Network Working Group Jon Postel (UCLA-NMC) Request for Comments: 433 Nancy Neigus (BBN) NIC 13491 22 December 1972 Categories: Socket Numbers References: 349
Socket Number List
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 Assignment
0 - 63 Network Wide Standard Functions
64 - 127 Host Specific Functions
128 - 239 Reserved for Future Use
240 - 255 Any Experimental Function
Particular Assignments:
Socket Assignment
1 Telnet
3 File Transfer
5 Remote Job Entry
7 Echo
9 Discard
19 Character Generator [e.g. TTYTST]
65 Speech Data Base @ ll-tx-2 (74)
67 Datacomputer @ cca (31)
241 NCP Measurement
243 Survey Measurement
245 LINK
The specifications for the assigned functions can be found in the documents listed here:
Postel and Neigus [Page 1] RFC 433 Socket Number List 22 December 1972
Telnet RFC 318
File Transfer RFC 354 & RFC 385
Remote Job Entry RFC 407
Echo RFC 347
Discard RFC 348
Character Generator RFC 429
Speech Data Base SUR 37
Datacomputer [Murray @ CCA]
NCP Measurment RFC 388
Survey Data [Kampe @ NMC]
LINK [Bressler @ 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 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 Neigus
Bolt Beranek and Newman
50 Moulton Street
Cambridge, Mass. 02139
Phone: (617) 661-0100
NIC Ident = NJN
Postel and Neigus [Page 2] 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
2 SRI-ARC
1 Telnet
3 File Transfer
5 Echo
7 CPYNET
9 SYSTAT
13 DATE-TIME
3 UCSB
1 Telnet
5 UCSB RJS [not ARPANET standard]
7 Echo
9 Discard
4 UTAH
1 Telnet
3 File Transfer
5 Echo
7 CPYNET
9 SYSTAT
13 DATE-TIME
5 NCC
6 MIT-Multics
1 Telnet
9 Harvard
1 Telnet
3 Sorry File Transfer
10 LL-67
1 Telnet
11 SAIL
1 Telnet
3 File Transfer
12 ILL-ANTS
13 CASE
1 Telnet
3 File Transfer
5 Echo
7 CPYNET
9 SYSTAT
13 DATE-TIME
14 CMU
1 Telnet
3 File Transfer
15 ILLIAC-TENEX
1 Telnet
3 File Transfer
Postel and Neigus [Page 3] RFC 433 Socket Number List 22 December 1972
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
31 CCA-TENEX
1 Telnet
3 File Transfer
5 Echo
9 SYSTAT
11 NETSTAT
35 UCSD
1 Telnet
65 UCLA-CCN
1 Telnet
7 Echo
9 Discard
11 NETPJS [EBCDIC]
13 NETRJS [ASCII]
15 NETRJS [TTY]
66 SRI-AI
1 Telnet
3 DATE-TIME
5 Echo
7 CPYNET
9 SYSTAT
11 Sorry NETSTAT
69 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' TIP News
70 MIT-DMCG
1 Telnet
3 File Transfer
7 Network Status
9 Discard
74 LL-TX-2
1 Telnet
Postel and Neigus [Page 4] RFC 433 Socket Number List 22 December 1972
78 CMU-alt
1 Telnet
3 File Transfer
86 ISI-TENEX
1 Telnet
3 File Transfer
5 Echo
7 CPYNET
9 SYSTAT
13 DATE-TIME
133 BBN-TENEXB
1 Telnet
3 File Transfer
5 Echo
7 CPYNET
9 SYSTAT
13 DATE-TIME
15 NETSTAT
17 Oneliners
134 MIT-AI
1 Telnet
3 File Transfer
198 MIT-Mathlab
1 Telnet
3 File Transfer
Following hosts not tested
7 RAND 8 SDC-ADEPT 19 NBS-ANTS 138 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 [Page 5]