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Network Working Group J. Postel Request for Comments: 790 ISI September 1981 Obsoletes RFCs: 776, 770, 762, 758, 755, 750, 739, 604, 503, 433, 349 Obsoletes IENs: 127, 117, 93 ASSIGNED NUMBERS 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 Jon Postel. The assignment of numbers is also handled by Jon. If you are developing a protocol or application that will require the use of a link, socket, port, protocol, or network number please contact Jon to receive a number assignment. Jon Postel USC - Information Sciences Institute 4676 Admiralty Way Marina del Rey, California 90291 phone: (213) 822-1511 ARPANET mail: POSTEL@ISIF Most of the protocols mentioned here are documented in the RFC series of notes. The more prominent and more generally used are documented in the Protocol Handbook [17] prepared by the Network Information Center (NIC). Some of the items listed are undocumented. In all cases the name and mailbox of the responsible individual is indicated. In the lists that follow, a bracketed entry, e.g., [17,iii], at the right hand margin of the page indicates a reference for the listed protocol, where the number cites the document and the "iii" cites the person. Postel [Page 1] RFC 790 September 1981 Assigned Numbers Network Numbers ASSIGNED NETWORK NUMBERS This list of network numbers is used in the internet address [33]. The Internet Protocol (IP) uses a 32 bit address 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, or class a, of address has a 7-bit network number and a 24-bit local address. 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, or class b, of address has a 14-bit network number and a 16-bit local address. 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, or class c, of address has a 21-bit network number and a 8-bit local address. 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 One notation for internet host addresses commonly used 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. For example, the internet address of ISIF is 010.020.000.052. This notation will be used in the listing of assigned network Postel [Page 2] RFC 790 September 1981 Assigned Numbers Network Numbers 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 or rest field. Assigned Network Numbers Class A Networks Internet Address Name Network References ---------------- ---- ------- ---------- 000.rrr.rrr.rrr Reserved [JBP] 001.rrr.rrr.rrr BBN-PR BBN Packet Radio Network [DCA2] 002.rrr.rrr.rrr SF-PR-1 SF Packet Radio Network (1) [JEM] 003.rrr.rrr.rrr BBN-RCC BBN RCC Network [SGC] 004.rrr.rrr.rrr SATNET Atlantic Satellite Network [DM11] 005.rrr.rrr.rrr SILL-PR Ft. Sill Packet Radio Network[JEM] 006.rrr.rrr.rrr SF-PR-2 SF Packet Radio Network (2) [JEM] 007.rrr.rrr.rrr CHAOS MIT CHAOS Network [MOON] 008.rrr.rrr.rrr CLARKNET SATNET subnet for Clarksburg[DM11] 009.rrr.rrr.rrr BRAGG-PR Ft. Bragg Packet Radio Net [JEM] 010.rrr.rrr.rrr ARPANET ARPANET [17,1,VGC] 011.rrr.rrr.rrr UCLNET University College London [PK] 012.rrr.rrr.rrr CYCLADES CYCLADES [VGC] 013.rrr.rrr.rrr Unassigned [JBP] 014.rrr.rrr.rrr TELENET TELENET [VGC] 015.rrr.rrr.rrr EPSS British Post Office EPSS [PK] 016.rrr.rrr.rrr DATAPAC DATAPAC [VGC] 017.rrr.rrr.rrr TRANSPAC TRANSPAC [VGC] 018.rrr.rrr.rrr LCSNET MIT LCS Network [43,10,DDC2] 019.rrr.rrr.rrr TYMNET TYMNET [VGC] 020.rrr.rrr.rrr DC-PR D.C. Packet Radio Network [VGC] 021.rrr.rrr.rrr EDN DCEC EDN [EC5] 022.rrr.rrr.rrr DIALNET DIALNET [26,16,MRC] 023.rrr.rrr.rrr MITRE MITRE Cablenet [44,APS] 024.rrr.rrr.rrr BBN-LOCAL BBN Local Network [SGC] 025.rrr.rrr.rrr RSRE-PPSN RSRE / PPSN [BD2] 026.rrr.rrr.rrr AUTODIN-II AUTODIN II [EC5] 027.rrr.rrr.rrr NOSC-LCCN NOSC / LCCN [KTP] 028.rrr.rrr.rrr WIDEBAND Wide Band Satellite Network [CJW2] 029.rrr.rrr.rrr DCN-COMSAT COMSAT Dist. Comp. Network [DLM1] 030.rrr.rrr.rrr DCN-UCL UCL Dist. Comp. Network [PK] 031.rrr.rrr.rrr BBN-SAT-TEST BBN SATNET Test Network [DM11] 032.rrr.rrr.rrr UCL-CR1 UCL Cambridge Ring 1 [PK] 033.rrr.rrr.rrr UCL-CR2 UCL Cambridge Ring 2 [PK] 034.rrr.rrr.rrr MATNET Mobile Access Terminal Net [DM11] 035.rrr.rrr.rrr NULL UCL/RSRE Null Network [BD2] Postel [Page 3] RFC 790 September 1981 Assigned Numbers Network Numbers 036.rrr.rrr.rrr SU-NET Stanford University Ethernet [MRC] 037.rrr.rrr.rrr DECNET Digital Equipment Network [DRL] 038.rrr.rrr.rrr DECNET-TEST Test Digital Equipment Net [DRL] 039.rrr.rrr.rrr SRINET SRI Local Network [GEOF] 040.rrr.rrr.rrr CISLNET CISL Multics Network [CH2] 041.rrr.rrr.rrr BBN-LN-TEST BBN Local Network Testbed [KTP] 042.rrr.rrr.rrr S1NET LLL-S1-NET [EAK] 043.rrr.rrr.rrr INTELPOST COMSAT INTELPOST [DLM1] 044.rrr.rrr.rrr AMPRNET Amature Radio Experiment Net [HM] 044.rrr.rrr.rrr-126.rrr.rrr.rrr Unassigned [JBP] 127.rrr.rrr.rrr Reserved [JBP] Class B Networks Internet Address Name Network References ---------------- ---- ------- ---------- 128.000.rrr.rrr Reserved [JBP] 128.001.rrr.rrr-128.254.rrr.rrr Unassigned [JBP] 191.255.rrr.rrr Reserved [JBP] Class C Networks Internet Address Name Network References ---------------- ---- ------- ---------- 192.000.001.rrr Reserved [JBP] 192.000.001.rrr-223.255.254.rrr Unassigned [JBP] 223.255.255.rrr Reserved [JBP] Other Reserved Internet Addresses Internet Address Name Network References ---------------- ---- ------- ---------- 224.000.000.000-255.255.255.255 Reserved [JBP] Postel [Page 4] RFC 790 September 1981 Assigned Numbers Internet Version Numbers ASSIGNED INTERNET VERSION NUMBERS In the Internet Protocol (IP) [33] 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 Octal Version References ------- ----- ------- ---------- 0 0 Reserved [JBP] 1-3 1-3 Unassigned [JBP] 4 4 Internet Protocol [33,JBP] 5 5 ST Datagram Mode [20,JWF] 6-14 6-16 Unassigned [JBP] 15 17 Reserved [JBP] Postel [Page 5] RFC 790 September 1981 Assigned Numbers Internet Protocol Numbers ASSIGNED INTERNET PROTOCOL NUMBERS In the Internet Protocol (IP) [33] there is a field, called Protocol, to identify the the next level protocol. This is an 8 bit field. Assigned Internet Protocol Numbers Decimal Octal Protocol Numbers References ------- ----- ---------------- ---------- 0 0 Reserved [JBP] 1 1 ICMP [53,JBP] 2 2 Unassigned [JBP] 3 3 Gateway-to-Gateway [48,49,VMS] 4 4 CMCC Gateway Monitoring Message [18,19,DFP] 5 5 ST [20,JWF] 6 6 TCP [34,JBP] 7 7 UCL [PK] 8 10 Unassigned [JBP] 9 11 Secure [VGC] 10 12 BBN RCC Monitoring [VMS] 11 13 NVP [12,DC] 12 14 PUP [4,EAT3] 13 15 Pluribus [RDB2] 14 16 Telenet [RDB2] 15 17 XNET [25,JFH2] 16 20 Chaos [MOON] 17 21 User Datagram [42,JBP] 18 22 Multiplexing [13,JBP] 19 23 DCN [DLM1] 20 24 TAC Monitoring [55,RH6] 21-62 25-76 Unassigned [JBP] 63 77 any local network [JBP] 64 100 SATNET and Backroom EXPAK [DM11] 65 101 MIT Subnet Support [NC3] 66-68 102-104 Unassigned [JBP] 69 105 SATNET Monitoring [DM11] 70 106 Unassigned [JBP] 71 107 Internet Packet Core Utility [DM11] 72-75 110-113 Unassigned [JBP] 76 114 Backroom SATNET Monitoring [DM11] 77 115 Unassigned [JBP] 78 116 WIDEBAND Monitoring [DM11] 79 117 WIDEBAND EXPAK [DM11] 80-254 120-376 Unassigned [JBP] 255 377 Reserved [JBP] Postel [Page 6] RFC 790 September 1981 Assigned Numbers Port or Socket Numbers ASSIGNED PORT or SOCKET NUMBERS Ports are used in the TCP [34] and sockets are used in the AHHP [28,17] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers a service contact socket is defined. This list specifies the port or socket used by the server process as its contact socket. In the AHHP an Initial Connection Procedure ICP [39,17] is used between the user process and the server process to make the initial contact and establish the long term connections leaving the contact socket free to handle other callers. In the TCP no ICP is necessary since a port may engage in many simultaneous connections. To the extent possible these same port assignments are used with UDP [42]. 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 Postel [Page 7] RFC 790 September 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 SMTP [54,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 Message Generator Control [52,DFP] 53 65 AUTODIN II FTP [21,EC5] 55 67 ISI Graphics Language [3,RB6] 57 71 MTP [45,JBP] 59 73 New MIT Host Status [SWG] 61-63 75-77 Unassigned [JBP] Postel [Page 8] RFC 790 September 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 BBN RCC Accounting [DT] 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 9] RFC 790 September 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 10] RFC 790 September 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, 23 August 1972. [10] Clark, D., "Revision of DSP Specification", Local Network Note 9, Laboratory for Computer Science, MIT, 17 June 1977. [11] Clements, R., "FTPSRV -- Extensions for Tenex Paged Files", RFC 683, NIC 32251, 3 April 1975. Also in [17]. [12] Cohen, D., "Specifications for the Network Voice Protocol (NVP)", NSC Note 68, 29 January 1976. Also as USC/Information Sciences Institute RR-75-39, March 1976, and as RFC 741, NIC 42444, 22 November 1977. Also in [17]. [13] Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90, USC/Information Sciences Institute, May 1979. Postel [Page 11] RFC 790 September 1981 Assigned Numbers Documents [14] 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, 16 August 1976. [15] Crispin, M., "SUPDUP Protocol", RFC 734, NIC 41953, 7 October 1977. Also in [17]. [16] Crispin, M. and I. Zabala, "DIALNET Protocols", Stanford University Artificial Intelligence Laboratory, July 1978. [17] 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. [18] Flood Page, D., "Gateway Monitoring Protocol", IEN 131, February 1980. [19] Flood Page, D., "CMCC Performance Measurement Message Formats", IEN 157, September 1980. [20] Forgie, J., "ST - A Proposed Internet Stream Protocol", IEN 119, M.I.T. Lincoln Laboratory, September 1979. [21] Forsdick, H., and A. McKenzie, "FTP Functional Specification", Bolt Beranek and Newman, Report 4051, August 1979. [22] Harrenstien, K., J. Postel, "Time Server", IEN 142, April 1980. Also in [17]. [23] Harrenstien, K., "Name/Finger", RFC 742, NIC 42758, 30 December 1977. Also in [17]. [24] Harvey, B., "One More Try on the FTP", RFC 691, NIC 32700, 6 June 1975. [25] Haverty, J., "XNET Formats for Internet Protocol Version 4", IEN 158, October 1980. [26] McCarthy, J. and L. Earnest, "DIALNET", Stanford University Artificial Intelligence Laboratory, Undated. [27] McKenzie, A., "File Transfer Protocol", RFC 454, NIC 14333, 16 February 1973. Postel [Page 12] RFC 790 September 1981 Assigned Numbers Documents [28] McKenzie,A., "Host/Host Protocol for the ARPA Network", NIC 8246, January 1972. Also in [17]. [29] 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 24 December 1976. [30] O'Brien, M., "A Network Graphical Conferencing System", RAND Corporation, N-1250-ARPA, August 1979. [31] Postel, J., "Character Generator Process", RFC 429, NIC 13281, 12 December 1972. [32] Postel, J., "Discard Process", RFC 348, NIC 10427, 30 May 1972. [33] Postel, J., ed., "Internet Protocol - DARPA Internet Program Protocol Specification", RFC 791, USC/Information Sciences Institute, September 1981. [34] Postel, J., ed., "Transmission Control Protocol - DARPA Internet Program Protocol Specification", RFC 793, USC/Information Sciences Institute, September 1981. [35] Postel, J., "Echo Process", RFC 347, NIC 10426, 30 May 1972. [36] Postel, J., "File Transfer Protocol", RFC 765, IEN 149, June 1980. [37] Postel, J., "Internet Message Protocol", RFC 759, IEN 113, USC/Information Sciences Institute, August 1980. [38] Postel, J., "Name Server", IEN 116, USC/Information Sciences Institute, August 1979. [39] Postel, J., "Official Initial Connection Protocol", NIC 7101, 11 June 1971. Also in [17]. [40] Postel, J., "Telnet Protocol", RFC 318, NIC 9348, 3 April 1972. [41] Postel, J., "Telnet Protocol Specification", RFC 764, IEN 148, June 1980. [42] Postel, J., "User Datagram Protocol", RFC 768 USC/Information Sciences Institute, August 1980. Postel [Page 13] RFC 790 September 1981 Assigned Numbers Documents [43] Reed, D., "Protocols for the LCS Network", Local Network Note 3, Laboratory for Computer Science, MIT, 29 November 1976. [44] Skelton, A., S. Holmgren, and D. Wood, "The MITRE Cablenet Project", IEN 96, April 1979. [45] Sluizer, S., and J. Postel, "Mail Transfer Protocol", RFC 780, USC/Information Sciences Institute, May 1981. [46] Sproull, R., and E. Thomas. "A Networks Graphics Protocol", NIC 24308, 16 August 1974. Also in [17]. [47] Sollins, K., "The TFTP Protocol (revision 2)", RFC 783, MIT/LCS, June 1981. [48] Strazisar, V., "Gateway Routing: An Implementation Specification", IEN 30, Bolt Berenak and Newman, April 1979. [49] Strazisar, V., "How to Build a Gateway", IEN 109, Bolt Berenak and Newman, August 1979. [50] The High Level Protocol Group, "A Network Independent File Transfer Protocol", INWG Protocol Note 86, December 1977. [51] Thomas, R., "A Resource Sharing Executive for the ARPANET", AFIPS Conference Proceedings, 42:155-163, NCC, 1973. [52] Flood Page, D., "A Simple Message Generator", IEN 172, Bolt Berenak and Newman, March 1981. [53] Postel, J., "Internet Control Message Protocol - DARPA Internet Program Protocol Specification", RFC 792, USC/Information Sciences Institute, September 1981. [54] Postel, J., "Simple Mail Transfer Protocol", RFC 788, USC/Information Sciences Institute, September 1981. [55] Littauer, B., "A Host Monitoring Protocol"", IEN 197, Bolt Berenak and Newman, September 1981. Postel [Page 14] RFC 790 September 1981 Assigned Numbers People PEOPLE ------ [DCA2] Don Allen BBN Allen@BBND [CJB] Chris Bennett UCL UKSAT@ISIE [RB6] Richard Bisbey ISI Bisbey@ISIB [RTB] Bob Braden UCLA Braden@ISIA [RDB2] Robert Bressler BBN Bressler@BBNE [EC5] Ed Cain DCEC cain@EDN-Unix [VGC] Vint Cerf ARPA Cerf@ISIA [NC3] J. Noel Chiappa MIT JNC@MIT-XX [SGC] Steve Chipman BBN Chipman@BBNA [DDC2] David Clark MIT Clark@MIT-Multics [DC] Danny Cohen ISI Cohen@ISIB [MRC] Mark Crispin Stanford Admin.MRC@SU-SCORE [BD2] Brian Davies RSRE T45@ISIE [JAKE] Jake Feinler SRI Feinler@SRI-KL [DFP] David Flood Page BBN DFloodPage@BBNE [JWF] Jim Forgie LL Forgie@BBNC [SWG] Stu Galley MIT SWG@MIT-DMS [GEOF] Geoff Goodfellow SRI Geoff@DARCOM-KA [KLH] Ken Harrenstien MIT KLH@MIT-AI [JFH2] Jack Haverty BBN JHaverty@BBN-Unix [JGH] Jim Herman BBN Herman@BBNE [PLH] Peter Higginson UCL UKSAT@ISIE [RH6] Robert Hinden BBN Hinden@BBNE [CH2] Charles Hornig Honeywell Hornig@MIT-Multics [EAK] Earl Killian LLL EAK@MIT-MC [PK] Peter Kirstein UCL Kirstein@ISIA [DRL] David Lyons DEC Lyons@DEC-2136 [HM] Hank Magnuski --- --- [JEM] Jim Mathis SRI Mathis@SRI-KL [DM11] Dale McNeill BBN DMcNeill@BBNE [DLM1] David Mills COMSAT Mills@ISIE [MOON] David Moon MIT Moon@MIT-MC [EBM] Eliot Moss MIT EBM@MIT-XX [MO2] Michael O'Brien RAND OBrien@RAND-Unix [KTP] Ken Pogran BBN Pogran@BBND [JBP] Jon Postel ISI Postel@ISIF [JZS] Joanne Sattely CCA JZS@CCA [APS] Anita Skelton MITRE skelton@MITRE [KRS] Karen Sollins MIT Sollins@MIT-XX [VMS] Virginia Strazisar BBN Strazisar@BBNA [EAT3] Ed Taft XEROX Taft.PA@PARC [DT] Dan Tappan BBN Tappan@BBNG [RHT] Robert Thomas BBN Thomas@BBNA [AV] Al Vezza MIT AV@MIT-XX [CJW2] Cliff Weinstein LL cjw@LL-11 Postel [Page 15]