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Network Working Group N. Neigus
Request for Comments: 503 J. Postel
NIC: 15747 13 April 1973
References: 349, 433


Socket Number List

This is a second pass at the specification of the socket numbers.
More sockets have been made available for experimental functions,
some new sockets have been assigned for network standard functions,
host specific functions and experimental functions, and the list of
available sockets for server hosts has been updated.

Following are the current 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 al
hosts (unless otherwise specified), the value in the 24 bit field is
zero, and the AEN is indicated here.

General Assignments:

Sockets Assignment

0 - 63 Network Wide Standard Functions
64 - 127 Host Specific Functions
128 - 223 Reserved for Future Use
224 - 255 Any Experimental Function


















Neigus, et. al. [Page 1]

RFC 503 Socket Number List 13 April 1973


Particular Assignments:

Socket Assignment

1 Telnet
3 File Transfer
5 Remote Job Entry
7 Echo
9 Discard
11 Systat or who-is-on function
13 Date-Time function
15 Netstat or who-is-up function
19 Character Generator [e.g. TTYTST]

65 Speech Data Base @ 11-tx-2 (74)
67
69 CPYNET
71 NETRJS [EBCDIC]
73 NETRJS [ASCII]
75 NETRJS [TTY]

241 NCP Measurement
243 Survey Measurement
245 LINK
247 RSEXEC
249 RSEXEC
251 RSEXEC

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

Telnet NIC 7104
File Transfer NIC 7104
Remote Job Entry NIC 7104
Echo RFC 347
Discard RFC 348
Character Generator RFC 429
Speech Data Base SUR 37
Datacomputer [Murray @ CCA]
NCP Measurement RFC 388
Survey Data [Kampa @ NMC]
LINK [Bressler @ BBN]
RSEXEC [Thomas @ BBN]

There are several hosts performing public services on sockets which
conflict with the above scheme. We hope we can resolve these
conflicts with a minimum of disruption.




Neigus, et. al. [Page 2]

RFC 503 Socket Number List 13 April 1973


The following is a tabulation of socket numbers together with the
services offered. This listing is presented as an aid to network
users. If you know of a socket function which has been left out or
an entry which 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 J. Neigus
Bolt Beranek and Newman
50 Moulton Street
Cambridge, Mass. 02138

Phone: (617) 661-0100

NIC Ident = NJN

We will be pleased to include socket/function information for other
than "official" sockets [e.g. Tip News].

1 UCLA-NMC

1 Telnet
3 File Transfer
241 NCP Measurement
243 Survey Data

2 SRI-ARC

1 Telnet
3 File Transfer
7 Echo
11 SYSTAT
13 DATE-TIME
69 CPYNET







Neigus, et. al. [Page 3]

RFC 503 Socket Number List 13 April 1973


3 UCSB

1 Telnet
5 UCSB RJS [not ARPANET standard]
7 Echo
9 Discard

1793, 1795, 1797, 1799, 1801, 2049 Graphics terminal sockets
x'701', '703', '705', '707', '709', '801' o'3401', '3403',
'3405', '3407', '3411', '4001'

4 UTAH

1 Telnet
3 File Transfer
5 Echo
7 CPYNET
9 SYSTAT
13 DATE-TIME

6 MIT-Multics

1 Telnet
3 File Transfer

8 SDC-Adept

1 Telnet

9 Harvard

1 Telnet
3 File Transfer

10 LL-67

1 Telnet

11 SAIL

1 Telnet
3 File Transfer









Neigus, et. al. [Page 4]

RFC 503 Socket Number List 13 April 1973


13 CASE

1 Telnet
3 File Transfer
7 Echo
11 SYSTAT
13 DATE-TIME
69 CPYNET

14 CMU

1 Telnet
3 File Transfer

15 ILLIAC-TENEX

1 Telnet
3 File Transfer
5 Echo
7 CPYNET
9 SYSTAT
13 DATE-TIME

16 NASA-AMES

1 Telnet
3 File Transfer
5 Sorry Remote Job Entry
7 Echo
9 Discard
241 NCP Measurement

23 USC-44

1 Telnet

31 CCA-TENEX
1 Telnet
3 File Transfer
7 Echo
11 SYSTAT
15 NETSTAT









Neigus, et. al. [Page 5]

RFC 503 Socket Number List 13 April 1973


35 UCSD

1 Telnet

65 UCLA-CCN

1 Telnet
3 File Transfer
7 Echo
9 Discard
71 NETRJS [EBCDIC]
73 NETRJS [ASCII]
75 NETRJS [TTY]

66 SRI-AI

1 Telnet
3 File Transfer
5 Echo
7 CPYNET
9 SYSTAT
11 Sorry NETSAT

69 BBN-TENEX (a)

1 Telnet
3 File Transfer
7 Echo
11 SYSTAT
13 DATE-TIME
15 NETSTAT
17 Oneliners
69 CPYNET
247 = x'F7' = o'367' TIP RSEXEC Facility

70 MIT-DMCG

1 Telnet
3 File Transfer
7 Network Status
9 Discard










Neigus, et. al. [Page 6]

RFC 503 Socket Number List 13 April 1973


74 LL-TX-2

1 Telnet

78 CMU-alt

1 Telnet
3 File Transfer

86 ISI-TENEX

1 Telnet
3 File Transfer
7 Echo
11 SYSTAT
13 DATE-TIME
69 CPYNET

133 BBN-TENEXB

1 Telnet
3 File Transfer
7 Echo
11 SYSTAT
13 DATE-TIME
15 NETSTAT
17 Oneliners
69 CPYNET

134 MIT-AI

1 Telnet
3 File Transfer

198 MIT-Mathlab

1 Telnet
3 File Transfer













Neigus, et. al. [Page 7]

RFC 503 Socket Number List 13 April 1973


User only hosts -- no server sockets

5 NCC
7 RAND
12 ILI-ANTS
19 NBS-ANTS
32 PARC-MAXC (currently)
138 LL-TSP
197 BBN-1D










































Neigus, et. al. [Page 8]