [CXL]
      R*192.012.088.rrr   RUTGERS-NWK   RUTGERS, NEWARK            [DXB]
      R 192.012.089.rrr   SBCS-CSDEPT-1 SB Computer Science        [JXS]
      R 192.012.090.rrr   SBCS-CSDEPT-2 SB Computer Science        [JXS]
      R 192.012.091.rrr   RPICSNET0     RPICS-LOCALNET-0           [MS9]
      R 192.012.092.rrr   RPICSNET1     RPICS-LOCALNET-1           [MS9]
      R 192.012.093.rrr   RPICSNET2     RPICS-LOCALNET-2           [MS9]
      R 192.012.094.rrr   RPICSNET3     RPICS-LOCALNET-3           [MS9]
      R 192.012.095.rrr   RPICSNET4     RPICS-LOCALNET-4           [MS9]
      R 192.012.096.rrr   RPICSNET5     RPICS-LOCALNET-5           [MS9]
      R 192.012.097.rrr   RPICSNET6     RPICS-LOCALNET-6           [MS9]
      R 192.012.098.rrr   RPICSNET7     RPICS-LOCALNET-7           [MS9]
      R 192.012.099.rrr   RPICSNET8     RPICS-LOCALNET-8           [MS9]
      R 192.012.100.rrr   RPICSNET9     RPICS-LOCALNET-9           [MS9]
      R*192.012.101.rrr   OSU-CGRG      OSU Computer Graphics  [129,KXS]
      G 192.012.102.rrr   AMES-NAS-HY   AMES NAS HY NET           [MF31]
      R 192.012.103.rrr   CSU-USCETHER  Colorado State Univ Nets  [RXB1]
      R 192.012.104.rrr   CSUNRELETHER  Colorado State Univ Nets  [RXB1]
      R 192.012.105.rrr   CSU-ASYNC     Colorado State Univ Nets  [RXB1]
      R 192.012.106.rrr   CSU-LANCE     Colorado State Univ Nets  [RXB1]

Reynolds & Postel                                              [Page 18]

RFC 990                                                    November 1986
Network Numbers

      R 192.012.107.rrr   CSU-ATMOS     Colorado State Univ Nets  [RXB1]
      R 192.012.108.rrr   CSU-UCC-ETHER Colorado State Univ Nets  [RXB1]
      R*192.012.109 rrr-192.012.118.rrr Colorado State Univ Nets  [RXB1]
      G 192.012.119.rrr   ICST          ICST Network          [129,JCN2]
      D 192.012.120.rrr   MITRE-B-NET   MITRE BEDFORD ETHER        [BSW]
      R*192.012.121.rrr   FSUCS         FSU COMPUTER SCIENCE 1     [TXB]
      R*192.012.122.rrr   FSUCS2        FSU COMPUTER SCIENCE 2     [TXB]
      G 192.012.123.rrr   AMES-CCF-NET  AMES CCF NETWORK      [129,MSM1]
      D 192.012.124.rrr   ETL-LAN       ETL LOCAL AREA NET     [129,WWS]
      D 192.012.125.rrr   CRDC-NET1     CRDC-NET1              [129,JXY]
      D 192.012.126.rrr   CRDC-NET2     CRDC-NET2              [129,JXY]
      R 192.012.127.rrr   LL-MI-NET     LL-Machine Intell.     [129,GAA]
      R 192.012.128.rrr   AITAC-ADMIN   SRI-AITAC ADMIN NET    [129,DVC]
      C*192.012.129.rrr   SYM-CAN       Symbolics/Canada           [MXH]
      R 192.012.130.rrr   SDC-SM        SDC Santa Monica           [CAS]
      R 192.012.131.rrr   SAC-ADMIN     SRI-SAC ADMIN NET     [129,KMC3]
      R 192.012.132.rrr   LLL-MON       LLL Open Labnet-1    [129,BANDY]
      R 192.012.133.rrr   LLL-TUE       LLL Open Labnet-2    [129,BANDY]
      R 192.012.134.rrr   LLL-WED       LLL Open Labnet-3    [129,BANDY]
      R 192.012.135.rrr   LLL-THU       LLL Open Labnet-4    [129,BANDY]
      R 192.012.136.rrr   LLL-FRI       LLL Open Labnet-5    [129,BANDY]
      R 192.012.137.rrr   LLL-SAT       LLL Open Labnet-6    [129,BANDY]
      R 192.012.138.rrr   LLL-SUN       LLL Open Labnet-7    [129,BANDY]
      D 192.012.139.rrr   JTELS-BEN-GW  JUMPS Teleprocessing      [RR26]
      R*192.012.140.rrr   INFERENCE     INFERENCE                  [DXT]
      R 192.012.141.rrr   CSS-ETHER     CSS Workstation Net 2     [RA11]
      C*192.012.142.rrr   SENTRY        Sentry Adv. Prod. Net      [LXL]
      C*192.012.143.rrr   VHSIC-NET     Sentry VHSIC Test          [LXL]
      R 192.012.144.rrr   ECRCNET       ECRC Internet          [129,PXD]
      C*192.012.145 rrr-192.012.154.rrr RCA-CADNET             [129,RXG]
      C*192.012.155 rrr-192.012.170.rrr MTCS-CUST                  [SXF]
      D 192.012.171.rrr   PICANET2      Picatinny Arsenal 2       [RFD1]
      R 192.012.172.rrr   ROCKWELLENET  ROCKWELL ETHERNET           [NG]
      R 192.012.173.rrr   AERO-D8       Aerospace                 [AWS3]
      R*192.012.174 rrr-192.012.183.rrr TORONTO                [129,BXD]
      R 192.012.184.rrr   DSPO-NET      BRL Hyper Proj Net         [BT5]
      R 192.012.185.rrr   BU-NET        BU COMPUTING              [BS24]
      R 192.012.186.rrr   BU-ACCNET     BU ACADEMIC               [BS24]
      R 192.012.187.rrr   BU-BROADB     BU BROADBAND              [BS24]
      R 192.012.188.rrr   BU-SCINET     BU SCIENCE                [BS24]
      R 192.012.189.rrr   BU-ENGNET     BU ENGINEERING            [BS24]
      R 192.012.190.rrr   BU-DSGNET     BU DIST SYS               [BS24]
      R 192.012.191.rrr   BU-MEDNET     BU MED SCHOOL             [BS24]
      R 192.012.192.rrr   CNUCE-LAN1    CNR Pisa Ethernet         [ABB2]
      R 192.012.193.rrr   CNUCE-LAN2    CNR Pisa Ethernet         [ABB2]
      R 192.012.194.rrr   CNUCE-LAN3    CNR Pisa Ethernet         [ABB2]
      R 192.012.195.rrr   SDC-PRC       SDC Paoli R&D Center      [MXS2]

Reynolds & Postel                                              [Page 19]

RFC 990                                                    November 1986
Network Numbers

      D 192.012.196.rrr   JHUAPL-NET    JHU APL Net           [129,SAK3]
      D 192.012.197.rrr   ACATT-ETHER1  ADEA/CECOM Adv Tech   [129,ERK3]
      D 192.012.198.rrr   ACATT-ETHER2  ADEA/CECOM Adv Tech   [129,ERK3]
      D 192.012.199.rrr   LEWIS-ETHER1  ADEA/SRI Ft. Lewis    [129,ERK3]
      D 192.012.200.rrr   SRI-PSON-10   ADEA/SRI Ft. Lewis    [129,ERK3]
      D 192.012.201.rrr   SRI-PSON-11   ADEA/SRI Ft. Lewis    [129,ERK3]
      D 192.012.202.rrr   SRI-PSON-12   ADEA/SRI Ft. Lewis    [129,ERK3]
      D 192.012.203.rrr   SRI-PSON-13   ADEA/SRI Ft. Lewis    [129,ERK3]
      D 192.012.204.rrr   SRI-PSON-14   ADEA/SRI Ft. Lewis    [129,ERK3]
      R 192.012.205.rrr   OHIO-STATE1   Ohio State Univ.          [RSD2]
      R 192.012.206.rrr   INDIANA       Indiana-Bloomington       [BXS1]
      R 192.012.207.rrr   SUPERCOMP     SDSC-Supercomputer         [SIP]
      R 192.012.208.rrr   TEK-NET       Teknowledge-Net            [TE2]
      R 192.012.209.rrr   NSF           NSF Internal Net           [FXW]
      R*192.012.210.rrr   NORTHEASTERN  Northeastern Univ.         [CXJ]
      R 192.012.211.rrr   JVNC          NSF/JVNC Net               [HXH]
      R 192.012.212.rrr   RAND-NET2     RAND-NET2                  [JDG]
      R 192.012.213.rrr   RAND-NET3     RAND-NET3                  [JDG]
      R*192.012.214.rrr   BUFFALO-CS    SUNY/Buffalo-CS-Ether [129,JRL8]
      R 192.012.215.rrr   XDRENET       DRE X.25 COMPONENT        [JR17]
      R 192.012.216.rrr   STEVENS-TECH  Stevens Inst of Tech   [129,RXM]
      R 192.012.217.rrr T EMORY-INET1   Emory Internet        [129,SA29]
      R 192.012.218.rrr T EMORY-INET2   Emory Internet        [129,SA29]
      R 192.012.219.rrr T EMORY-INET3   Emory Internet        [129,SA29]
      R 192.012.220 rrr-192.012.234.rrr UWISC-IPNET           [129,EJN1]
      R*192.012.235.rrr   IDA-NET       Comp Sc Linkoping S       [MXA2]
      R 192.012.236.rrr   CITNET        CIT Campus Net         [129,CXB]
      R*192.012.237.rrr   HCSC-APOLLO   Honeywell CSC Apollo    [4,TRG4]
      R*192.012.238.rrr   CU-BOULDER    CU Boulder Campus      [129,DXW]
      R*192.012.239.rrr   CU-ACS        CU ACS Net             [129,DXW]
      R*192.012.240.rrr   CU-ENGINEER   CU Engineering Net     [129,DXW]
      R*192.012.241.rrr   CU-SUNNET     CU Sun Net             [129,DXW]
      R*192.012.242.rrr   CU-CER        CU CER Net             [129,DXW]
      R*192.012.243.rrr   CU-OT         CU Office Tower        [129,DXW]
      R*192.012.244.rrr   CU-ENTERPRISE CU ECE Sun Net         [129,DXW]
      R*192.012.245.rrr   CU-LASP       CU LASP Net            [129,DXW]
      R*192.012.246.rrr   CU-JILA       CU JILA Net            [129,DXW]
      R*192.012.247.rrr   CU-PHYSICS    CU Physics Net         [129,DXW]
      R*192.012.248.rrr   CU-PSYCHOLOGY CU Psychology Net      [129,DXW]
      R*192.012.249.rrr   CU-MCDB       CU MCDB Net            [129,DXW]
      R*192.012.250.rrr   CU-AI         CU AI Consortium       [129,DXW]
      R*192.012.251.rrr   CU-CHEMISTRY  CU Chemistry Net       [129,DXW]
      R 192.012.252.rrr   LL-VENET1     Linclon Labs Venet1   [129,BC65]
      R 192.012.253.rrr   LL-VENET2     Linclon Labs Venet2   [129,BC65]
      R 192.012.254.rrr   LL-APOLLO     Linclon Labs Apollo   [129,BC65]
      R 192.012.255.rrr   LL-ENET       Linclon Labs Enet     [129,BC65]
      D 192.013.000.rrr-192.014.255.rrr DODIIS Subnetworks         [AY5]

Reynolds & Postel                                              [Page 20]

RFC 990                                                    November 1986
Network Numbers

      C*192.015.000.rrr-192.015.255.rrr NBINET                     [WW2]
      G 192.016.000.rrr-192.016.049.rrr LANLLAN               [129,JC11]
      R 192.016.050.rrr-192.016.071.rrr RPI-LOCALNETS          [129,MS9]
      R 192.016.072.rrr   UTCHPC        U.T. System CHPC      [129,WCB3]
      R 192.016.073.rrr   UTDALLAS      U.T. Dallas           [129,WCB3]
      R 192.016.074.rrr   UTABRC        U.T. Austin BRC       [129,WCB3]
      C*192.016.075.rrr-192.016.122.rrr CSC-BLOCK              [129,GXG]
      R*192.016.123.rrr-192.016.154.rrr Swedish Network            [BXE]
      R*192.016.155.rrr-192.016.166.rrr CERN-Block                 [BXS]
      R 192.016.167.rrr   YALE-HP-NET   YALE-HP-NET               [RC77]
      D 192.016.168.rrr   PICANET3      Picatinny 3               [RFD1]
      D 192.016.169.rrr   NRL-HUBNET    Experimental Hubnet        [MPM]
      C 192.016.170.rrr   TWG-DEMO-NET  TWG Net for Demos         [JXS1]
      R 192.016.171.rrr   MACOM         M/A-COM Net                [JXA]
        192.016.172.rrr-192.016.255.rrr Unassigned                 [JBP]
      R*192.017.000.rrr-192.017.255.rrr NIBELUNG                   [MXA]
      C*192.018.000.rrr-192.018.255.rrr SUN Microsystems, Inc.     [BN4]
      C*192.019.000.rrr-192.019.255.rrr SYSNET-2                   [EXY]
      C*192.020.000.rrr-192.020.255.rrr ATT-MD-NET            [129,MH12]
      C*192.021.000.rrr-192.021.255.rrr FORMATIVE                  [SXB]
      C*192.022.000.rrr-192.022.255.rrr APPLICON                  [AXS1]
      C*192.023.000.rrr-192.023.255.rrr FACTNET                    [JXB]
      C*192.024.000.rrr-192.024.255.rrr CHROMATICS                [RXB2]
      R*192.025.000.rrr-192.024.255.rrr Hewlett Packard            [SXI]
      D*192.026.000.rrr   ACSAD         ACSAD Network              [SXH]
      R 192.026.001.rrr   MCC-DB1-NET   MCC DB1 Network            [CBD]
      R 192.026.002.rrr   MCC-DB2-NET   MCC DB2 Network            [CBD]
      R 192.026.003.rrr   MCC-DB3-NET   MCC DB3 Network            [CBD]
      R 192.026.004.rrr   MCC-DB4-NET   MCC DB4 Network            [CBD]
      R 192.026.005.rrr   MCC-DB5-NET   MCC DB5 Network            [CBD]
      R 192.026.006.rrr   MCC-DB6-NET   MCC DB6 Network            [CBD]
      R 192.026.007.rrr   SPAWAR        SPARWAR Systems Command    [JK7]
        192.026.008.rrr   Unassigned    Unassigned                 [JBP]
      R*192.026.009.rrr   ICOT          ICOT Local Network         [SXT]
      R 192.026.010.rrr   GALLAUDET     GALLAUDET UNIVERSITY       [KXC]
      D 192.026.011.rrr   NRL-HUBNET1   Experimental Hubnet 1      [MPM]
      D 192.026.012.rrr   NRL-HUBNET2   Experimental Hubnet 2      [MPM]
      D 192.026.013.rrr   NRL-HUBNET3   Experimental Hubnet 3      [MPM]
      D 192.026.014.rrr   NRL-HUBNET4   Experimental Hubnet 4      [MPM]
      D 192.026.015.rrr   NRL-HUBNET5   Experimental Hubnet 5      [MPM]
      D 192.026.016.rrr   NRL-HUBNET6   Experimental Hubnet 6      [MPM]
      D 192.026.017.rrr   NRL-HUBNET7   Experimental Hubnet 7      [MPM]
      D 192.026.018.rrr   NRL-HUBNET8   Experimental Hubnet 8      [MPM]
      D 192.026.019.rrr   NRL-HUBNET9   Experimental Hubnet 9      [MPM]
      R*192.026.020.rrr   NJIT-NET      NJIT-SUPERCOMPUTER         [BXC]
      R 192.026.021.rrr   SDC-PRC-SW    SDC/PAOLI SOFT TECH       [MXS2]
      R 192.026.022.rrr   SDC-PRC-LBS   SDC/PAOLI ARTIF INT       [MXS2]

Reynolds & Postel                                              [Page 21]

RFC 990                                                    November 1986
Network Numbers

      R 192.026.023.rrr   SDC-PRC-SA    SDC/PAOLI SYS ARCH        [MXS2]
      R 192.026.024.rrr   SDC-PRC-CR    SDC/PAOLI COMP RES        [MXS2]
      R 192.026.025.rrr   LUCID         Lucid Network              [BXM]
        192.026.026.rrr-192.026.255.rrr Unassigned                 [JBP]
      C*192.027.000.rrr-192.027.255.rrr Hughes Aircraft VLSI      [PXH1]
        192.028.000.rrr-223.255.254.rrr Unassigned                 [JBP]
        223.255.255.rrr                 Reserved                   [JBP]

   Other Reserved Internet Addresses

      * Internet Address  Name          Network               References
      - ----------------  ----          -------               ---------- Multicast               [44,JBP] Reserved                   [JBP]

Reynolds & Postel                                              [Page 22]

RFC 990                                                    November 1986
Network Numbers

   Network Totals

      Assigned for the ARPA-Internet and the DDN-Internet

         Class         A         B         C     Total

         Research     13        92       775       880

         Defense       9        19        45        73

         Government    1        15        97       113

         Commercial    3         4         5        12

         Total        26       130       922      1078

      Allocated for Internet and Independent Uses

         Class         A         B         C     Total

         Research     14       105      1681      1800

         Defense       9        20        47        76

         Government    1        17        98       116

         Commercial    3        12      3974      3989

         Total        27       154      5800      5981

      Maximum Allowed

         Class         A         B         C     Total

         Research      8      1024     65536     66568

         Defense      24      3072    458752    461848

         Government   24      3072    458752    461848

         Commercial   74      9214   1114137   1123394

         Total       126     16382   2097150   2113658

Reynolds & Postel                                              [Page 23]

RFC 990                                                    November 1986
Version Numbers

                        ASSIGNED VERSION NUMBERS

   In the Internet Protocol (IP) [46,101] there is a field to identify
   the version of the internetwork general protocol.  This field is 4
   bits in size.

   Assigned Internet Version Numbers

      Decimal   Keyword    Version                            References
      -------   -------    -------                            ----------
          0                Reserved                                [JBP]
        1-3                Unassigned                              [JBP]
          4       IP       Internet Protocol                   [101,JBP]
          5       ST       ST Datagram Mode                     [51,JWF]
       6-14                Unassigned                              [JBP]
         15                Reserved                                [JBP]

Reynolds & Postel                                              [Page 24]

RFC 990                                                    November 1986
Protocol Numbers

                       ASSIGNED PROTOCOL NUMBERS

   In the Internet Protocol (IP) [46,101] there is a field, called
   Protocol, to identify the the next level protocol.  This is an 8 bit

   Assigned Internet Protocol Numbers

      Decimal    Keyword     Protocol                         References
      -------    -------     --------                         ----------
           0                 Reserved                              [JBP]
           1     ICMP        Internet Control Message           [92,JBP]
           2     IGMP        Internet Group Management          [44,JBP]
           3     GGP         Gateway-to-Gateway                  [59,MB]
           4                 Unassigned                            [JBP]
           5     ST          Stream                             [51,JWF]
           6     TCP         Transmission Control              [102,JBP]
           7     UCL         UCL                                    [PK]
           8     EGP         Exterior Gateway Protocol        [118,DLM1]
           9     IGP         any private interior gateway          [JBP]
          10     BBN-RCC-MON BBN RCC Monitoring                    [SGC]
          11     NVP-II      Network Voice Protocol             [25,SC3]
          12     PUP         PUP                                [15,HGM]
          13     ARGUS       ARGUS                                [RWS4]
          14     EMCON       EMCON                                 [BN7]
          15     XNET        Cross Net Debugger                [57,JFH2]
          16     CHAOS       Chaos                                 [NC3]
          17     UDP         User Datagram                     [100,JBP]
          18     MUX         Multiplexing                       [26,JBP]
          19     DCN-MEAS    DCN Measurement Subsystems           [DLM1]
          20     HMP         Host Monitoring                    [58,RH6]
          21     PRM         Packet Radio Measurement              [ZSU]
          22     XNS-IDP     XEROX NS IDP                      [139,HGM]
          23     TRUNK-1     Trunk-1                               [SA2]
          24     TRUNK-2     Trunk-2                               [SA2]
          25     LEAF-1      Leaf-1                                [SA2]
          26     LEAF-2      Leaf-2                                [SA2]
          27     RDP         Reliable Data Protocol            [135,RH6]
          28     IRTP        Internet Reliable Transaction      [76,TXM]
          29     ISO-TP4     ISO Transport Protocol Class 4     [64,RC7]
          30     NETBLT      Bulk Data Transfer Protocol       [24,DDC1]
       31-60                 Unassigned                            [JBP]
          61                 any host internal protocol            [JBP]
          62     CFTP        CFTP                              [52,HCF2]
          63                 any local network                     [JBP]
          64     SAT-EXPAK   SATNET and Backroom EXPAK             [SHB]
          65     MIT-SUBNET  MIT Subnet Support                    [NC3]

Reynolds & Postel                                              [Page 25]

RFC 990                                                    November 1986
Protocol Numbers

          66     RVD         MIT Remote Virtual Disk Protocol      [MBG]
          67     IPPC        Internet Pluribus Packet Core         [SHB]
          68                 any distributed file system           [JBP]
          69     SAT-MON     SATNET Monitoring                     [SHB]
          70                 Unassigned                            [JBP]
          71     IPCV        Internet Packet Core Utility          [SHB]
       72-75                 Unassigned                            [JBP]
          76     BR-SAT-MON  Backroom SATNET Monitoring            [SHB]
          77                 Unassigned                            [JBP]
          78     WB-MON      WIDEBAND Monitoring                   [SHB]
          79     WB-EXPAK    WIDEBAND EXPAK                        [SHB]
      80-254                 Unassigned                            [JBP]
         255                 Reserved                              [JBP]

Reynolds & Postel                                              [Page 26]

RFC 990                                                    November 1986
Port Numbers

                         ASSIGNED PORT NUMBERS

   Ports are used in the TCP [46,102] to name the ends of logical
   connections which carry long term conversations.  For the purpose of
   providing services to unknown callers, a service contact port is
   defined.  This list specifies the port used by the server process as
   its contact port.  The contact port is sometimes called the
   "well-known port".

   To the extent possible, these same port assignments are used with the
   UDP [46,100].

   To the extent possible, these same port assignments are used with the
   ISO-TP4 [64].

   The assigned ports use a small portion of the possible port numbers.
   The assigned ports have all except the low order eight bits cleared
   to zero.  The low order eight bits are specified here.

   Port Assignments:

      Decimal   Keyword   Description                         References
      -------   -------   -----------                         ----------
      0                   Reserved                                 [JBP]
      1-4                 Unassigned                               [JBP]
      5        RJE        Remote Job Entry                      [17,JBP]
      7        ECHO       Echo                                  [90,JBP]
      9        DISCARD    Discard                               [88,JBP]
      11       USERS      Active Users                          [84,JBP]
      13       DAYTIME    Daytime                               [87,JBP]
      15       NETSTAT    Who is up or NETSTAT                     [JBP]
      17       QUOTE      Quote of the Day                      [95,JBP]
      19       CHARGEN    Character Generator                   [86,JBP]
      20       FTP-DATA   File Transfer [Default Data]          [91,JBP]
      21       FTP        File Transfer [Control]               [91,JBP]
      23       TELNET     Telnet                               [108,JBP]
      25       SMTP       Simple Mail Transfer                  [97,JBP]
      27       NSW-FE     NSW User System FE                    [29,RHT]
      29       MSG-ICP    MSG ICP                               [82,RHT]
      31       MSG-AUTH   MSG Authentication                    [82,RHT]
      33       DSP        Display Support Protocol                 [MLC]
      35                  any private printer server               [JBP]
      37       TIME       Time                                 [104,JBP]
      39       RLP        Resource Location Protocol              [1,MA]
      41       GRAPHICS   Graphics                             [125,JBP]
      42       NAMESERVER Host Name Server                      [94,JBP]
      43       NICNAME    Who Is                               [56,JAKE]

Reynolds & Postel                                              [Page 27]

RFC 990                                                    November 1986
Port Numbers

      44       MPM-FLAGS  MPM FLAGS Protocol                       [JBP]
      45       MPM        Message Processing Module [recv]      [93,JBP]
      46       MPM-SND    MPM [default send]                    [93,JBP]
      47       NI-FTP     NI FTP                                [132,SK]
      49       LOGIN      Login Host Protocol                     [PHD1]
      51       LA-MAINT   IMP Logical Address Maintenance       [75,AGM]
      53       DOMAIN     Domain Name Server                 [79,80,PM1]
      55       ISI-GL     ISI Graphics Language                 [14,RB6]
      57                  any private terminal access              [JBP]
      59                  any private file service                 [JBP]
      61       NI-MAIL    NI MAIL                                [12,SK]
      63       VIA-FTP    VIA Systems - FTP                        [DXD]
      65       TACACS-DS  TACACS-Database Service               [11,RHT]
      67       BOOTPS     Bootstrap Protocol Server            [41,WJC2]
      68       BOOTPC     Bootstrap Protocol Client            [41,WJC2]
      69       TFTP       Trivial File Transfer               [122,DDC1]
      71       NETRJS-1   Remote Job Service                    [16,RTB]
      72       NETRJS-2   Remote Job Service                    [16,RTB]
      73       NETRJS-3   Remote Job Service                    [16,RTB]
      74       NETRJS-4   Remote Job Service                    [16,RTB]
      75                  any private dial out service             [JBP]
      77                  any private RJE service                  [JBP]
      79       FINGER     Finger                                [54,KLH]
      81       HOSTS2-NS  HOSTS2 Name Server                      [EAK1]
      83       MIT-ML-DEV MIT ML Device                            [DPR]
      85       MIT-ML-DEV MIT ML Device                            [DPR]
      87                  any private terminal link                [JBP]
      89       SU-MIT-TG  SU/MIT Telnet Gateway                    [MRC]
      91       MIT-DOV    MIT Dover Spooler                        [EBM]
      93       DCP        Device Control Protocol                 [DT15]
      95       SUPDUP     SUPDUP                                [32,MRC]
      97       SWIFT-RVF  Swift Remote Vitural File Protocol       [MXR]
      98       TACNEWS    TAC News                                [FRAN]
      99       METAGRAM   Metagram Relay                          [GEOF]
      101      HOSTNAME   NIC Host Name Server                 [55,JAKE]
      102      ISO-TSAP   ISO-TSAP                              [20,MTR]
      103      X400       X400                                    [HCF2]
      104      X400-SND   X400-SND                                [HCF2]
      105      CSNET-NS   Mailbox Name Nameserver             [123,MHS1]
      107      RTELNET    Remote Telnet Service                 [96,JBP]
      109      POP-2      Post Office Protocol - Version 2     [19,JKR1]
      111      SUNRPC     SUN Remote Procedure Call                [DXG]
      113      AUTH       Authentication Service              [126,MCSJ]
      115      SFTP       Simple File Transfer Protocol        [71,MKL1]
      117      UUCP-PATH  UUCP Path Service                     [45,MAE]
      119      NNTP       Network News Transfer Protocol        [66,PL4]
      121      ERPC       HYDRA Expedited Remote Procedure Call[128,JXO]

Reynolds & Postel                                              [Page 28]

RFC 990                                                    November 1986
Port Numbers

      123      NTP        Network Time Protocol                [78,DLM1]
      125      LOCUS-MAP  Locus PC-Interface Net Map Server    [134,BXG]
      127      LOCUS-CON  Locus PC-Interface Conn Server       [134,BXG]
      129      PWDGEN     Password Generator Protocol          [136,FJW]
      130      CISCO-FNA  CISCO FNATIVE                            [WXB]
      131      CISCO-TNA  CISCO TNATIVE                            [WXB]
      132      CISCO-SYS  CISCO SYSMAINT                           [WXB]
      133-159             Unassigned                               [JBP]
      160-223             Reserved                                 [JBP]
      224-241             Unassigned                               [JBP]
      243      SUR-MEAS   Survey Measurement                     [13,AV]
      245      LINK       LINK                                 [18,RDB2]
      247-255             Unassigned                               [JBP]

Reynolds & Postel                                              [Page 29]

RFC 990                                                    November 1986
Autonomous System Numbers


   The Exterior Gateway Protocol (EGP) [115,118] specifies that groups
   of gateways may form autonomous systems.  The EGP provides a 16-bit
   field for identifying such systems.  The values of this field are
   registered here.

   Autonomous System Numbers:

      Decimal   Name                                          References
      -------   ----                                          ----------
            0   Reserved                                           [JBP]
            1   The BBN Core Gateways                               [MB]
            2   DCN-AS                                            [DLM1]
            3   The MIT Gateways                                   [LM8]
            4   ISI-AS                                            [JKR1]
            5   Symbolics                                          [CH2]
            6   HIS-Multics                                      [JLM23]
            7   UK-MOD                                            [RNM1]
            8   RICE-AS                                            [PGM]
            9   CMU-ROUTER                                          [MA]
            10  CSNET-PDN-AS                                      [RDR4]
            11  HARVARD                                           [SB28]
            12  NYU-DOMAIN                                         [EF5]
            13  BRL-AS                                            [RBN1]
            14  COLUMBIA-GW                                       [BC14]
            15  NET DYNAMICS EXP                                   [ZSU]
            16  LBL                                                 [WG]
            17  PURDUE-CS                                         [KCS1]
            18  UTEXAS                                            [JSQ1]
            19  CSS-DOMAIN                                         [RR2]
            20  UR                                                [LB16]
            21  RAND                                               [JDG]
            22  NOSC                                              [RLB3]
            23  RIACS-AS                                          [DG28]
            24  AMES-NAS-GW                                       [MF31]
            25  UCB                                               [MK17]
            26  CORNELL                                            [BN9]
            27  UMDNET                                            [JWO1]
            28  DFVLR-SYS                                          [GB7]
            29  YALE-AS                                           [JG46]
            30  SRI-AICNET                                         [PM4]
            31  CIT-CS                                            [AD22]
            32  STANFORD                                           [PA5]
            33  DEC-WRL-AS                                        [RKJ2]
            34  UDEL-EECIS                                         [NMM]
            35  MICATON                                            [WDL]

Reynolds & Postel                                              [Page 30]

RFC 990                                                    November 1986
Autonomous System Numbers

            36  EGP-TESTOR                                        [BP17]
            37  NSWC                                              [MXP1]
            38  UIUC                                               [AKC]
            39  NRL-ITD                                             [AP]
            40  MIT-TEST                                           [NC3]
            41  AMES                                              [MSM1]
            42  THINK-AS                                          [BJN1]
            43  BNL-AS                                              [GC]
            44  S1-DOMAIN                                          [LWR]
            45  LLL-TIS-AS                                         [NAL]
            46  RUTGERS                                            [RM8]
            47  USC-OBERON                                        [DRS4]
            48  NRL-AS                                             [WF3]
            49  ICST-AS                                           [JCN2]
            50  ORNL-MSRNET                                        [THD]
            51  USAREUR-EM-AS                                      [WXD]
            52  UCLA                                               [BXL]
            53  NORTHROP-AS                                       [RSM1]
            54  COA-FIN-NET                                       [RR26]
            55  UPENN-CIS                                          [IW5]
            56  OPTIMIS-P                                          [JXL]
            57  UMN-REI-UC                                         [HWB]
            58  DREA-AS                                           [GLH5]
            59  WISC-MADISON-AS                                   [EJN1]
            60  DARPA-BFLY                                          [MB]
            61  DEC-MARLBORO-AS                                    [WM3]
            62  TEKVAXC                                            [TE2]
            63  LL-MI                                              [RTL]
            64  MITRE-B-AS                                         [BSW]
            65  LOGNET-AS                                         [JR15]
            66  ETL-AI                                            [MMM3]
            67  SDC-PRC-AS                                        [MXS2]
            68  LANL-INET-AS                                      [JC11]
            69  WHARTON-AS                                         [HK2]
            70  NLM-GW                                             [JA1]
            71  SU-TEST                                            [KSL]
            72  SPAR-AS                                            [RXB]
            73  WASHINGTON-AS                                     [RA17]
            74  XDRENET-AS                                        [JR17]
            75  ANL-AS                                            [LW26]
            76  SDC-CAM-AS                                         [DSR]
            77  JHUAPL-AS                                         [SAK3]
            78  SSDF-CDC-GW                                       [RE22]
            79  DSPO-HC-AS                                         [BT5]
            80  GE-CRD                                           [JC106]
            81  TUCC-MCNC                                          [JXR]
            82  TWG-DEMO-AS                                       [JXS1]

Reynolds & Postel                                              [Page 31]

RFC 990                                                    November 1986
Autonomous System Numbers

            83  PICANET-AS                                        [RFD1]
            84  DTNSRDC-AS1                                       [RWT2]
            85  AERO-NET                                           [LCN]
            86  SURANET-AS                                        [JXH1]
      87-65534  Unassigned                                         [JBP]
        65535   Reserved                                           [JBP]

Reynolds & Postel                                              [Page 32]

RFC 990                                                    November 1986
Domain System Parameters

                        DOMAIN SYSTEM PARAMETERS

   The Internet Domain Naming System (DOMAIN) includes several
   parameters.  These are documented in RFC 883 [80].  The CLASS
   parameter is listed here.  The per CLASS parameters are defined in
   separate RFCs as indicated.

   Domain System Parameters:

      Decimal   Name                                          References
      -------   ----                                          ----------
            0   Reserved                                           [PM1]
            1   Internet                                        [80,PM1]
            2   Unassigned                                         [PM1]
            3   Chaos                                              [PM1]
      4-65534   Unassigned                                         [PM1]
        65535   Reserved                                           [PM1]

Reynolds & Postel                                              [Page 33]

RFC 990                                                    November 1986
ARPANET Logical Addresses


   The ARPANET facility for "logical addressing" is described in
   RFC 878 [74].  A portion of the possible logical addresses are
   reserved for standard uses.

   There are 49,152 possible logical host addresses.  Of these, 256 are
   reserved for assignment to well-known functions.  Assignments for
   well-known functions are made by Joyce Reynolds.  Assignments for
   other logical host addresses are made by the NIC.

   Logical Address Assignments:

      Decimal    Description                                  References
      -------    -----------                                  ----------
      0          Reserved                                          [JBP]
      1          The BBN Core Gateways                              [MB]
      2-254      Unassigned                                        [JBP]
      255        Reserved                                          [JBP]

Reynolds & Postel                                              [Page 34]

RFC 990                                                    November 1986
ARPANET Link Numbers


   The word "link" here refers to a field in the original ARPANET
   Host/IMP interface leader.  The link was originally defined as an
   8-bit field.  Later specifications defined this field as the
   "message-id" with a length of 12 bits.  The name link now refers to
   the high order 8 bits of this 12-bit message-id field.  The Host/IMP
   interface is defined in BBN Report 1822 [10].

   The low-order 4 bits of the message-id field are called the sub-link.
   Unless explicitly specified otherwise for a particular protocol,
   there is no sender to receiver significance to the sub-link.  The
   sender may use the sub-link in any way he chooses (it is returned in
   the RFNM by the destination IMP), the receiver should ignore the

   Link Assignments:

      Decimal   Description                                   References
      -------   -----------                                   ----------
      0         Reserved                                           [JBP]
      1-149     Unassigned                                         [JBP]
      150       Xerox NS IDP                                   [139,HGM]
      151       Unassigned                                         [JBP]
      152       PARC Universal Protocol                         [15,HGM]
      153       TIP Status Reporting                               [JGH]
      154       TIP Accounting                                     [JGH]
      155       Internet Protocol [regular]                    [101,JBP]
      156-158   Internet Protocol [experimental]               [101,JBP]
      159       Figleaf Link                                      [JBW1]
      160-194   Unassigned                                         [JBP]
      195       ISO-IP                                          [65,RXM]
      196-247   Experimental Protocols                             [JBP]
      248-255   Network Maintenance                                [JGH]

Reynolds & Postel                                              [Page 35]

RFC 990                                                    November 1986
IEEE 802 Numbers

                      IEEE 802 NUMBERS OF INTEREST

   Some of the networks of all classes are IEEE 802 Networks.  These
   systems may use a Link Service Access Point (LSAP) field in much the
   same way the ARPANET uses the "link" field, further, there is a
   extension of the LSAP header called the Sub-Network Access Protocol

   The IEEE likes to describe numbers in binary in bit transmission
   order, which is the opposite of the big-endian order used throughout
   the Internet protocol documentation.


      Link Service Access Point      Description              References
      --------------------------     -----------              ----------
      IEEE     Internet
      binary   binary    decimal
      00000000 00000000        0     Null LSAP                    [IEEE]
      11000000 00000011        3     Group LLC Sublayer Mgt       [IEEE]
      01000000 00000010        4     Indiv LLC Sublayer Mgt       [IEEE]
      01100000 00000110        6     DOD IP                    [101,JBP]
      01110000 00001110       14     PROWAY-LAN                   [IEEE]
      01110010 01001110       78     EIA-RS 511                   [IEEE]
      01110001 10001110      142     PROWAY-LAN                   [IEEE]
      01010101 10101010      170     SNAP                         [IEEE]
      01111111 11111110      254     ISO DIS 8473               [65,JXJ]
      11111111 11111111      255     Global DSAP                  [IEEE]

   These numbers (and others) are assigned by the IEEE Standards Office.
   The address is: IEEE Standards Office, 345 East 47th Street, New
   York, N.Y. 10017, Attn: Vince Condello.  Phone: (212) 705-7092.

   At an ad hoc special session on "IEEE 802 Networks and ARP" held
   during the TCP Vendors Workshop (August 1986), an approach to a
   consistent way to sent DOD-IP datagrams and other IP related
   protocols on 802 networks was developed.

   Due to some evolution of the IEEE 802.2 standards and the need to
   provide for a standard way to do additional DOD-IP related protocols
   (such as Address Resolution Protocol (ARP)) on IEEE 802 networks, the
   following new policy is established, which will replace the old
   policy (see RFC-960 and RFC-948 [138]).

   The new policy is for DDN and ARPA-Internet community to use IEEE
   802.2 encapsulation on 802.3, 802.4, and 802.5 networks by using the

Reynolds & Postel                                              [Page 36]

RFC 990                                                    November 1986
IEEE 802 Numbers

   SNAP with an organization code indicating that the following 16 bits
   specify the Ethertype code (where IP = 2048 (0800 hex), see Ethernet
   Numbers of Interest).


       MAC Header|      Length     |                     802.{3/4/5} MAC

      | Dsap=K1| Ssap=K1| control|                             802.2 SAP

      |protocol id or org code =K2|    Ether Type   |         802.2 SNAP

   The values of K1 and K2 must be assigned by the IEEE.  There is
   already assigned a value of K1 that indicates that the 5-octet SNAP
   header follows.  There may be a value of K2 that is already assigned
   that indicates that the last two octets of the SNAP header holds the

   The total length of the SAP Header and the SNAP header is 8-octets,
   making the 802.2 protocol overhead come out on a nice octet boundary.

   K1 is 170.  The IEEE like to talk about things in bit transmission
   order and specifies this value as 01010101.  In big-endian order, as
   used in Internet specifications, this becomes 10101010 binary, or
   AA hex, or 170 decimal.

   We believe that K2 is 0 (zero).  This must be further investigated.
   As an interim measure use K2 = 0.

   The use of the IP LSAP (K1 = 6) is to be phased out as quickly as

Reynolds & Postel                                              [Page 37]

RFC 990                                                    November 1986
Ethernet Numbers

                      ETHERNET NUMBERS OF INTEREST

   Many of the networks of all classes are Ethernets (10Mb) or
   Experimental Ethernets (3Mb).  These systems use a message "type"
   field in much the same way the ARPANET uses the "link" field.

   If you need an Ethernet type number, contact the XEROX Corporation,
   2300 Geng Road, Palo Alto, California 94303, ATTN: Ms. Pam Cance


      Ethernet          Exp. Ethernet    Description          References
      -------------     -------------   -----------           ----------
      decimal  Hex      decimal  octal
         512   0200        512   1000   XEROX PUP               [15,HGM]
         513   0201        -      -     PUP Addr. Trans.           [HGM]
        1536   0600       1536   3000   XEROX NS IDP           [139,HGM]
        2048   0800        513   1001   DOD IP                 [101,JBP]
        2049   0801        -      -     X.75 Internet              [HGM]
        2050   0802        -      -     NBS Internet               [HGM]
        2051   0803        -      -     ECMA Internet              [HGM]
        2052   0804        -      -     Chaosnet                   [HGM]
        2053   0805        -      -     X.25 Level 3               [HGM]
        2054   0806        -      -     ARP                     [83,JBP]
        2055   0807        -      -     XNS Compatability          [HGM]
        2076   081C        -      -     Symbolics Private         [DCP1]
       32771   8003        -      -     Cronus VLN            [127,DT15]
       32772   8004        -      -     Cronus Direct         [127,DT15]
       32774   8006        -      -     Nestar                     [HGM]
       32784   8010        -      -     Excelan                    [HGM]
       32821   8035        -      -     Reverse ARP             [50,JCM]
       36864   9000        -      -     Loopback                   [HGM]

   The standard for transmission of IP datagrams over Ethernets and
   Experimental Ethernets is specified in RFC 894 [99] and RFC 895 [85]

   NOTE:  Ethernet 48-bit address blocks are now assigned by the IEEE
   Standards Office (see section "IEEE 802 Numbers of Interest").

Reynolds & Postel                                              [Page 38]

RFC 990                                                    November 1986
Address Resolution Protocol


   The Address Resolution Protocol (ARP) specified in RFC 826 [83] has
   several parameters.  The assigned values for these parameters are
   listed here.


      Operation Code (op)

         1   REQUEST
         2   REPLY

      Hardware Type (hrd)

         Type   Description                                   References
         ----   -----------                                   ----------
           1    Ethernet (10Mb)                                    [JBP]
           2    Experimental Ethernet (3Mb)                        [JBP]
           3    Amateur Radio AX.25                                [PXK]
           4    Proteon ProNET Token Ring                          [JBP]
           5    Chaos                                              [GXP]
           6    IEEE 802 Networks                                  [JBP]

      Protocol Type (pro)

         Use the same codes as listed in the section "Ethernet Numbers
         of Interest" (all hardware types use this code set for the
         protocol type).

Reynolds & Postel                                              [Page 39]

RFC 990                                                    November 1986
Public Data Network Numbers


   One of the Internet Class A Networks is the international system of
   Public Data Networks.  This section lists the mapping between the
   Internet Addresses and the Public Data Network Addresses (X.121).

   The numbers below are assigned for networks that are connected to the
   ARPA-Internet and DDN-Internet, and for independent networks.  These
   independent networks are marked with an asterisk preceding the


      * Internet           Public Data Net    Description     References
      - --------------    -----------------   -----------     ----------                       Reserved             [JBP]   3110-317-00035 00   PURDUE-TN            [CAK]   3110-608-00027 00   UWISC-TN             [CAK]   3110-302-00024 00   UDEL-TN              [CAK]   2342-192-00149 23   UCL-VTEST             [PK]   2342-192-00300 23   UCL-TG                [PK]   2342-192-00300 25   UK-SATNET             [PK]   3110-608-00024 00   UWISC-IBM           [MHS1]   3110-213-00045 00   RAND-TN              [MO2]   2342-192-00300 23   UCL-CS                [PK]   3110-617-00025 00   BBN-VAN-GW          [JD21]
      *   2405-015-50300 00   CHALMERS             [UXB]   3110-713-00165 00   RICE                [PAM6]   3110-415-00261 00   DECWRL              [PAM6]   3110-408-00051 00   IBM-SJ               [SA1]   2041-117-01000 00   SHAPE                [JFW]   2628-153-90075 00   DFVLR4-X25           [GB7]   3110-213-00032 00   ISI-VAN-GW          [JD21]   2624-522-80900 52   DFVLR5-X25           [GB7]   2041-170-10000 00   SHAPE-X25            [JFW]   5052-737-20000 50   UQNET                [AXH]   3020-801-00057 50   DMC-CRC1            [JR17]   2624-522-80902 77   DFVLRVAX-X25         [GB7]
      *   2624-589-00908 01   ECRC-X25             [PXD]       Unassigned           [JBP]                       Reserved             [JBP]

   The standard for transmission of IP datagrams over the Public Data
   Network is specified in RFC 877 [68].

Reynolds & Postel                                              [Page 40]

RFC 990                                                    November 1986
Telnet Options

                        ASSIGNED TELNET OPTIONS

   The Telnet Protocol has a number of options that may be negotiated.
   These options are listed here.  "Official ARPA-Internet
   Protocols" [114] provides more detailed information.

   Options  Name                                              References
   -------  -----------------------                           ----------
      0     Binary Transmission                                [106,JBP]
      1     Echo                                               [107,JBP]
      2     Reconnection                                         [7,JBP]
      3     Suppress Go Ahead                                  [110,JBP]
      4     Approx Message Size Negotiation                    [130,JBP]
      5     Status                                             [109,JBP]
      6     Timing Mark                                        [111,JBP]
      7     Remote Controlled Trans and Echo                   [103,JBP]
      8     Output Line Width                                    [5,JBP]
      9     Output Page Size                                     [6,JBP]
     10     Output Carriage-Return Disposition                  [33,JBP]
     11     Output Horizontal Tab Stops                         [37,JBP]
     12     Output Horizontal Tab Disposition                   [36,JBP]
     13     Output Formfeed Disposition                         [34,JBP]
     14     Output Vertical Tabstops                            [39,JBP]
     15     Output Vertical Tab Disposition                     [38,JBP]
     16     Output Linefeed Disposition                         [35,JBP]
     17     Extended ASCII                                     [133,JBP]
     18     Logout                                              [30,MRC]
     19     Byte Macro                                          [40,JBP]
     20     Data Entry Terminal                                 [43,JBP]
     22     SUPDUP                                           [31,32,MRC]
     22     SUPDUP Output                                       [53,MRC]
     23     Send Location                                      [67,EAK1]
     24     Terminal Type                                     [124,MHS1]
     25     End of Record                                       [98,JBP]
     26     TACACS User Identification                           [3,BA4]
     27     Output Marking                                     [120,SXS]
     28     Terminal Location Number                            [81,RN6]
    255     Extended-Options-List                              [105,JBP]

Reynolds & Postel                                              [Page 41]

RFC 990                                                    November 1986
Machine Names

                         OFFICIAL MACHINE NAMES

   These are the Official Machine Names as they appear in the NIC Host
   Table.  Their use is described in RFC 952 [49].

   An Official Machine Name or CPU Type may be up to 40 characters taken
   from the set of uppercase letters, digits, and the two punctuation
   characters hyphen and slash.  It must start with a letter, and end
   with a letter or digit.


Reynolds & Postel                                              [Page 42]

RFC 990                                                    November 1986
Machine Names


Reynolds & Postel                                              [Page 43]

RFC 990                                                    November 1986
Machine Names


Reynolds & Postel                                              [Page 44]

RFC 990                                                    November 1986
Machine Names


Reynolds & Postel                                              [Page 45]

RFC 990                                                    November 1986
System Names

                         OFFICIAL SYSTEM NAMES

   These are the Official System Names as they appear in the NIC Host
   Table.  Their use is described in RFC 952 [49].

   An Official System Names or Operating System Type may be up to 40
   characters taken from the set of uppercase letters, digits, and the
   two punctuation characters hyphen and slash.  It must start with a
   letter, and end with a letter or digit.


Reynolds & Postel                                              [Page 46]

RFC 990                                                    November 1986
System Names


Reynolds & Postel                                              [Page 47]

RFC 990                                                    November 1986
Protocol Names


   These are the Official Protocol Names.  Their use is described in
   greater detail in RFC 952 [49].

   An Official Protocol Name or Service Type may be up to 20 characters
   taken from the set of uppercase letters, digits, and the punctuation
   character hyphen.  It must start with a letter, and end with a letter
   or digit.

   ARGUS               - ARGUS Protocol
   AUTH                - Authentication Service
   BBN-RCC-MON         - BBN RCC Monitoring
   BOOTPC              - Bootstrap Protocol Client
   BOOTPS              - Bootstrap Protocol Server
   BR-SAT-MON          - Backroom SATNET Monitoring
   CFTP                - CFTP
   CHAOS               - CHAOS Protocol
   CHARGEN             - Character Generator Protocol
   CLOCK               - DCNET Time Server Protocol
   CSNET-NS            - CSNET Mailbox Nameserver Protocol
   DAYTIME             - Daytime Protocol
   DCN-MEAS            - DCN Measurement Subsystems Protocol
   DCP                 - Device Control Protocol
   DISCARD             - Discard Protocol
   DOMAIN              - Domain Name Server
   ECHO                - Echo Protocol
   EGP                 - Exterior Gateway Protocol
   EMCON               - Emission Control Protocol
   FINGER              - Finger Protocol
   FTP                 - File Transfer Protocol
   FTP-DATA            - File Transfer Protocol Data
   GGP                 - Gateway Gateway Protocol
   GRAPHICS            - Graphics Protocol
   HMP                 - Host Monitoring Protocol
   HOST2-NS            - Host2 Name Server
   HOSTNAME            - Hostname Protocol
   ICMP                - Internet Control Message Protocol
   IGMP                - Internet Group Multicast Protocol
   IGP                 - Interior Gateway Protocol
   IP                  - Internet Protocol
   IPCU                - Internet Packet Core Utility
   IPPC                - Internet Pluribus Packet Core
   IRTP                - Internet Reliable Transaction Protocol

Reynolds & Postel                                              [Page 48]

RFC 990                                                    November 1986
Protocol Names

   ISI-GL              - ISI Graphics Language Protocol
   ISO-TP4             - ISO Transport Protocol Class 4
   ISO-TSAP            - ISO TSAP
   LA-MAINT            - IMP Logical Address Maintenance
   LEAF-1              - Leaf-1 Protocol
   LEAF-2              - Leaf-2 Protocol
   LINK                - Link Protocol
   LOGIN               - Login Host Protocol
   METAGRAM            - Metagram Relay
   MIT-ML-DEV          - MIT ML Device
   MIT-SUBNET          - MIT Subnet Support
   MIT-DOV             - MIT Dover Spooler
   MPM                 - Internet Message Protocol (Multimedia Mail)
   MPM-FLAGS           - MPM Flags Protocol
   MPM-SND             - MPM Send Protocol
   MSG-AUTH            - MSG Authentication Protocol
   MSG-ICP             - MSG ICP Protocol
   MUX                 - Multiplexing Protocol
   NAMESERVER          - Host Name Server
   NETBLT              - Bulk Data Transfer Protocol
   NETED               - Network Standard Text Editor
   NETRJS              - Remote Job Service
   NI-FTP              - NI File Transfer Protocol
   NI-MAIL             - NI Mail Protocol
   NICNAME             - Who Is Protocol
   NNTP                - Network News Transfer Protocol
   NSW-FE              - NSW User System Front End
   NTP                 - Network Time Protocol
   NVP-II              - Network Voice Protocol
   POP2                - Post Office Protocol - Version 2
   PRM                 - Packet Radio Measurement
   PUP                 - PUP Protocol
   PWDGEN              - Password Generator Protocol
   QUOTE               - Quote of the Day Protocol
   RDP                 - Reliable Data Protocol
   RJE                 - Remote Job Entry
   RLP                 - Resource Location Protocol
   RTELNET             - Remote Telnet Service
   RVD                 - Remote Virtual Disk Protocol
   SAT-EXPAK           - Satnet and Backroom EXPAK
   SAT-MON             - SATNET Monitoring
   SFTP                - Simple File Transfer Protocol
   SMTP                - Simple Mail Transfer Protocol
   ST                  - Stream Protocol
   SU-MIT-TG           - SU/MIT Telnet Gateway Protocol
   SUNRPC              - SUN Remote Procedure Call
   SUPDUP              - SUPDUP Protocol

Reynolds & Postel                                              [Page 49]

RFC 990                                                    November 1986
Protocol Names

   SUR-MEAS            - Survey Measurement
   SWIFT-RVF           - Remote Virtual File Protocol
   TACACS-DS           - TACACS-Database Service
   TACNEWS             - TAC News
   TCP                 - Transmission Control Protocol
   TELNET              - Telnet Protocol
   TFTP                - Trivial File Transfer Protocol
   TIME                - Time Server Protocol
   TRUNK-1             - Trunk-1 Protocol
   TRUNK-2             - Trunk-2 Protocol
   UCL                 - University College London Protocol
   UDP                 - User Datagram Protocol
   USERS               - Active Users Protocol
   UUCP-PATH           - UUCP Path Service
   VIA-FTP             - VIA Systems-File Transfer Protocol
   WB-EXPAK            - Wideband EXPAK
   WB-MON              - Wideband Monitoring
   XNET                - Cross Net Debugger
   XNS-IDP             - Xerox NS IDP

Reynolds & Postel                                              [Page 50]

RFC 990                                                    November 1986
Terminal Type Names

                      OFFICIAL TERMINAL TYPE NAMES

   These are the Official Terminal Type Names.  Their use is described
   in RFC 930 [124].

   An Official Terminal Type Names may be up to 40 characters taken from
   the set of uppercase letters, digits, and the two punctuation
   characters hyphen and slash.  It must start with a letter, and end
   with a letter or digit.


Reynolds & Postel                                              [Page 51]

RFC 990                                                    November 1986
Terminal Type Names


Reynolds & Postel                                              [Page 52]

RFC 990                                                    November 1986
Terminal Type Names


Reynolds & Postel                                              [Page 53]

RFC 990                                                    November 1986
Terminal Type Names


Reynolds & Postel                                              [Page 54]

RFC 990                                                    November 1986


   [1]    Accetta, M., "Resource Location Protocol", RFC 887,
          Carnegie-Mellon University, December 1983.

   [2]    Aerospace, Internal Report, ATM-83(3920-01)-3, 1982.

   [3]    Anderson, B., "TACACS User Identification Telnet Option",
          RFC 927, BBN, December 1984.

   [4]    Apollo Computer, Inc., "Domain TCP/IP Reference", Order No.
          003247, Chelmsford, Ma.

   [5]    "Telnet Output Line Width Option", NIC 20196, in: DDN Protocol
          Handbook, NIC 50005, December 1985.

   [6]    "Telnet Output Page Size Option", NIC 20197, in: DDN Protocol
          Handbook, NIC 50005, December 1985.

   [7]    "Telnet Reconnection Option", NIC 15391, in: DDN Protocol
          Handbook, NIC 50005, December 1985.

   [8]    Aupperle, E. M., "Merit's Evolution - Statistically Speaking",
          IEEE Transaction on Computers, Vol. C-32, No. 10,
          October 1983, pp. 881-902.

   [9]    BBN Proposal No. P83-COM-40, "Packet Switched Overlay to
          Tactical Multichannel/Satellite Systems".

   [10]   BBN, "Specifications for the Interconnection of a Host and an
          IMP", Report 1822, Bolt Beranek and Newman, Cambridge,
          Massachusetts, revised, December 1981.

   [11]   BBN, "User Manual for TAC User Database Tool", Bolt Beranek
          and Newman, September 1984.

   [12]   Bennett, C., "A Simple NIFTP-Based Mail System", IEN 169,
          University College, London, January 1981.

   [13]   Bhushan, A., "A Report on the Survey Project", RFC 530,
          NIC 17375, June 1973.

   [14]   Bisbey, R., D. Hollingworth, and B. Britt, "Graphics Language
          (version 2.1)", ISI/TM-80-18, Information Sciences Institute,
          July 1980.

Reynolds & Postel                                              [Page 55]

RFC 990                                                    November 1986

   [15]   Boggs, D., J. Shoch, E. Taft, and R. Metcalfe, "PUP: An
          Internetwork Architecture", XEROX Palo Alto Research Center,
          CSL-79-10, July 1979; also in IEEE Transactions on
          Communication, Volume COM-28, Number 4, April 1980.

   [16]   Braden, R., "NETRJS Protocol", RFC 740, NIC 42423,
          November 1977.

   [17]   Bressler, B., "Remote Job Entry Protocol",  RFC 407,
          NIC 12112, October 1972.

   [18]   Bressler, R., "Inter-Entity Communication -- An Experiment",
          RFC 441, NIC 13773, January 1973.

   [19]   Butler, M., J. Postel, D. Chase, J. Goldberger, and
          J. K. Reynolds, "Post Office Protocol - Version 2", RFC 937,
          Information Sciences Institute, February 1985.

   [20]   Cass, D. E., and M. T. Rose, "ISO Transport Services on Top of
          the TCP", RFC 983, NTRC, April 1986.

   [21]   Chon, K., et al., "SDN: A Computer Network for Korean Research
          Community", Proc. of the Pacific Computer Communications
          Symposium, October 1985, pp. 567-570, Seoul, Korea.

   [22]   Chon, K., et al., "System Development Network", Proc. of
          TENCON, April 1984, pp. 133-135, Singapore.

   [23]   Clark, D., "Revision of DSP Specification", Local Network
          Note 9, Laboratory for Computer Science, MIT, June 1977.

   [24]   Clark, D., M. Lambert, and L. Zhang, "NETBLT: A Bulk Data
          Transfer Protocol", RFC 969, MIT Laboratory for Computer
          Science, December 1985.

   [25]   Cohen, D., "Specifications for the Network Voice Protocol",
          RFC 741, ISI/RR 7539, Information Sciences Institute,
          March 1976.

   [26]   Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90,
          Information Sciences Institute, May 1979.

   [27]   Comer, D., and T. Narten, "The Cypress Multifunction Packet
          Switch", Technical Report CSD-TR-575, Computer Science Dept.,
          Purdue University, West LaFayette, IN.

Reynolds & Postel                                              [Page 56]

RFC 990                                                    November 1986

   [28]   Communications Interface Solutions Company, "CISCO Project
          Summary", CISCO, Document: PS70-86-021.3C, Gaithersburg, MD.

   [29]   COMPASS, "Semi-Annual Technical Report", CADD-7603-0411,
          Massachusetts Computer Associates, 4 March 1976. Also as,
          "National Software Works, Status Report No. 1,"
          RADC-TR-76-276, Volume 1, September 1976. And COMPASS. "Second
          Semi-Annual Report," CADD-7608-1611, Massachusetts Computer
          Associates, August 1976.

   [30]   Crispin, M., "Telnet Logout Option", Stanford University-AI,
          RFC 727, April 1977.

   [31]   Crispin, M., "Telnet SUPDUP Option", Stanford University-AI,
          RFC 736, October 1977.

   [32]   Crispin, M., "SUPDUP Protocol", RFC 734, NIC 41953,
          October 1977.

   [33]   Crocker, D., "Telnet Output Carriage-Return Disposition
          Option", RFC 652, October 1974.

   [34]   Crocker, D., "Telnet Output Formfeed Disposition Option",
          RFC 655, October 1974.

   [35]   Crocker, D., "Telnet Output Linefeed Disposition", RFC 658,
          October 1974.

   [36]   Crocker, D., "Telnet Output Horizontal Tab Disposition
          Option", RFC 654, October 1974.

   [37]   Crocker, D., "Telnet Output Horizontal Tabstops Option",
          RFC 653, October 1974.

   [38]   Crocker, D., "Telnet Output Vertical Tab Disposition Option",
          RFC 657, October 1974.

   [39]   Crocker, D., "Telnet Output Vertical Tabstops Option",
          RFC 656, October 1974.

   [40]   Crocker, D. H. and R. H. Gumpertz, "Revised Telnet Byte Marco
          Option", RFC 735, November 1977.

   [41]   Croft, B., and J. Gilmore, "BOOTSTRAP Protocol (BOOTP)",
          RFC 951, Stanford and SUN Microsytems, September 1985.

Reynolds & Postel                                              [Page 57]

RFC 990                                                    November 1986

   [42]   Croft, W. J., "Unix Networking at Purdue", USENIX Conference,

   [43]   Day, J., "Telnet Data Entry Terminal Option", RFC 732,
          September 1977.

   [44]   Deering, S. E., "Host Extensions for IP Multicasting",
          RFC 988, Stanford University, December 1985.

   [45]   Elvy, M., and R. Nedved, "Network Mail Path Service", RFC 915,
          Harvard and CMU, July 1986.

   [46]   Feinler, E., editor, "DDN Protocol Handbook", Network
          Information Center, SRI International, December 1985.

   [47]   Feinler, E., editor, "Internet Protocol Transition Workbook",
          Network Information Center, SRI International, March 1982.

   [48]   Feinler, E. and J. Postel, eds., "ARPANET Protocol Handbook",
          NIC 7104, for the Defense Communications Agency by SRI
          International, Menlo Park, California, Revised January 1978.

   [49]   Harrenstien, K., M. Stahl, E. Feinler, "DoD Internet Host
          Table Specification", RFC 952, SRI International,
          October 1985.

   [50]   Finlayson, R., T. Mann, J. Mogul, and M. Theimer, "A Reverse
          Address Resolution Protocol", RFC 903, Stanford University,
          June 1984.

   [51]   Forgie, J., "ST - A Proposed Internet Stream Protocol",
          IEN 119, MIT Lincoln Laboratory, September 1979.

   [52]   Forsdick, H., "CFTP", Network Message, Bolt Beranek and
          Newman, January 1982.

   [53]   Greenberg, B., "Telnet SUPDUP-OUTPUT Option", RFC 749,
          MIT-Multics, September 1978.

   [54]   Harrenstien, K., "Name/Finger", RFC 742, NIC 42758,
          SRI International,  December 1977.

   [55]   Harrenstien, K., V. White, and E. Feinler, "Hostnames Server",
          RFC 811, SRI International, March 1982.

   [56]   Harrenstien, K., and V. White, "Nicname/Whois", RFC 812,
          SRI International, March 1982.

Reynolds & Postel                                              [Page 58]

RFC 990                                                    November 1986

   [57]   Haverty, J., "XNET Formats for Internet Protocol Version 4",
          IEN 158, October 1980.

   [58]   Hinden, R. M., "A Host Monitoring Protocol", RFC 869,
          Bolt Beranek and Newman, December 1983.

   [59]   Hinden, R., and A. Sheltzer, "The DARPA Internet Gateway",
          RFC 823, September 1982.

   [60]   Honeywell CISL, Internal Document, "AFSDSC Hyperchannel RPQ
          Project Plan".

   [61]   Honeywell CISL, Internal Document, "Multics MR11 PFS".

   [62]   Hwang, K., W. J. Croft and G. H. Goble, "A Unix-Based Local
          Computer Network with Load Balancing", IEEE Computer,
          April 1982.

   [63]   IBM Corporation, "Technical Reference Manual for the IBM PC
          Network", 6322505, IBM, Boca Raton, Florida, 1984.

   [64]   International Standards Organization, "ISO Transport Protocol
          Specification - ISO DP 8073", RFC 905, April 1984.

   [65]   International Standards Organization, "Protocol for Providing
          the Connectionless-Mode Network Services", RFC 926, ISO,
          December 1984.

   [66]   Kantor, Brian, and Phil Lapsley, "Network News Transfer
          Protocol", RFC 977, UC San Diego & UC Berkeley, February 1986.

   [67]   Killian, E., "Telnet Send-Location Option", RFC 779,
          April 1981.

   [68]   Korb, J. T., "A Standard for the Transmission of IP Datagrams
          Over Public Data Networks", RFC 877, Purdue University,
          September 1983.

   [69]   Leach, P., et al., "The Architecture of an Integrated Local
          Network", Apollo Computer, Inc., Chelmsford, MA.

   [70]   Leffler, S. J., et al., "4.2bsd Network Implementation Notes",
          University of California, Berkeley, July 1983.

   [71]   Lottor, M. K., "Simple File Transfer Protocol", RFC 913, MIT,
          September 1984.

Reynolds & Postel                                              [Page 59]

RFC 990                                                    November 1986

   [72]   Macgregor, W., and D. Tappan, "The CRONUS Virtual Local
          Network", RFC 824, Bolt Beranek and Newman, August 1982.

   [73]   Malis, A.,  "The ARPANET 1822L Host Access Protocol", RFC 878,
          BBN-CC, Cambridge, December 1983.

   [74]   Malis, A., "Logical Addressing Implementation Specification",
          BBN Report 5256, pp 31-36, May 1983.

   [75]   Metcalfe, R. M. and D. R. Boggs, "Ethernet: Distributed Packet
          Switching for Local Computer Networks", Communications of the
          ACM, 19 (7), pp 395-402, July 1976.

   [76]   Miller, T., "Internet Reliable Transaction Protocol", RFC 938,
          ACC, February 1985.

   [77]   Mills, D., "DCN Local Network Protocols", RFC 891, Linkabit,
          December 1983.

   [78]   Mills, D., "Network Time Protocol", RFC 958, M/A-COM Linkabit,
          September 1985.

   [79]   Mockapetris, P., "Domain Names - Concepts and Facilities",
          RFC 882, ISI, November 1983.

   [80]   Mockapetris, P., "Domain Names - Implementation and
          Specification", RFC 883, ISI, November 1983.

   [81]   Nedved, R., "Telnet Terminal Location Number Option", RFC 946,
          Carnegie-Mellon University, May 1985.

   [82]   NSW Protocol Committee, "MSG: The Interprocess Communication
          Facility for the National Software Works", CADD-7612-2411,
          Massachusetts Computer Associates, BBN 3237, Bolt Beranek and
          Newman, Revised December 1976.

   [83]   Plummer, D., "An Ethernet Address Resolution Protocol or
          Converting Network Protocol Addresses to 48-bit Ethernet
          Addresses for Transmission on Ethernet Hardware", RFC 826,
          MIT-LCS, November 1982.

   [84]   Postel, J., "Active Users", RFC 866, Information
          Sciences Institute, May 1983.

   [85]   Postel, J., "A Standard for the Transmission of IP Datagrams
          over Experimental Ethernet Networks, RFC 895, Information
          Sciences Institute, April 1984.

Reynolds & Postel                                              [Page 60]

RFC 990                                                    November 1986

   [86]   Postel, J., "Character Generator Protocol", RFC 864,
          Information Sciences Institute, May 1983.

   [87]   Postel, J., "Daytime Protocol", RFC 867,
          Information Sciences Institute, May 1983.

   [88]   Postel, J., "Discard Protocol", RFC 863,
          Information Sciences Institute, May 1983.

   [89]   Postel, J., "The Domain Names Plan and Schedule", RFC 881,
          ISI, November 1983.

   [90]   Postel, J., "Echo Protocol", RFC 862,
          Information Sciences Institute, May 1983.

   [91]   Postel, J., and J. Reynolds, "File Transfer Protocol",
          RFC 959, Information Sciences Institute, October 1985.

   [92]   Postel, J., "Internet Control Message Protocol - DARPA
          Internet Program Protocol Specification", RFC 792,
          Information Sciences Institute, September 1981.

   [93]   Postel, J., "Internet Message Protocol", RFC 759, IEN 113,
          Information Sciences Institute, August 1980.

   [94]   Postel, J., "Name Server", IEN 116,
          Information Sciences Institute, August 1979.

   [95]   Postel, J., "Quote of the Day Protocol", RFC 865,
          Information Sciences Institute, May 1983.

   [96]   Postel, J., "Remote Telnet Service", RFC 818,
          Information Sciences Institute, November 1982.

   [97]   Postel, J., "Simple Mail Transfer Protocol", RFC 821,
          Information Sciences Institute, August 1982.

   [98]   Postel, J., "Telnet End of Record Option", RFC 885,
          Information Sciences Institute, December 1983.

   [99]   Hornig, C., "A Standard for the Transmission of IP Datagrams
          over Ethernet Networks, RFC 894, Symbolics, April 1984.

   [100]  Postel, J., "User Datagram Protocol", RFC 768
          Information Sciences Institute, August 1980.

Reynolds & Postel                                              [Page 61]

RFC 990                                                    November 1986

   [101]  Postel, J., ed., "Internet Protocol - DARPA Internet Program
          Protocol Specification", RFC 791, Information Sciences
          Institute, September 1981.

   [102]  Postel, J., ed., "Transmission Control Protocol - DARPA
          Internet Program Protocol Specification", RFC 793,
          Information Sciences Institute, September 1981.

   [103]  Postel, J. and D. Crocker, "Remote Controlled Transmission and
          Echoing Telnet Option", RFC 726, March 1977.

   [104]  Postel, J., and K. Harrenstien, "Time Protocol", RFC 868,
          Information Sciences Institute, May 1983.

   [105]  Postel, J. and J. Reynolds, "Telnet Extended Options - List
          Option", RFC 861, Information Sciences Institute, May 1983.

   [106]  Postel, J. and J. Reynolds, "Telnet Binary Transmission",
          RFC 856, Information Sciences Institute, May 1983.

   [107]  Postel, J. and J. Reynolds, "Telnet Echo Option", RFC 857,
          Information Sciences Institute, May 1983.

   [108]  Postel, J., and J. Reynolds, "Telnet Protocol Specification",
          RFC 854, Information Sciences Institute, May 1983.

   [109]  Postel, J. and J. Reynolds, "Telnet Status Option", RFC 859,
          Information Sciences Institute, May 1983.

   [110]  Postel, J. and J. Reynolds, "Telnet Suppress Go Ahead Option",
          RFC 858, Information Sciences Institute, May 1983.

   [111]  Postel, J. and J. Reynolds, "Telnet Timing Mark Option",
          RFC 860, Information Sciences Institute, May 1983.

   [112]  Prime, "Medusa, The Prime Ethernet", PRIME/WS/AI/86/2,
          July 1986, Framingham, MA.

   [113]  Reed, D., "Protocols for the LCS Network", Local Network Note
          3, Laboratory for Computer Science, MIT, November 1976.

   [114]  Reynolds, J. and J. Postel, "Official ARPA-Internet
          Protocols", RFC 991, Information Sciences Institute,
          November 1986.

   [115]  Rosen, E., "Exterior Gateway Protocol" RFC 827, Bolt Beranek
          and Newman, October 1982.

Reynolds & Postel                                              [Page 62]

RFC 990                                                    November 1986

   [116]  Saltzer, J. H., "Design of a Ten-megabit/sec Token Ring
          Network", MIT Laboratory for Computer Science Technical

   [117]  Scott, W. S., "2.9bsd/TIS Network Implementation", Lawrence
          Livermore National Laboratory, September 1984.

   [118]  Seamonson, L. J., and E. C. Rosen, "STUB" Exterior Gateway
          Protocol", RFC 888, BBN Communications Corporation,
          January 1984.

   [119]  Shuttleworth, B., "A Documentary of MFENet, a National
          Computer Network", UCRL-52317, Lawrence Livermore Labs,
          Livermore, California, June 1977.

   [120]  Silverman, S., "Output Marking Telnet Option", RFC 933, MITRE,
          January 1985.

   [121]  Skelton, A., S. Holmgren, and D. Wood, "The MITRE Cablenet
          Project", IEN 96, April 1979.

   [122]  Sollins, K., "The TFTP Protocol (Revision 2)", RFC 783,
          MIT/LCS, June 1981.

   [123]  Solomon, M., L. Landweber, and D. Neuhengen, "The CSNET Name
          Server", Computer Networks, v.6, n.3, pp. 161-172, July 1982.

   [124]  Solomon, M., and E. Wimmers, "Telnet Terminal Type Option",
          RFC 930, Supercedes RFC 884, University of Wisconsin, Madison,
          January 1985.

   [125]  Sproull, R., and E. Thomas, "A Networks Graphics Protocol",
          NIC 24308, August 1974.

   [126]  StJohns, M., "Authentication Service", RFC 931, TPSC,
          January 1985.

   [127]  Tappan, D. C., "The CRONUS Virtual Local Network", RFC 824,
          Bolt Beranek and Newman, August 1982.

   [128]  Taylor, J., "ERPC Functional Specification", Version 1.04,
          HYDRA Computer Systems, Inc., July 1984.

Reynolds & Postel                                              [Page 63]

RFC 990                                                    November 1986

   [129]  "The Ethernet, A Local Area Network: Data Link Layer and
          Physical Layer Specification", AA-K759B-TK, Digital Equipment
          Corporation, Maynard, MA.  Also as:  "The Ethernet - A Local
          Area Network", Version 1.0, Digital Equipment Corporation,
          Intel Corporation, Xerox Corporation, September 1980.  And:
          "The Ethernet, A Local Area Network: Data Link Layer and
          Physical Layer Specifications", Digital, Intel and Xerox,
          November 1982.  And:  XEROX, "The Ethernet, A Local Area
          Network: Data Link Layer and Physical Layer Specification",
          X3T51/80-50, Xerox Corporation, Stamford, CT., October 1980.

   [130]  "Telnet Output Approximate Message Size Option", NIC 15393,
          in: DDN Protocol Handbook, NIC 50005, December 1985.

   [131]  Cohen, D., "On Holy Wars and a Plea for Peace", IEEE Computer
          Magazine, October 1981.

   [132]  The High Level Protocol Group, "A Network Independent File
          Transfer Protocol",  INWG Protocol Note 86, December 1977.

   [133]  Tovar, "Telnet Extended ASCII Option", RFC 698, Stanford
          University-AI, July 1975.

   [134]  Uttal, J, J. Rothschild, and C. Kline, "Transparent
          Integration of UNIX and MS-DOS", Locus Computing Corporation.

   [135]  Velten, D., R. Hinden, and J. Sax, "Reliable Data Protocol",
          RFC 908, BBN Communications Corporation, July 1984.

   [136]  Wancho, F., "Password Generator Protocol",  RFC 972, WSMR,
          January 1986.

   [137]  Whelan, D., "The Caltech Computer Science Department Network",
          5052:D F:82, Caltech Computer Science Department, 1982.

   [138]  Winston, I., "Two Methods for the Transmission of IP Datagrams
          Over IEEE 802.3 Networks", RFC 948, University Of
          Pennsylvania, June 1985.

   [139]  XEROX, "Internet Transport Protocols",  XSIS 028112, Xerox
          Corporation, Stamford, Connecticut, December 1981.

Reynolds & Postel                                              [Page 64]

RFC 990                                                    November 1986


   [AB13]    Alison Brown        CORNELL   alison@CORNELL.EDU
   [AB20]    Art Berggreen       ACC       ART@ACC.ARPA
   [ABB2]    A. Blasco Bonito    CNUCE     Blasco@CNUCE-VM.ARPA
   [AD22]    Arlene DesJardins   CIT       arlene@VLSI.CALTECH.EDU
   [AG22]    Alfred Ganz         YALE      GANZ@YALE.ARPA
   [AGM]     Andy Malis          BBN       Malis@CCS.BBN.COM
   [AKC]     Albert Cheng        UIUC      acheng@UIUC.EDU
   [AL6]     Alexis Layton       CCA       alex@CCA-UNIX.ARPA
   [AP]      Alan Parker         NRL       parker@NRL-CSS.ARPA
   [ARM5]    Andrew R. Maffei    WHOI     mit-erl!aqua!arm@EDDIE.MIT.EDU
   [AV]      Al Vezza            MIT       AV@XX.LCS.MIT.EDU
   [AW34]    Albert Wong         NPS       Wong@NPS-CS.ARPA
   [AWS3]    Andy Sills          AEROSPACE Sills@AEROSPACE.ARPA
   [AXG]     Atul Garg           HP        ---none---
   [AXH]     Arthur Hartwig      UQNET     ---none---
   [AXS]     Albert Steiner      NWU       ---none---
   [AXS1]    Anthony Schoener    Applicon  ---none---
   [AXW]     Andy Wilcox         UFL       ajw%ufl.csnet@csnet-relay
   [AY5]     Akiharu Yasuda      DODIIS    dia@PAXRV-NES.ARPA
   [BA4]     Brian Anderson      BBN       baanders@CCQ.BBN.COM
   [BANDY]   Andrew S. Beals     LLNL      bandy@LLL-CRG.ARPA
   [BC14]    Robert Cattani      COLUMBIA  Cattani@CS.COLUMBIA.EDU
   [BC65]    Bill Chiarchiaro    LL        wjc@LL-VLSI.ARPA
   [BG5]     Bob Gilligan        SRI       Gilligan@SRI-SPAM.ARPA
   [BG25]    Bryan L. Gorman     SRI       GORMAN@BRAGGVAX.ARPA
   [BJL5]    Barry J. Lustig     UCLA      barry@LOCUS.UCLA.EDU
   [BJN1]    Bruce Nemnich       TMC       BJN@THINK.COM
   [BJR2]    Bill Russell        NYU       Russell@NYU.ARPA
   [BM40]    Bill Mitchell       U OF ARIZ WHM@ARIZONA.EDU
   [BN4]     Bill Nowicki        SUN       Nowicki@SUN.COM
   [BN7]     Bich T. Nguyen      SRI       btn@SRI-TSC.ARPA
   [BN9]     Bill Nesheim        CORNELL   bill@CORNELL.EDU
   [BP17]    Bobbi Phillips      SRI       bobbi@SRI-TSC.ARPA
   [BS24]    Barry Shein         BU        BZS%BU-CS@RELAY.CS.NET
   [BSW]     Barbara Seber-Wagner MITRE    bnsw@MITRE-BEDFORD.ARPA
   [BT5]     Bob Tomlinson       LANL      dspo!tomlin@LANL.ARPA
   [BWA]     Bobby W. Allen      YUMA      Allen@YUMA.ARPA
   [BXC]     Bill Cheswick       NJIT      bellcore!argus!bc@MOUTON.ARPA
   [BXD]     Brian Down          TORONTO      bdown%TORONTO@RELAY.CS.NET
   [BXE]     Bjorn Eriksen       SWEDEN    enea!ber@SEISMO.CSS.GOV
   [BXI]     Basil Irwin         UCAR      irwin%ncar@RELAY.CS.NET
   [BXL]     Barry Greenberg     LOCUS     ---none---
   [BXL1]    Bil Lewis           FMC       ---none---
   [BXM]     Burton Murray       LUCID     ---none---
   [BXR]     Bert Raphael        HP        ---none---

Reynolds & Postel                                              [Page 65]

RFC 990                                                    November 1986

   [BXS]     Ben M. Segal        CERN      ---none---
   [BXS1]    Barbara Sweeny      INDIANA
   [BXT1]    Bill Teel           INTEL     ---none---
   [CAK]     Chris Kent          PURDUE    CAK@PURDUE.EDU
   [CAL7]    Charles A. Leach    OKC       CAL@OKC-UNIX
   [CAS]     Carl Sunshine       SDC       Sunshine@ISI.EDU
   [CAS1]    Claude S. Steffey   WSMR      csteffey@WSMRCAS1.ARPA
   [CBD]     Clive B. Dawson     MCC       AI.CLIVE@MCC.COM
   [CBP]     Brian Pinkerton     WISCONSON Brian@RSCH.WISC.EDU
   [CJC3]    Chase Cotton        UDEL      Cotton@HUEY.UDEL.EDU
   [CH2]     Charles Hornig      SYMBOLICS CAH@MC.LCS.MIT.EDU
   [CJW2]    Cliff Weinstein     LL        cjw@LL-SST.ARPA
   [CLH3]    Charles Hedrick     RUTGERS   Hedrick@RED.RUTGERS.EDU
   [CMR]     Craig Rogers        ISI       Rogers@ISI.EDU
   [CP10]    Craig Partridge     BBN       craig@UNIX.BBN.COM
   [CSTACY]  Christopher Stacy   Palladian CStacy@AI.AI.MIT.EDU
   [CXJ]     Chris Johnson       NU
   [CXL]     Clifford A. Lynch   BERKELEY
   [CXR]     Charles Ray         CIT       ---none---
   [DAM1]    David A. Mosher     BERKELEY  Mosher@UCBARPA.BERKELEY.EDU
   [DAVE]    David Roode         IntelliCorp
   [DB35]    Danny Branis        HUJ     danny%ISRAEL.CSNET@RELAY.CS.NET
   [DBJ]     David B. Johnson    DRILLTECH DBJ@RICE.EDU
   [DCP1]    David Plummer       MIT       DCP@SYMBOLICS.ARPA
   [DDC1]    David Clark         MIT       DClark@MIT-MULTICS.ARPA
   [DT15]    Dan Tappan          BBN       Tappan@G.BBN.COM
   [DG28]    David L. Gehrt      RIACS     Dave@RIACS.ARPA
   [DH17]    Douglas Hirsch      BBN       hirsch@CCS.BBN.COM
   [DHH]     Doug Hunt           BBN       DHunt@CCJ.BBN.COM
   [DJF]     David J. Farber     UDEL      Farber@HUEY.UDEL.EDU
   [DJV1]    Darrel J. Van Buer  SDC       vanbuer@USC-ECL.USC.EDU
   [DK2]     Dean B. Krafft      CORNELL   Dean@CORNELL.EDU
   [DLM1]    David Mills         LINKABIT  Mills@D.ISI.EDU
   [DPR]     David Reed          MIT-LCS   Reed@MIT-MULTICS.ARPA
   [DRP]     Don Provan          LLNL      Provan@LLL-MFE.ARPA
   [DRS4]    Dennis R. Smith     USC       Smith@USC-ECLC.USC.EDU
   [DSR]     Dale Russell        SDC       SWG.Dale@ISI.EDU
   [DSW]     Dan Whelan          CALTECH   Dan@CIT-20.CALTECH.EDU
   [DVC]     Don Cone            SRI       CONE@SRI-SPAM.ARPA
   [DXB]     David Bloom         RUTGERS   andromeda!bloom@RUTGERS.EDU
   [DXB1]    Dave Bullard        CLEMSON
   [DXB2]    Dave Borman         CRAY      dab@UMN-REI-UC.ARPA

Reynolds & Postel                                              [Page 66]

RFC 990                                                    November 1986

   [DXD]     Dennis J.W. Dube    VIA SYSTEMS ---none---
   [DXE]     Deborah Estrin      USC       Estrin@USC-CSEB.USC.EDU
   [DXG]     David Goldberg      SMI       sun!dg@UCBARPA.BERKELEY.EDU
   [DXK]     Doug Konkin         ARC
   [DXK1]    David M. Keirsey    HUGHES    KEIRSEY@USC-ECL.ARPA
   [DXO]     David Oliver        ANSA      ANSA%ALVEY.UK@CS.UCL.AC.UK
   [DXS]     Don Scelza          PERQ      ---none---
   [DXT]     Dave Taylor         INFERENCE ---none---
   [DXT1]    Doug A. Thomae      HARRIS    ---none---
   [DXW]     David C. M. Wood    CU        ---none---
   [EAK1]    Earl Killian        LLL       EAK@S1-C.ARPA
   [EBM]     Eliot Moss          MIT       EBM@XX.LCS.MIT.EDU
   [EC5]     Ed Cain             DCEC      cain@EDN-UNIX.ARPA
   [EF5]     Ed Franceschini     NYU       Franceschini@NYU.ARPA
   [EHP]     Ed Perry            SRI       Perry@SRI-KL.ARPA
   [EJN1]    Eric J. Norman      WISC      EJNorman@UNIX.MACC.WISC.EDU
   [ERK3]    Edward Kozel        SRI       Kozel@SRI-SPAM.ARPA
   [EXY]     Elaine Yamin        ATT       ---none---
   [FAS]     Fred Segovich       GSWD      fred@GSWD-VMS.ARPA
   [FJW]     Frank J. Wancho     WSMR      WANCHO@SIMTEL20.ARPA
   [FLM2]    F. Lee Maybaum      MILNET    Maybaum@DDN1.ARPA
   [FRAN]    Francine Perillo    SRI       Perillo@NIC.SRI.COM
   [FW17]    Frederic Wendling   NSF       ---none---
   [FXA]     Frederick M. Avolio DECUAC    Avolio@DECUAC.DEC.COM
   [FXH]     Felix Hou           JVNC    Hou%pucc.bitnet@WISCVM.WISC.EDU
   [FXS]     Frank Solensky      PRIME     ---none---
   [GAA]     Glenn A. Adams, Jr. MIT/LL    glenn@LL-XN.ARPA
   [GB7]     Gerd Beling         DFVLR     GBELING@ISI.EDU
   [GBR]     G. Brendan Reilly   WHARTON   Reilly@WHARTON.ARPA
   [GC]      Graham Campbell     BNL       gc@BNL.ARPA
   [GEOF]    Geoff Goodfellow    SRI       Geoff@SRI-CSL.ARPA
   [GH29]    Gregory Hidley      UCSD      hidley@UCSD.EDU
   [GIH]     Glenn I. Hastie II  SRI       Hastie@SRI-SPAM.ARPA
   [GLH5]    Gavin L. Hamphill   DREA      Hemphill@DREA-XX.ARPA
   [GW22]    Grant Weiler        UTAH      Weiler@UTAH-20.ARPA
   [GXB]     George Broomell     UKY
   [GXG]     Gary Gagnon         CSC       ---none---
   [GXL]     Guillermo A. Loyola IBM       Loyola%ibm-sj@RELAY.CS.NET
   [GXM]     Gaylord Miyata      Goldhill
   [GXP]     Gill Pratt          MIT       gill%mit-ccc@MC.LCS.MIT.EDU
   [GXP1]    Gottfried Petschl   TUNET     ---none---
   [GXS]     Fene Spafford       GATECH    spaf@GATECH.EDU
   [GXW]     Gary Wallace        UMASS     gary%umass.csnet@RELAY.CS.NET
   [GXW1]    George Ward         Motorola  ---none---

Reynolds & Postel                                              [Page 67]

RFC 990                                                    November 1986

   [HCF2]    Harry Forsdick      BBN       Forsdick@A.BBN.COM
   [HDW2]    Howard Wactlar      CMU       Wactlar@CMU-CS-A.EDU
   [HGM]     Hallam Murray       XEROX     Murray.PA@XEROX.COM
   [HM]      Hank Magnuski       ---       JOSE.PA@XEROX.COM
   [HWB]     Hans-Werner Braun   MICHIGAN  HWB@GW.UMICH.EDU
   [HXC]     Haesoon Cho         KAIST    hscho%kaist.csnet@RELAY.CS.NET
   [HXH]     Harry G. Heard      JVNC      ---none---
   [IEEE]    Vince Condello      IEEE      ---none---
   [IW5]     Ira Winston         UPENN     Ira%upenn.csnet@RELAY.CS.NET
   [JA1]     Jules P. Aronson    NLM       Aronson@NLM-MCS.ARPA
   [JAG3]    Jeff Gumpf          CWRU      G.Gumpf@CS.COLUMBIA.EDU
   [JAKE]    Jake Feinler        SRI       Feinler@SRI-NIC.ARPA
   [JBP]     Jon Postel          ISI       Postel@ISI.EDU
   [JBW1]    Joseph Walters, Jr. BBN       JWalters@CCX.BBN.COM
   [JC11]    Jim Clifford        LANL      jrc@LANL.ARPA
   [JC106]   Joel Conklin        GE        Conklin@GE-CRD.ARPA
   [JCN2]    John C. Nunn        NBS       NUNN@NBS-VMS.ARPA
   [JD21]    Jonathan Dreyer     BBN       JDreyer@CCV.BBN.COM
   [JDG]     Jim Guyton          RAND      guyton@RAND-UNIX.ARPA
   [JEM]     Jim Mathis          SRI       Mathis@SRI-KL.ARPA
   [JFH2]    Jack Haverty        BBN       Haverty@CCV.BBN.COM
   [JFW]     Jon F. Wilkes       STC       Wilkes@STC.ARPA
   [JGH]     Jim Herman          BBN       Herman@CCJ.BBN.COM
   [JG46]    Jonathan Goodman    YALE      Goodman@YALE.ARPA
   [JHH8]    Jim Haynes          UCSC
   [JK7]     Jim Koda            ISI       Koda@ISI.EDU
   [JKR1]    Joyce K. Reynolds   ISI       JKREYNOLDS@ISI.EDU
   [JL15]    Jay Lepreau         UTAH      Lepreau@UTAH-CS.ARPA
   [JLM23]   John L. Mills       HONEYWELL
   [JLR4]    John Romkey         FTPSW     Romkey@BORAX.LCS.MIT.EDU
   [JNL1]    John Larson         XEROX
   [JO5]     John O'Donnell      YALE      ODonnell@YALE.ARPA
   [JR15]    John Rhodes         LOGNET    JRhodes@LOGNET2.ARPA
   [JR17]    John L. Robinson    CANADA    Robinson@DMC-CRC.ARPA
   [JRL8]    John LoVerso        SUNY      LoVerso%buffalo@RELAY.CS.NET
   [JRM1]    John Mullen         MITRE     Mullen@MITRE.ORG
   [JRS8]    Jeffrey R. Schwab   PURDUE    jrs@PURDUE.EDU
   [JS38]    Joseph Sventek      LBL       JSSventek@LBL.ARPA
   [JSG5]    Jon Goodridge       BBN       jsg@CCM.BBN.COM
   [JSQ1]    John S. Quarterman  UT        jsq@SALLY.UTEXAS.EDU
   [JW1]     Jill Westcott       BBN       Westcott@A.BBN.COM
   [JWF]     Jim Forgie          LL        jwf@LL-EN.ARPA
   [JWO1]    James W. O'Toole    UMD       james@MIMSY.UMD.EDU
   [JXA]     Jim Adams           MACOM     ---none---

Reynolds & Postel                                              [Page 68]

RFC 990                                                    November 1986

   [JXB]     John Blair          NEOCM
   [JXB1]    Jay C. Bergeron     FACTRON   ---none---
   [JXC]     Jeffrey D. Case     UTK
   [JXE]     Jan Ellison         GTE       ---none---
   [JSD4]    Jean Darling        WISC-MADI Darling@RSCH.WISC.EDU
   [JXH]     Jeffrey Honig       CLARKSON
   [JXH1]    Jack Hahn           UMDC   hahn%umdc.bitnet@WISCVM.WISC.EDU
   [JXJ]     Jackie Jones        NBS       ---none---
   [JXJ1]    James Jokl          UVA       ---none---
   [JXJ2]    Jeffrey Jongeward   BAC
   [JXM]     Jim McClurg         Sperry    ---none---
   [JXO]     Jack O'Neil         ENCORE    ---none---
   [JXR]     Joe Ragland         TUCC      ---none---
   [JXS]     J. Simonetti        SUNY      joes@SBCS.ARPA
   [JXS1]    Jery Scott          TWG       ---none---
   [JXW]     John Wray           RSRE      JCW2%RSRE@CS.UCL.AC.UK
   [JXY]     Joe Yancone         USARMY    Yancone@CRDC.ARPA
   [KCS1]    Kevin C. Smallwood  PURDUE    kcs@PURDUE.EDU
   [KFD]     Ken Dove            AIDS      kfd@AIDS-UNIX.ARPA
   [KLH]     Ken Harrenstien     SRI       KLH@NIC.SRI.COM
   [KMC3]    Kenneth M. Crepea   SRI       Crepea@SRI-SPAM.ARPA
   [KO11]    Kevin O'Keefe       HAZELTINE Hazeltine@ISI.EDU
   [KRS]     Karen Sollins       MIT       Sollins@XX.LCS.MIT.EDU
   [KSL]     Kirk Lougheed       SU        Lougheed@SIERRA.STANFORD.EDU
   [KTP]     Kenneth T. Pogran   BBN       Pogran@CCQ.BBN.COM
   [KWP]     Kevin W. Paetzold   DEC       Paetzold@MARLBORO.DEC.COM
   [KXC]     Ken Chen            Perceptronics  ---none---
   [KXC1]    Kevin B. Casey      Gallaudet
   [KXS]     Kathy Simpson       OSU       ---none---
   [LB3]     Len Bosack          STANFORD  Bosack@SU-SCORE.STANFORD.EDU
   [LB16]    Liudvikas Bukys     ROCHESTER Bukys@ROCHESTER.ARPA
   [LCN]     Lou Nelson          AEROSPACE Lou@AEROSPACE.ARPA
   [LCS]     Lou Schreier        SRI       Schreier@D.ISI.EDU
   [LH2]     Lincoln Hu          COLUMBIA  Hu@CS.COLUMBIA.EDU
   [LOU]     Lou Salkind         NYU       Salkind@NYU.ARPA
   [LM8]     Liza Martin         MIT-LCS   Martin@XX.LCS.MIT.EDU
   [LRB]     Larry Bierma        NPRDC     Bierma@NPRDC.ARPA
   [LW26]    Linda Winkler       ARGONNE
   [LWR]     Larry Robinson      LLNL      lwr@S1-C.ARPA
   [LXL]     Len Lattanzi        SENTRY    ---none---
   [LXR]     Lawrence Rogers     Princeton ---none---

Reynolds & Postel                                              [Page 69]

RFC 990                                                    November 1986

   [LXR1]    Louis Romero        MMAERO    MMAERO@ISI.EDU
   [MA]      Mike Accetta        CMU       MIKE.ACCETTA@CMU-CS-A.EDU
   [MAB4]    Mark Brown          USC       Mark@USC-ECLB.USC.EDU
   [MAE]     Marc A. Elvy        HARVARD   elvy@HARVARD.EDU
   [MBG]     Michael Greenwald   MIT-LCS   Greenwald@MIT-MULTICS.ARPA
   [MB]      Michael Brescia     BBN       Brescia@CCV.BBN.COM
   [MB31]    Michael BereschinskyUSARMY    Bereschinsky@D.ISI.EDU
   [MC17]    Matt Crawford       UCHICAGO  Crawford@ANL-MCS.ARPA
   [MCA1]    Mary C. Akers       FISG      MCAkers@TPSC-T.ARPA
   [MCSJ]    Mike StJohns        TPSC      StJohns@MIT-MULTICS.ARPA
   [MDC]     Martin D. Connor    MIT AI    Marty@HT.AI.MIT.EDU
   [MF31]    Martin J. Fouts     NASA-AMES fouts@ARC.NASA.GOV
   [MH12]    Mark Horton         ATT       mark@UCBARPA.BERKELEY.EDU
   [MJM2]    Mike Muuss          BRL       Mike@BRL.MIL
   [MK17]    Mike Karels         BERKELEY  Karels@UCBARPA.BERKELEY.EDU
   [MKL1]    Mark Lottor         MIT       MKL@NIC.SRI.COM
   [MLC]     Mike Corrigan       DDN       Corrigan@DDN1.ARPA
   [MMM3]    Michael McDonnell   USAETL    Mike@ETL.ARPA
   [MO2]     Michael O'Brien     RAND      OBrien@RAND-UNIX.ARPA
   [MO14]    Michele Olivant     JHU       Olivant@HAWAII-EMH.ARPA
   [MPM]     M. Preston Mullen   NRL       mullen@NRL-CSS.ARPA
   [MRC]     Mark Crispin        STANFORD
   [MS9]     Martin Schoffstall  RPI       schoff%rpi@RELAY.CS.NET
   [MS56]    Marvin Solomon      WISC      Solomon@WISC.EDU
   [MSM1]    Milo S. Medin       AMES      medin@ARC.NASA.GOV
   [MTR]     Marshall Rose       NRTC      MRose@NRTC.ARPA
   [MXA]     Melanie Anderson    UIUC      Melanie@UIUC.EDU
   [MXA1]    M. Aziza            INRIA     ---none---
   [MXA2]    Mats Andersson      Sweden    ---none---
   [MXC]     Mike O'Connor       SPACECOM  oconnor@TRANTOR.UMD.EDU
   [MXF]     Mark Fedor          NYSER     Fedor@TCGOULD.TN.CORNELL.EDU
   [MXG]     Mike Gilbert        SLI  Software-Leverage@USC-ECLB.USC.EDU
   [MXH]     Martin Hayman       Symbolics ---none---
   [MXK]     Michael Kazar       CMU       Mike.Kazar@CMU-CS-K.EDU
   [MXL]     Michael Levine      CMU       Levine@A.PSY.SMU.EDU
   [MXM]     Marc M. Meilleur    COINS     COINS@ISI.EDU
   [MXP]     Michael K. Peterson HUGHES    scgvaxd!mkp@CSVAX.CALTECH.EDU
   [MXP1]    Mark C. Powers      NSWC      mpowers@NSWC-G.ARPA
   [MXR]     Mark A. Rosenstein  MIT       mark@BORAX.LCS.MIT.EDU
   [MXR1]    Mike Russell        BROWN     ---none---
   [MXS]     Marc Shapiro        INRIA     Marc.Shapiro@C.CS.CMU.EDU
   [MXS1]    Marina Simonians    RDL       ---none---
   [MXS2]    Mark Starner        SDC       burdvax!starner@PURDUE.EDU
   [MXS3]    Mark St. Paul       NMSU     stpaul%nmsu.csnet@RELAY.CS.NET
   [MXV]     Mark Vasoll         OKSTATE

Reynolds & Postel                                              [Page 70]

RFC 990                                                    November 1986

   [NAL]     Neil Lann           LLL       NAL@LLL-TIS-B.ARPA
   [NC3]     J. Noel Chiappa     MIT       JNC@XX.LCS.MIT.EDU
   [NG]      Neil Gower          ROCKWELL  GOWER@D.ISI.EDU
   [NH2]     Nat Howard          IM        nrh@DDNT.ARPA
   [NMM]     Mike Minnich        UDELEE    MMinnich@HUEY.UDEL.EDU
   [NXS]     Nayel el-Shafei      HP
   [PA5]     Philip Almquist     STANFORD Almquist@SU-SCORE.STANFORD.EDU
   [PAM6]    Paul McNabb         RICE      pam@PURDUE.EDU
   [PFS2]    Paul Sass           CECOM     Sass@D.ISI.EDU
   [PGM]     Paul G. Milazzo     RICE      Milazzo@RICE.EDU
   [PHD1]    Pieter Ditmars      BBN       pditmars@CCX.BBN.COM
   [PK]      Peter Kirstein      UCL       Kirstein@ISI.EDU
   [PK28]    Philip R. Karn, Jr. BCR       Karn@BELLCORE-CS-GW.ARPA
   [PL4]     Phil Lapsley        BERKELEY  phil@UCBARPA.BERKELEY.EDU
   [PM1]     Paul Mockapetris    ISI       Mockapetris@ISI.EDU
   [PM4]     Paul Martin         SRI       PMartin@SRI-AI.ARPA
   [PS27]    Paal Spilling       NTA       Spilling@D.ISI.EDU
   [PXA]     Phillip G. Apley    BITSTREAM PGA@MIT-OZ.ARPA
   [PXB]     Pat Boyle           UBC       boyle.ubc@RELAY.CS.NET
   [PXC]     Pam Cance           XEROX     cance.osbunorth@XEROX.COM
   [PXD]     Pete Delaney        ECRC      pete%ecrcvax@RELAY.CS.NET
   [PXH]     Paul Hyder          UCSB
   [PXH1]    Peter Ho            HAC       ---none---
   [PXM]     Pat Marques         NSRDC     marques@DTRC.ARPA
   [PXN]     Peter Nellessen     SIEMENS   crtvax!pn@CMU-CS-SPICE.EDU
   [PXP]     Paul Patton         HONEYWELL ---none---
   [RA11]    Rick Adams          CCI       Rick@SEISMO.CSS.GOV
   [RA17]    Bob Albrightson     WASHINGTON BOB@WASHINGTON.ARPA
   [RB9]     Richard Bisbey      ISI       Bisbey@ISI.EDU
   [RBN1]    Ronald Natalie, Jr. BRL       ron@TGR.BRL.MIL
   [RBW]     Richard B. Wales    UCLA      WALES@LOCUS.UCLA.EDU
   [RHC3]    Robert Cole         UCL       robert@CS.UCL.AC.UK
   [RC77]    Robert Carey        YALE      CAREY@YALE.ARPA
   [RDB2]    Robert Bressler     BBN       Bressler@CCW.BBN.COM
   [RDR4]    Dennis Rockwell     BBN       DRockwell@SH.CS.NET
   [RE22]    Rand Enas           CDC       CDC-DDN@DDN2.ARPA
   [RFD1]    Robert F. Donnelly  ARDC      donnelly@ARDEC.ARPA
   [RG12]    Roger L. Gulbranson UMINN     ROGERG@UMN-UCC-VA.ARPA
   [RH6]     Robert Hinden       BBN       Hinden@CCV.BBN.COM
   [RH60]    Roger Hale          MIT       Roger@LL-SST.ARPA
   [RHC3]    Robert Cole         UCL       Robert@CS.UCL.AC.UK
   [RHS4]    Richard H. Sweed    RADC      Sweed@RADC-20.ARPA
   [RHT]     Robert Thomas       BBN       BThomas@F.BBN.COM
   [RKJ2]    Richard Johnsson    DEC       johnsson@DECWRL.DEC.COM
   [RLB3]    Ronald L. Broersma  NOSC      Ron@NOSC.MIL
   [RLH2]    Ronald L. Hartung   NSWC      ron@NSWC-WO.ARPA

Reynolds & Postel                                              [Page 71]

RFC 990                                                    November 1986

   [RLS6]    Ronald L. Smith     COINS     COINS@ISI.EDU
   [RM8]     Roy Marantz         RUTGERS   Marantz@RUTGERS.EDU
   [RN6]     Rudy Nedved         CMU       Rudy.Nedved@CMU-CS-A.EDU
   [RNM1]    Neil MacKenzie      RSRE      CLE%RSRE@CS.UCL.AC.UK
   [RR2]     Raleigh Romine      TELEDYNE  romine@SEISMO.CSS.GOV
   [RR18]    Ron Reisor          UDEL      ron@HUEY.UDEL.EDU
   [RR26]    William R. Reilly   USARMY    RREILLY@JPL-MILVAX.ARPA
   [RSD2]    Robert S. Dixon     OHIO      ---none---
   [RSM1]    Robert S. Miles     NRTC      RSMILES@USC-ECL.USC.EDU
   [RTL]     Richard Lacoss      MITLL     Lacoss@LL-XN.ARPA
   [RWS4]    Robert W. Scheifler ARGUS     RWS@XX.LCS.MIT.EDU
   [RWT2]    Robert W. Tinker    DTNS      tinker@DTIX.ARPA
   [RXA]     Rex Aschenbrenner   CGI    Rex%CGIVB%CGI.CSNET@RELAY.CS.NET
   [RXB]     Rafael Bracho       SPAR      RXB@SRI-KL.ARPA
   [RXB1]    Randolph Bentson    CSU      Bentson%ColoState@RELAY.CS.NET
   [RXB2]    Robert Bybee        CHROMATICS ---none---
   [RXD]     Regine Dussaulx     CCVR      ---none---
   [RXE]     R. Enas             CDC       CDC-DDN@DDN2.ARPA
   [RXG]     Richard Gopstein    RCA       Gopstein@RUTGERS.EDU
   [RXH]     Russell Hobby       UCDAVIS
   [RXJ]     Ronald Johnson      APPLE     rlj%apple@RELAY.CS.NET
   [RXJ1]    Richard A. Jones    UColoB
   [RXM]     Robert Myhill       BBN       Myhill@CCS.BBN.COM
   [RXM1]    Robert McQueen      SIT      SIT.MCQUEEN@CU20B.COLUMBIA.EDU
   [SA1]     Sten Andler         ARPA
   [SA2]     Saul Amarel         ARPA      Amarel@ISI.EDU
   [SA29]    Susan Ament         EMORY     OSSSA@EMORY.ARPA
   [SAK3]    Steven A. Kahn      JHAPL     Steve@APLVAX.ARPA
   [SB28]    Scott Bradner       HARVARD   sob@HARVARD.EDU
   [SC3]     Steve Casner        ISI       Casner@ISI.EDU
   [SGC]     Steve Chipman       BBN       Chipman@F.BBN.COM
   [SHB]     Steven Blumenthal   BBN       BLUMENTHAL@VAX.BBN.COM
   [SIP]     Serge Polevitzky    SDSC      SERGE@NOSC-F4.MIL
   [SK8]     Steve Kille         UCL       Steve@CS.UCL.AC.UK
   [SM6]     Sean McLinden       DSL       McLinden@PITTSBURGH.EDU
   [SMF]     Steven M. Feldman   TYMNET
   [SSB]     Scott S. Bertilson  UMN       arpaadm@UMN-REI-UC.ARPA
   [SXB]     Steve Byrne         TARTAN    Byrne@CMU-CS-C.EDU
   [SXB1]    Scott A. Baird      FORMATIVE ---none---
   [SXF]     Steve Fogel         MTCS
   [SXH]     Steven L. Howell    NSWCWO    ---none---
   [SXI]     Slawomir Ilnicki    HP        ---none---
   [SXM]     Scott Marcus        SPARTACUS ---none---

Reynolds & Postel                                              [Page 72]

RFC 990                                                    November 1986

   [SXM1]    Scooter Morris      GENENTECH scooter@CGL.UCSF.EDU
   [SXS]     Steve Silverman     MITRE     Blankert@MITRE-GATEWAY.ORG
   [SXS1]    Steven J. Schroeder PENNSTATE
   [SXT]     S. Takagi           ICOT
   [TE2]     Timothy Eldredge    TEK       G.ELDRE@SU-SCORE.ARPA
   [TF6]     Thomas Ferrin       UCSF      Ferrin@CGL.UCSF.EDU
   [TH15]    Tracy Holt          GMU  Holt%gmuvax.bitnet@WISCVM.WISC.EDU
   [THD]     Thomas Dunigan      ORNL      dunigan@ORNL-MSR.ARPA
   [TM10]    Tracy Mallory       BBN       TMallory@CCV.BBN.COM
   [TML]     T. Michael Louden   MITRE     Louden@MITRE-GW.ORG
   [TRG4]    Tim Gielbelhaus     HONEYWELL Giebelhaus@HI-MULTICS.ARPA
   [TXB]     Ted Baker           FSU       baker@WASHINGTON.ARPA
   [TXC]     Tony Cincotta       DTNSRDC   tony@NALCON.ARPA
   [TXM]     Trudy Miller        ACC       Trudy@ACC.ARPA
   [TXN]     Todd Nugent         U CHICAGO Nugent@ANL-MCS.ARPA
   [TXR]     Tim Radzykewycz     GE      calma!radzy@UCBVAX.BERKELEY.EDU
   [TXT]     Terry Terbush       GWU    tlt%gwuvm.bitnet@WISCVM.WISC.EDU
   [TXW]     Tom Wadlow          LLL       TAW@S1-C.ARPA
   [UXB]     Ulf Bilting         CHALMERS  bilting@PURDUE.EDU
   [WCB3]    William C. Bard     UTexas    bard@NGP.CC.UTEXAS.EDU
   [WDL]     Walter Lazear       MITRE     Lazear@MITRE.ORG
   [WF3]     William E. Fink     NRLRCD    bill@NRL.ARPA
   [WG]      Wayne Graves        LBL       WLGraves@LBL.ARPA
   [WJC2]    Bill Croft          STANFORD  Croft@SUMEX-AIM.ARPA
   [WM3]     William Melohn      DEC       Melohn@MARLBORO.DEC.COM
   [WPJ]     William Jones       USRA      Jones@AMES-VMSB.ARPA
   [WW2]     Wally Wedel         NBI       wedel@NGP.UTEXAS.EDU
   [WWS]     Bill Seemuller      USARMY    bill@ETL.ARPA
   [WXB]     William L. Biagi    CISCO     ---none---
   [WXL]     William Lampeter    UR        bill@ROCHESTER.ARPA
   [WXM]     William Macgregor   BBN       macg@BBN.COM
   [YXN]     Yen Nguyen          ARINC     Yen@ARINC-GW.ARPA
   [YXS]     Yaski Saito         NTT       NTT-20!yaski@SU-SHASTA.ARPA
   [ZSU]     Zaw-Sing Su         SRI       ZSu@SRI-TSC.ARPA

Reynolds & Postel                                              [Page 73]

RFC 990                                                    November 1986
Appendix A

                               APPENDIX A

   Network Numbers

      The network numbers in class A, B, and C network addresses are
      allocated among Research, Defense, Government (Non-Defense) and
      Commercial uses.

      Class A (highest-order bit 0)

         Research allocation:             8
         Defense allocation:             24
         Government allocation:          24
         Commercial allocation:          94
         Reserved Addresses:   (0, 127)
         Total                          128

      Class B (highest-order bits 1-0)

         Research allocation:          1024
         Defense allocation:           3072
         Government allocation:        3072
         Commercial allocation:       12286
         Reserved Addresses: (0, 16383)
         Total                        16384

      Class C (highest-order bits 1-1-0)

         Research allocation:           65536
         Defense allocation:           458725
         Government allocation:        458725
         Commercial allocation:       1572862
         Reserved Addresses: (0, 2097151)
         Total                        2097152

      Class D (highest-order bits 1-1-1-0)

         All addresses in this class are used for multicast addresses.

      Class E (highest-order bits 1-1-1-1)

         All addresses in this class are reserved for future use.

Reynolds & Postel                                              [Page 74]

RFC 990                                                    November 1986
Appendix A

      Within the Research community, network identifiers will only be
      granted to applicants who show evidence that they are acquiring
      standard Bolt Beranek and Newman gateway software or have
      implemented or are acquiring a gateway meeting the Exterior
      Gateway Protocol requirements.  Acquisition of the Berkeley BSD
      4.3 UNIX software might be considered evidence of the latter.

      Experimental networks which later become operational need not be
      renumbered.  Rather, the identifiers could be moved from Research
      to Defense, Government or Commercial status.  Thus, network
      identifiers may change state among Research, Defense, Government
      and Commercial, but the number of identifiers allocated to each
      use must remain within the limits indicated above.  To make
      possible this fluid assignment, the network identifier spaces are
      not allocated by simple partition, but rather by specific

   Protocol Identifiers

      These assignments are shared by the four communities.

   Port Numbers

      These assignments are shared by the four communities.

   ARPANET Link Numbers

      These assignments are shared by the four communities.

   IP Version Numbers

      These assignments are shared by the four communities.

   TCP, IP and Telnet Option Identifiers

      These assignments are shared by the four communities.


      Joyce Reynolds is the coordinator for all number assignments.

Reynolds & Postel                                              [Page 75]