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Network Working Group Request for Comments: 433 NIC 13491 Categories: Socket Numbers References: 349 Socket Number List

Jon Postel (UCLA-NMC) Nancy Neigus (BBN) 22 December 1972

The czar of socket numbers [Jon Postel] has established the following assignments for socket numbers used for public functions. Note that a socket number is a 40 bit quantity, the first 8 bits being the host specification, the next 24 bits being site specific, and the last 8 bits being user specified - these last 8 bits are called the AEN [it stands for, cleverly enough, Another Eightbit Number]. For the assignments here the value in the host field ranges across all hosts (unless otherwise specified), the value in the 24 bit field is zero, and the AEN is indicated here. General Assignments: Sockets 064 128 240 63 - 127 - 239 - 255 Assignment Network Wide Standard Functions Host Specific Functions Reserved for Future Use Any Experimental Function

Particular Assignments: Socket 1 3 5 7 9 19 65 67 241 243 245 Assignment Telnet File Transfer Remote Job Entry Echo Discard Character Generator [e.g. TTYTST] Speech Data Base @ ll-tx-2 (74) Datacomputer @ cca (31) NCP Measurement Survey Measurement LINK

The specifications for the assigned functions can be found in the documents listed here:

Postel and Neigus

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RFC 433

Socket Number List

22 December 1972

Telnet File Transfer Remote Job Entry Echo Discard Character Generator Speech Data Base Datacomputer NCP Measurment Survey Data LINK

RFC 318 RFC 354 & RFC 407 RFC 347 RFC 348 RFC 429 SUR 37 [Murray @ RFC 388 [Kampe @ [Bressler

RFC 385

CCA] NMC] @ BBN]

It has come to our attention that there are several hosts performing useful public services on sockets which conflict with the above scheme. We hope we can resolve this problem with a minimum of disruption. The following is a services offered. users. If you know or an entry which tabulation of socket numbers together with the This listing is presented as an aid to network of a socket/function which has been left out should be corrected or deleted please contact: Jon Postel 3804 Boelter Hall Computer Science Department University of California Los Angeles, CA. 90024 Phone: (213) 825-2368 NIC Ident = JBP or Nancy Neigus Bolt Beranek and Newman 50 Moulton Street Cambridge, Mass. 02139 Phone: (617) 661-0100 NIC Ident = NJN

Postel and Neigus

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RFC 433

Socket Number List

22 December 1972

We will be pleased to include socket/function information for other than "offical" sockets [e.g Tip News]. 1 UCLA-NMC 1 Telnet 241 NCP Measurement 243 Survey Data SRI-ARC 1 Telnet 3 File Transfer 5 Echo 7 CPYNET 9 SYSTAT 13 DATE-TIME UCSB 1 Telnet 5 UCSB RJS [not ARPANET standard] 7 Echo 9 Discard UTAH 1 Telnet 3 File Transfer 5 Echo 7 CPYNET 9 SYSTAT 13 DATE-TIME NCC MIT-Multics 1 Telnet Harvard 1 Telnet 3 Sorry File Transfer LL-67 1 Telnet SAIL 1 Telnet 3 File Transfer ILL-ANTS CASE 1 Telnet 3 File Transfer 5 Echo 7 CPYNET 9 SYSTAT 13 DATE-TIME CMU 1 Telnet 3 File Transfer ILLIAC-TENEX 1 Telnet 3 File Transfer

2

3

4

5 6 9

10 11

12 13

14

15

Postel and Neigus

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RFC 433

Socket Number List

22 December 1972

5 7 9 13 16

23 31

35 65

66

69

70

74

Echo CPYNET SYSTAT DATE-TIME NASA-AMES 1 Telnet 3 File Transfer 5 Sorry Remote Job Entry 7 Echo 9 Discard 241 NCP Measurement USC-44 CCA-TENEX 1 Telnet 3 File Transfer 5 Echo 9 SYSTAT 11 NETSTAT UCSD 1 Telnet UCLA-CCN 1 Telnet 7 Echo 9 Discard 11 NETPJS [EBCDIC] 13 NETRJS [ASCII] 15 NETRJS [TTY] SRI-AI 1 Telnet 3 DATE-TIME 5 Echo 7 CPYNET 9 SYSTAT 11 Sorry NETSTAT BBN-TENEX (a) 1 Telnet 3 File Transfer 5 Echo 7 CPYNET 9 SYSTAT 13 DATE-TIME 15 NETSTAT 17 Oneliners 3604505 = x'370019' = o'15600031' MIT-DMCG 1 Telnet 3 File Transfer 7 Network Status 9 Discard LL-TX-2 1 Telnet

TIP News

Postel and Neigus

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RFC 433

Socket Number List

22 December 1972

78 1 3 86 1 3 5 7 9 13 133 1 3 5 7 9 13 15 17 134 1 3 198 1 3

CMU-alt Telnet File Transfer ISI-TENEX Telnet File Transfer Echo CPYNET SYSTAT DATE-TIME BBN-TENEXB Telnet File Transfer Echo CPYNET SYSTAT DATE-TIME NETSTAT Oneliners MIT-AI Telnet File Transfer MIT-Mathlab Telnet File Transfer

Following hosts not tested 7 8 19 138 RAND SDC-ADEPT NBS-ANTS LL-TSP

[ This RFC was put into machine readable form for entry ] [ into the online RFC archives by James Carlson 11/98 ]

Postel and Neigus

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