rfc870.txt
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Reynolds & Postel [Page 7]
Assigned Numbers RFC 870
Network Numbers
Network Totals
Assigned for the Internet
Class A B C Total
Research 10 27 1055 1092
Defense 2 10 9 21
Commercial 2 0 2 4
Total 14 37 1066 1117
Allocated for Internet and Other Uses
Class A B C Total
Research 10 27 1055 1092
Defense 2 10 9 21
Commercial 2 0 770 772
Total 14 37 1834 1885
Maximum Allowed
Class A B C Total
Research 8 1024 65536 66568
Defense 24 3072 458752 461848
Commercial 94 12286 1572862 1585242
Total 126 16382 2097150 2113658
Reynolds & Postel [Page 8]
Assigned Numbers RFC 870
Internet Version Numbers
ASSIGNED INTERNET VERSION NUMBERS
In the Internet Protocol (IP) [16,47] 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 [16,47,JBP]
5 5 ST Datagram Mode [18,JWF]
6-14 6-16 Unassigned [JBP]
15 17 Reserved [JBP]
ASSIGNED INTERNET PROTOCOL NUMBERS
In the Internet Protocol (IP) [16,47] 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 References
------- ----- ---------------- ----------
0 0 Reserved [JBP]
1 1 ICMP [16,40,JBP]
2 2 Unassigned [JBP]
3 3 Gateway-to-Gateway [24,MB]
4 4 Unassigned [JBP]
5 5 Stream (ST) [18,JWF]
6 6 Transmission Control (TCP) [16,48,JBP]
7 7 UCL [PK]
8 10 Exterior Gateway Protocol (EGP) [53,RH6]
9 11 Unassigned [JBP]
10 12 BBN RCC Monitoring [SGC]
11 13 NVP [12,SC3]
12 14 PUP [6,EAT3]
13-14 15-16 Unassigned [JBP]
15 17 Cross Net Debugger (XNET) [23,JFH2]
16 20 Chaos Stream [NC3]
17 21 User Datagram (UDP) [16,46,JBP]
18 22 Multiplexing [13,JBP]
19 23 DCN Measurement Subsystems [DLM1]
20 24 Host Monitoring (HMP) [28,RH6]
21 25 Packet Radio Measurement [ZSU]
Reynolds & Postel [Page 9]
Assigned Numbers RFC 870
Internet Protocol Numbers
22 26 XEROX NS IDP [62,LLG]
23 27 Trunk-1 [BML]
24 30 Trunk-2 [BML]
25 31 Leaf-1 [BML]
26 32 Leaf-2 [BML]
27-60 33-74 Unassigned [JBP]
61 75 any host internal protocol [JBP]
62 76 CFTP [19,HCF2]
63 77 any local network [JBP]
64 100 SATNET and Backroom EXPAK [DM11]
65 101 MIT Subnet Support [NC3]
66 102 MIT VAX Remote Disk Protocol [MBG]
67 103 Internet Pluribus Packet Core [DM11]
68 104 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]
Reynolds & Postel [Page 10]
Assigned Numbers RFC 870
Port Numbers
ASSIGNED PORT NUMBERS
Ports are used in the TCP [16,48] to name the ends of logical
connections which carry long term conversations. For the purpose of
providing services to unknown callers, a service contact port is
defined. This list specifies the port used by the server process as
its contact port. The contact port is sometimes called the
"well-known port".
To the extent possible, these same port assignments are used with the
UDP [16,46].
The assigned ports use a small portion of the possible port numbers.
The assigned ports have all except the low order eight bits cleared
to zero. The low order eight bits are specified here.
Port Assignments:
Decimal Octal Description References
------- ----- ----------- ----------
0 0 Reserved [JBP]
1-4 1-4 Unassigned [JBP]
5 5 Remote Job Entry [8,17,JBP]
7 7 Echo [38,JBP]
9 11 Discard [37,JBP]
11 13 Active Users [34,JBP]
13 15 Daytime [36,JBP]
15 17 Who is up or NETSTAT [JBP]
17 21 Quote of the Day [43,JBP]
19 23 Character Generator [35,JBP]
20 24 File Transfer (Default Data) [16,39,JBP]
21 25 File Transfer (Control) [16,39,JBP]
23 27 Telnet [50,JBP]
25 31 SMTP [16,45,JBP]
27 33 NSW User System FE [14,RHT]
29 35 MSG ICP [32,RHT]
31 37 MSG Authentication [32,RHT]
33 41 Unassigned [JBP]
35 43 Any Printer Server [JBP]
37 45 Time [49,JBP]
39 47 Unassigned [JBP]
41 51 Graphics [17,57,JBP]
42 52 Host Name Server [16,42,JBP]
43 53 NICNAME (WhoIs) [16,22,JAKE]
44 54 MPM FLAGS Protocol [JBP]
45 55 Message Processing Module (receive) [41,JBP]
46 56 MPM (default send) [41,JBP]
47 57 NI FTP [59,SK]
Reynolds & Postel [Page 11]
Assigned Numbers RFC 870
Port Numbers
49 61 Login Host Protocol [PXD]
51 63 IMP Logical Address Maintenance [30,AGM]
53 65 Domain Name Server [PM1]
55 67 ISI Graphics Language [5,RB6]
57 71 Any Private Terminal Access [JBP]
59 73 Any Private File Service [JBP]
61 75 NIMAIL [3,SK]
63 77 Unassigned [JBP]
65 101 Unassigned [JBP]
67 103 Datacomputer at CCA [10,JZS]
69 105 Trivial File Transfer [16,55,KRS]
71 107 NETRJS [7,17,RTB]
72 110 NETRJS [7,17,RTB]
73 111 NETRJS [7,17,RTB]
74 112 NETRJS [7,17,RTB]
75 113 Any Private Dial Out Service [JBP]
77 115 Any Private RJE Service [JBP]
79 117 Finger (Name) [17,20,KLH]
81 121 HOSTS2 Name Server [EAK1]
83 123 MIT ML Device [DPR]
85 125 MIT ML Device [DPR]
87 127 any terminal link [JBP]
89 131 SU/MIT Telnet Gateway [MRC]
91 133 MIT Dover Spooler [EBM]
93 135 Device Control Protocol [DCT]
95 137 SUPDUP [15,MRC]
97 141 Datacomputer Status [10,JZS]
99 143 Metagram Relay [GEOF]
101 145 NIC Host Name Server [16,21,JAKE]
103 147 Unassigned [JBP]
105 151 CSNET Mailbox Name Server (Program) [56,MHS1]
107 153 Remote Telnet Service [44,JBP]
109-129 155-201 Unassigned [JBP]
131 203 Datacomputer [10,JZS]
132-223 204-337 Reserved [JBP]
224-241 340-361 Unassigned [JBP]
243 363 Survey Measurement [4,AV]
245 365 LINK [9,RDB2]
247-255 367-377 Unassigned [JBP]
Reynolds & Postel [Page 12]
Assigned Numbers RFC 870
Autonomous System Numbers
ASSIGNED AUTONOMOUS SYSTEM NUMBERS
The Exterior Gateway Protocol (EGP) [53] specifies that groups of
gateways may form autonomous systems. The EGP provides a 16-bit
field for identifying such systems. The values of this field are
registered here.
Autonomous System Numbers:
Decimal Description References
------- ----------- ----------
0 Reserved [JBP]
1 The BBN Gateways [MB]
2 The DCN Gateways [DLM1]
3 The MIT Gateways [LM8]
4-65534 Unassigned [JBP]
65535 Reserved [JBP]
Reynolds & Postel [Page 13]
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