Information on Protocol

This is a list of protocols managed by IANA.

Update Date:Nov. 15, 2018

No Protocol number Name Protocol IPv6 Extension Header See also
1 HOPOPT IPv6 Hop-by-Hop Option Y [RFC8200]
2 ICMP Internet Control Message [RFC792]
3 IGMP Internet Group Management [RFC1112]
4 GGP Gateway-to-Gateway [RFC823]
5 IPv4 IPv4 encapsulation [RFC2003]
6 ST Stream [RFC1190][RFC1819]
7 TCP Transmission Control [RFC793]
8 CBT CBT [Tony_Ballardie]
9 EGP Exterior Gateway Protocol [RFC888][David_Mills]
10 IGP any private interior gateway (used by Cisco for their IGRP) [Internet_Assigned_Numbers_Authority]
11 BBN-RCC-MON BBN RCC Monitoring [Steve_Chipman]
12 NVP-II Network Voice Protocol [RFC741][Steve_Casner]
13 PUP PUP [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.][[XEROX]]
14 ARGUS (deprecated) ARGUS [Robert_W_Scheifler]
15 EMCON EMCON [<mystery contact>]
16 XNET Cross Net Debugger [Haverty, J., "XNET Formats for Internet Protocol Version 4", IEN 158, October 1980.][Jack_Haverty]
17 CHAOS Chaos [J_Noel_Chiappa]
18 UDP User Datagram [RFC768][Jon_Postel]
19 MUX Multiplexing [Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90, USC/Information Sciences Institute, May 1979.][Jon_Postel]
20 DCN-MEAS DCN Measurement Subsystems [David_Mills]
21 HMP Host Monitoring [RFC869][Bob_Hinden]
22 PRM Packet Radio Measurement [Zaw_Sing_Su]
23 XNS-IDP XEROX NS IDP ["The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification", AA-K759B-TK, Digital Equipment Corporation, Maynard, MA. Also as: "The Ethernet - A Local Area Network", Version 1.0, Digital Equipment Corporation, Intel Corporation, Xerox Corporation, September 1980. And: "The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specifications", Digital, Intel and Xerox, November 1982. And: XEROX, "The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification", X3T51/80-50, Xerox Corporation, Stamford, CT., October 1980.][[XEROX]]
24 TRUNK-1 Trunk-1 [Barry_Boehm]
25 TRUNK-2 Trunk-2 [Barry_Boehm]
26 LEAF-1 Leaf-1 [Barry_Boehm]
27 LEAF-2 Leaf-2 [Barry_Boehm]
28 RDP Reliable Data Protocol [RFC908][Bob_Hinden]
29 IRTP Internet Reliable Transaction [RFC938][Trudy_Miller]
30 ISO-TP4 ISO Transport Protocol Class 4 [RFC905][<mystery contact>]
31 NETBLT Bulk Data Transfer Protocol [RFC969][David_Clark]
32 MFE-NSP MFE Network Services Protocol [Shuttleworth, B., "A Documentary of MFENet, a National Computer Network", UCRL-52317, Lawrence Livermore Labs, Livermore, California, June 1977.][Barry_Howard]
33 MERIT-INP MERIT Internodal Protocol [Hans_Werner_Braun]
34 DCCP Datagram Congestion Control Protocol [RFC4340]
35 3PC Third Party Connect Protocol [Stuart_A_Friedberg]
36 IDPR Inter-Domain Policy Routing Protocol [Martha_Steenstrup]
37 XTP XTP [Greg_Chesson]
38 DDP Datagram Delivery Protocol [Wesley_Craig]
39 IDPR-CMTP IDPR Control Message Transport Proto [Martha_Steenstrup]
40 TP++ TP++ Transport Protocol [Dirk_Fromhein]
41 IL IL Transport Protocol [Dave_Presotto]
42 IPv6 IPv6 encapsulation [RFC2473]
43 SDRP Source Demand Routing Protocol [Deborah_Estrin]
44 IPv6-Route Routing Header for IPv6 Y [Steve_Deering]
45 IPv6-Frag Fragment Header for IPv6 Y [Steve_Deering]
46 IDRP Inter-Domain Routing Protocol [Sue_Hares]
47 RSVP Reservation Protocol [RFC2205][RFC3209][Bob_Braden]
48 GRE Generic Routing Encapsulation [RFC2784][Tony_Li]
49 DSR Dynamic Source Routing Protocol [RFC4728]
50 BNA BNA [Gary Salamon]
51 ESP Encap Security Payload Y [RFC4303]
52 AH Authentication Header Y [RFC4302]
53 I-NLSP Integrated Net Layer Security TUBA [K_Robert_Glenn]
54 SWIPE (deprecated) IP with Encryption [John_Ioannidis]
55 NARP NBMA Address Resolution Protocol [RFC1735]
56 MOBILE IP Mobility [Charlie_Perkins]
57 TLSP Transport Layer Security Protocol using Kryptonet key management [Christer_Oberg]
58 SKIP SKIP [Tom_Markson]
59 IPv6-ICMP ICMP for IPv6 [RFC8200]
60 IPv6-NoNxt No Next Header for IPv6 [RFC8200]
61 IPv6-Opts Destination Options for IPv6 Y [RFC8200]
62 any host internal protocol [Internet_Assigned_Numbers_Authority]
63 CFTP CFTP [Forsdick, H., "CFTP", Network Message, Bolt Beranek and Newman, January 1982.][Harry_Forsdick]
64 any local network [Internet_Assigned_Numbers_Authority]
65 SAT-EXPAK SATNET and Backroom EXPAK [Steven_Blumenthal]
66 KRYPTOLAN Kryptolan [Paul Liu]
67 RVD MIT Remote Virtual Disk Protocol [Michael_Greenwald]
68 IPPC Internet Pluribus Packet Core [Steven_Blumenthal]
69 any distributed file system [Internet_Assigned_Numbers_Authority]
70 SAT-MON SATNET Monitoring [Steven_Blumenthal]
71 VISA VISA Protocol [Gene_Tsudik]
72 IPCV Internet Packet Core Utility [Steven_Blumenthal]
73 CPNX Computer Protocol Network Executive [David Mittnacht]
74 CPHB Computer Protocol Heart Beat [David Mittnacht]
75 WSN Wang Span Network [Victor Dafoulas]
76 PVP Packet Video Protocol [Steve_Casner]
77 BR-SAT-MON Backroom SATNET Monitoring [Steven_Blumenthal]
78 SUN-ND SUN ND PROTOCOL-Temporary [William_Melohn]
79 WB-MON WIDEBAND Monitoring [Steven_Blumenthal]
80 WB-EXPAK WIDEBAND EXPAK [Steven_Blumenthal]
81 ISO-IP ISO Internet Protocol [Marshall_T_Rose]
82 VMTP VMTP [Dave_Cheriton]
83 SECURE-VMTP SECURE-VMTP [Dave_Cheriton]
84 VINES VINES [Brian Horn]
85 IPTM Internet Protocol Traffic Manager [Jim_Stevens]
86 NSFNET-IGP NSFNET-IGP [Hans_Werner_Braun]
87 DGP Dissimilar Gateway Protocol [M/A-COM Government Systems, "Dissimilar Gateway Protocol Specification, Draft Version", Contract no. CS901145, November 16, 1987.][Mike_Little]
88 TCF TCF [Guillermo_A_Loyola]
89 EIGRP EIGRP [RFC7868]
90 OSPFIGP OSPFIGP [RFC1583][RFC2328][RFC5340][John_Moy]
91 Sprite-RPC Sprite RPC Protocol [Welch, B., "The Sprite Remote Procedure Call System", Technical Report, UCB/Computer Science Dept., 86/302, University of California at Berkeley, June 1986.][Bruce Willins]
92 LARP Locus Address Resolution Protocol [Brian Horn]
93 MTP Multicast Transport Protocol [Susie_Armstrong]
94 AX.25 AX.25 Frames [Brian_Kantor]
95 IPIP IP-within-IP Encapsulation Protocol [John_Ioannidis]
96 MICP (deprecated) Mobile Internetworking Control Pro. [John_Ioannidis]
97 SCC-SP Semaphore Communications Sec. Pro. [Howard_Hart]
98 ETHERIP Ethernet-within-IP Encapsulation [RFC3378]
99 ENCAP Encapsulation Header [RFC1241][Robert_Woodburn]
100 any private encryption scheme [Internet_Assigned_Numbers_Authority]
101 GMTP GMTP [[RXB5]]
102 IFMP Ipsilon Flow Management Protocol [Bob_Hinden][November 1995, 1997.]
103 PNNI PNNI over IP [Ross_Callon]
104 PIM Protocol Independent Multicast [RFC7761][Dino_Farinacci]
105 ARIS ARIS [Nancy_Feldman]
106 SCPS SCPS [Robert_Durst]
107 QNX QNX [Michael_Hunter]
108 A/N Active Networks [Bob_Braden]
109 IPComp IP Payload Compression Protocol [RFC2393]
110 SNP Sitara Networks Protocol [Manickam_R_Sridhar]
111 Compaq-Peer Compaq Peer Protocol [Victor_Volpe]
112 IPX-in-IP IPX in IP [CJ_Lee]
113 VRRP Virtual Router Redundancy Protocol [RFC5798]
114 PGM PGM Reliable Transport Protocol [Tony_Speakman]
115 any 0-hop protocol [Internet_Assigned_Numbers_Authority]
116 L2TP Layer Two Tunneling Protocol [RFC3931][Bernard_Aboba]
117 DDX D-II Data Exchange (DDX) [John_Worley]
118 IATP Interactive Agent Transfer Protocol [John_Murphy]
119 STP Schedule Transfer Protocol [Jean_Michel_Pittet]
120 SRP SpectraLink Radio Protocol [Mark_Hamilton]
121 UTI UTI [Peter_Lothberg]
122 SMP Simple Message Protocol [Leif_Ekblad]
123 SM (deprecated) Simple Multicast Protocol [Jon_Crowcroft][draft-perlman-simple-multicast]
124 PTP Performance Transparency Protocol [Michael_Welzl]
125 ISIS over IPv4 [Tony_Przygienda]
126 FIRE [Criag_Partridge]
127 CRTP Combat Radio Transport Protocol [Robert_Sautter]
128 CRUDP Combat Radio User Datagram [Robert_Sautter]
129 SSCOPMCE [Kurt_Waber]
130 IPLT [[Hollbach]]
131 SPS Secure Packet Shield [Bill_McIntosh]
132 PIPE Private IP Encapsulation within IP [Bernhard_Petri]
133 SCTP Stream Control Transmission Protocol [Randall_R_Stewart]
134 FC Fibre Channel [Murali_Rajagopal][RFC6172]
135 RSVP-E2E-IGNORE [RFC3175]
136 Mobility Header Y [RFC6275]
137 UDPLite [RFC3828]
138 MPLS-in-IP [RFC4023]
139 manet MANET Protocols [RFC5498]
140 HIP Host Identity Protocol Y [RFC7401]
141 Shim6 Shim6 Protocol Y [RFC5533]
142 WESP Wrapped Encapsulating Security Payload [RFC5840]
143 ROHC Robust Header Compression [RFC5858]
144 Unassigned [Internet_Assigned_Numbers_Authority]
145 Unassigned [Internet_Assigned_Numbers_Authority]
146 Unassigned [Internet_Assigned_Numbers_Authority]
147 Unassigned [Internet_Assigned_Numbers_Authority]
148 Unassigned [Internet_Assigned_Numbers_Authority]
149 Unassigned [Internet_Assigned_Numbers_Authority]
150 Unassigned [Internet_Assigned_Numbers_Authority]
151 Unassigned [Internet_Assigned_Numbers_Authority]
152 Unassigned [Internet_Assigned_Numbers_Authority]
153 Unassigned [Internet_Assigned_Numbers_Authority]
154 Unassigned [Internet_Assigned_Numbers_Authority]
155 Unassigned [Internet_Assigned_Numbers_Authority]
156 Unassigned [Internet_Assigned_Numbers_Authority]
157 Unassigned [Internet_Assigned_Numbers_Authority]
158 Unassigned [Internet_Assigned_Numbers_Authority]
159 Unassigned [Internet_Assigned_Numbers_Authority]
160 Unassigned [Internet_Assigned_Numbers_Authority]
161 Unassigned [Internet_Assigned_Numbers_Authority]
162 Unassigned [Internet_Assigned_Numbers_Authority]
163 Unassigned [Internet_Assigned_Numbers_Authority]
164 Unassigned [Internet_Assigned_Numbers_Authority]
165 Unassigned [Internet_Assigned_Numbers_Authority]
166 Unassigned [Internet_Assigned_Numbers_Authority]
167 Unassigned [Internet_Assigned_Numbers_Authority]
168 Unassigned [Internet_Assigned_Numbers_Authority]
169 Unassigned [Internet_Assigned_Numbers_Authority]
170 Unassigned [Internet_Assigned_Numbers_Authority]
171 Unassigned [Internet_Assigned_Numbers_Authority]
172 Unassigned [Internet_Assigned_Numbers_Authority]
173 Unassigned [Internet_Assigned_Numbers_Authority]
174 Unassigned [Internet_Assigned_Numbers_Authority]
175 Unassigned [Internet_Assigned_Numbers_Authority]
176 Unassigned [Internet_Assigned_Numbers_Authority]
177 Unassigned [Internet_Assigned_Numbers_Authority]
178 Unassigned [Internet_Assigned_Numbers_Authority]
179 Unassigned [Internet_Assigned_Numbers_Authority]
180 Unassigned [Internet_Assigned_Numbers_Authority]
181 Unassigned [Internet_Assigned_Numbers_Authority]
182 Unassigned [Internet_Assigned_Numbers_Authority]
183 Unassigned [Internet_Assigned_Numbers_Authority]
184 Unassigned [Internet_Assigned_Numbers_Authority]
185 Unassigned [Internet_Assigned_Numbers_Authority]
186 Unassigned [Internet_Assigned_Numbers_Authority]
187 Unassigned [Internet_Assigned_Numbers_Authority]
188 Unassigned [Internet_Assigned_Numbers_Authority]
189 Unassigned [Internet_Assigned_Numbers_Authority]
190 Unassigned [Internet_Assigned_Numbers_Authority]
191 Unassigned [Internet_Assigned_Numbers_Authority]
192 Unassigned [Internet_Assigned_Numbers_Authority]
193 Unassigned [Internet_Assigned_Numbers_Authority]
194 Unassigned [Internet_Assigned_Numbers_Authority]
195 Unassigned [Internet_Assigned_Numbers_Authority]
196 Unassigned [Internet_Assigned_Numbers_Authority]
197 Unassigned [Internet_Assigned_Numbers_Authority]
198 Unassigned [Internet_Assigned_Numbers_Authority]
199 Unassigned [Internet_Assigned_Numbers_Authority]
200 Unassigned [Internet_Assigned_Numbers_Authority]
201 Unassigned [Internet_Assigned_Numbers_Authority]
202 Unassigned [Internet_Assigned_Numbers_Authority]
203 Unassigned [Internet_Assigned_Numbers_Authority]
204 Unassigned [Internet_Assigned_Numbers_Authority]
205 Unassigned [Internet_Assigned_Numbers_Authority]
206 Unassigned [Internet_Assigned_Numbers_Authority]
207 Unassigned [Internet_Assigned_Numbers_Authority]
208 Unassigned [Internet_Assigned_Numbers_Authority]
209 Unassigned [Internet_Assigned_Numbers_Authority]
210 Unassigned [Internet_Assigned_Numbers_Authority]
211 Unassigned [Internet_Assigned_Numbers_Authority]
212 Unassigned [Internet_Assigned_Numbers_Authority]
213 Unassigned [Internet_Assigned_Numbers_Authority]
214 Unassigned [Internet_Assigned_Numbers_Authority]
215 Unassigned [Internet_Assigned_Numbers_Authority]
216 Unassigned [Internet_Assigned_Numbers_Authority]
217 Unassigned [Internet_Assigned_Numbers_Authority]
218 Unassigned [Internet_Assigned_Numbers_Authority]
219 Unassigned [Internet_Assigned_Numbers_Authority]
220 Unassigned [Internet_Assigned_Numbers_Authority]
221 Unassigned [Internet_Assigned_Numbers_Authority]
222 Unassigned [Internet_Assigned_Numbers_Authority]
223 Unassigned [Internet_Assigned_Numbers_Authority]
224 Unassigned [Internet_Assigned_Numbers_Authority]
225 Unassigned [Internet_Assigned_Numbers_Authority]
226 Unassigned [Internet_Assigned_Numbers_Authority]
227 Unassigned [Internet_Assigned_Numbers_Authority]
228 Unassigned [Internet_Assigned_Numbers_Authority]
229 Unassigned [Internet_Assigned_Numbers_Authority]
230 Unassigned [Internet_Assigned_Numbers_Authority]
231 Unassigned [Internet_Assigned_Numbers_Authority]
232 Unassigned [Internet_Assigned_Numbers_Authority]
233 Unassigned [Internet_Assigned_Numbers_Authority]
234 Unassigned [Internet_Assigned_Numbers_Authority]
235 Unassigned [Internet_Assigned_Numbers_Authority]
236 Unassigned [Internet_Assigned_Numbers_Authority]
237 Unassigned [Internet_Assigned_Numbers_Authority]
238 Unassigned [Internet_Assigned_Numbers_Authority]
239 Unassigned [Internet_Assigned_Numbers_Authority]
240 Unassigned [Internet_Assigned_Numbers_Authority]
241 Unassigned [Internet_Assigned_Numbers_Authority]
242 Unassigned [Internet_Assigned_Numbers_Authority]
243 Unassigned [Internet_Assigned_Numbers_Authority]
244 Unassigned [Internet_Assigned_Numbers_Authority]
245 Unassigned [Internet_Assigned_Numbers_Authority]
246 Unassigned [Internet_Assigned_Numbers_Authority]
247 Unassigned [Internet_Assigned_Numbers_Authority]
248 Unassigned [Internet_Assigned_Numbers_Authority]
249 Unassigned [Internet_Assigned_Numbers_Authority]
250 Unassigned [Internet_Assigned_Numbers_Authority]
251 Unassigned [Internet_Assigned_Numbers_Authority]
252 Unassigned [Internet_Assigned_Numbers_Authority]
253 Use for experimentation and testing Y [RFC3692]
254 Use for experimentation and testing Y [RFC3692]
255 Reserved [Internet_Assigned_Numbers_Authority]