rfc776.txt

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

   Socket Assignments:

      General Assignments:

         Decimal   Octal     Description
         -------   -----     -----------
         0-63      0-77      Network Wide Standard Function
         64-131    100-203   Hosts Specific Functions
         132-223   204-337   Reserved for Future Use
         224-255   340-377   Any Experimental Function





















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RFC 776                                                     January 1981
                                                        Assigned Numbers
Port or Socket Numbers



      Specific Assignments:

         Network Standard Functions

         Decimal   Octal     Description                      References
         -------   -----     -----------                      ----------
         1         1         Old Telnet                         [40,JBP]
         3         3         Old File Transfer            [27,11,24,JBP]
         5         5         Remote Job Entry                 [6,17,JBP]
         7         7         Echo                               [35,JBP]
         9         11        Discard                            [32,JBP]
         11        13        Who is on or SYSTAT                   [JBP]
         13        15        Date and Time                         [JBP]
         15        17        Who is up or NETSTAT                  [JBP]
         17        21        Short Text Message                    [JBP]
         19        23        Character generator or TTYTST      [31,JBP]
         21        25        New File Transfer                  [36,JBP]
         23        27        New Telnet                         [41,JBP]
         25        31        Unassigned                            [JBP]
         27        33        NSW User System w/COMPASS FE       [14,RHT]
         29        35        MSG-3 ICP                          [29,RHT]
         31        37        MSG-3 Authentication               [29,RHT]
         33        41        Unassigned                            [JBP]
         35        43        IO Station Spooler                    [JBP]
         37        45        Time Server                        [22,JBP]
         39        47        Unassigned                            [JBP]
         41        51        Graphics                        [46,17,JBP]
         42        52        Name Server                        [38,JBP]
         43        53        WhoIs                                [JAKE]
         45        55        Message Processing Module          [37,JBP]
         47        57        NI FTP                             [50,CJB]
         49        61        RAND Network Graphics Conference   [30,MO2]
         51        63        Unassigned                            [JBP]
         53        65        AUTODIN II FTP                     [21,EC5]
         55        67        ISI Graphics Language               [3,RB6]
         57        71        Mail Transfer                      [45,JBP]
         59-63     73-77     Unassigned                            [JBP]












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RFC 776                                                     January 1981
                                                        Assigned Numbers
Port or Socket Numbers



         Host Specific Functions

         Decimal   Octal     Description                      References
         -------   -----     -----------                      ----------
         65        101       Unassigned                            [JBP]
         67        103       Datacomputer at CCA                 [8,JZS]
         69        105       Unassigned                            [JBP]
         69        105       Trivial File Transfer              [47,KRS]
         71        107       NETRJS (EBCDIC) at UCLA-CCN      [5,17,RTB]
         73        111       NETRJS (ASCII-68) at UCLA-CCN    [5,17,RTB]
         75        113       NETRJS (ASCII-63) at UCLA-CCN    [5,17,RTB]
         77        115       any private RJE server                [JBP]
         79        117       Name or Finger                  [23,17,KLH]
         81        121       Unassigned                            [JBP]
         83        123       MIT ML Device                        [MOON]
         85        125       MIT ML Device                        [MOON]
         87        127       any terminal link                     [JBP]
         89        131       SU/MIT Telnet Gateway                 [MRC]
         91        133       MIT Dover Spooler                     [EBM]
         93        135       Unassigned                            [JBP]
         95        137       SUPDUP                             [15,MRC]
         97        141       Datacomputer Status                 [8,JZS]
         99        143       CADC - NIFTP via UCL                  [PLH]
         101       145       NPL - NIFTP via UCL                   [PLH]
         103       147       BNPL - NIFTP via UCL                  [PLH]
         105       151       CAMBRIDGE - NIFTP via UCL             [PLH]
         107       153       HARWELL - NIFTP via UCL               [PLH]
         109       155       SWURCC - NIFTP via UCL                [PLH]
         111       157       ESSEX - NIFTP via UCL                 [PLH]
         113       161       RUTHERFORD - NIFTP via UCL            [PLH]
         115-129   163-201   Unassigned                            [JBP]
         131       203       Datacomputer                        [8,JZS]

         Reserved for Future Use

         Decimal   Octal     Description                      References
         -------   -----     -----------                      ----------
         132-223   204-337   Reserved                              [JBP]











Postel                                                          [Page 7]


RFC 776                                                     January 1981
                                                        Assigned Numbers
Port or Socket Numbers



         Experimental Functions

         Decimal   Octal     Description                      References
         -------   -----     -----------                      ----------
         224-239   340-357   Unassigned                            [JBP]
         241       361       NCP Measurement                     [9,JBP]
         243       363       Survey Measurement                   [2,AV]
         245       365       LINK                               [7,RDB2]
         247       367       TIPSRV                                [RHT]
         249-255   371-377   RSEXEC                             [51,RHT]

                         ASSIGNED 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.  Some time after the ARPANET Host-to-Host (AHHP) protocol
   was defined and, by now, some time ago the definition of this field
   was changed to "Message-ID" and the length to 12 bits. The name link
   now refers to the high order 8 bits of this 12 bit message-id field.
   The low order 4 bits of the message-id field are to be zero unless
   specifically specified otherwise for the particular protocol used on
   that link.  The Host/IMP interface is defined in BBN report 1822 [1].

   Link Assignments:

      Decimal   Octal     Description                         References
      -------   -----     -----------                         ----------
      0         0         AHHP Control Messages              [28,17,JBP]
      1         1         Reserved                                 [JBP]
      2-71      2-107     AHHP Regular Messages              [28,17,JBP]
      72-150    110-226   Reserved                                 [JBP]
      151       227       CHAOS Protocol                          [MOON]
      152       230       PARC Universal Protocol               [4,EAT3]
      153       231       TIP Status Reporting                     [JGH]
      154       232       TIP Accounting                           [JGH]
      155       233       Internet Protocol (regular)           [33,JBP]
      156-158   234-236   Internet Protocol (experimental)      [33,JBP]
      159-191   237-277   Measurements                           [9,VGC]
      192-195   300-303   Unassigned                               [JBP]
      196-255   304-377   Experimental Protocols                   [JBP]
      224-255   340-377   NVP                                 [12,17,DC]
      248-255   370-377   Network Maintenance                      [JGH]







Postel                                                          [Page 8]


RFC 776                                                     January 1981
                                                        Assigned Numbers
Documents



                               DOCUMENTS
                               ---------

   [1]    BBN, "Specifications for the Interconnection of a Host and an
          IMP", Report 1822, Bolt Beranek and Newman, Cambridge,
          Massachusetts, May 1978.

   [2]    Bhushan, A., "A Report on the Survey Project", RFC 530,
          NIC 17375, 22 June 1973.

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

   [4]    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.

   [5]    Braden, R., "NETRJS Protocol", RFC 740, NIC 42423,
          22 November 1977.  Also in [17].

   [6]    Bressler, B., "Remote Job Entry Protocol",  RFC 407, NIC
          12112, 16 October 72.  Also in [17].

   [7]    Bressler, R., "Inter-Entity Communication -- An Experiment",
          RFC 441, NIC 13773, 19 January 1973.

   [8]    CCA, "Datacomputer Version 5/4 User Manual", Computer
          Corporation of America, August 1979.

   [9]    Cerf, V., "NCP Statistics", RFC 388, NIC 11360,