Protocol Numbers
2021-04-07
Assigned Internet Protocol Numbers
IESG Approval or Standards Action
In the Internet Protocol version 4 (IPv4) there is a field
called "Protocol" to identify the next level protocol. This is an 8
bit field. In Internet Protocol version 6 (IPv6) , this field
is called the "Next Header" field.
Values that are also IPv6 Extension Header Types should be listed in the
IPv6 Extension Header Types registry at .
0
HOPOPT
IPv6 Hop-by-Hop Option
Y
1
ICMP
Internet Control Message
2
IGMP
Internet Group Management
3
GGP
Gateway-to-Gateway
4
IPv4
IPv4 encapsulation
5
ST
Stream
6
TCP
Transmission Control
7
CBT
CBT
8
EGP
Exterior Gateway Protocol
9
IGP
any private interior gateway
(used by Cisco for their IGRP)
10
BBN-RCC-MON
BBN RCC Monitoring
11
NVP-II
Network Voice Protocol
12
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]
13
ARGUS (deprecated)
ARGUS
14
EMCON
EMCON
<mystery contact>
15
XNET
Cross Net Debugger
Haverty, J., "XNET Formats for Internet Protocol Version 4",
IEN 158, October 1980.
16
CHAOS
Chaos
17
UDP
User Datagram
18
MUX
Multiplexing
Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90,
USC/Information Sciences Institute, May 1979.
19
DCN-MEAS
DCN Measurement Subsystems
20
HMP
Host Monitoring
21
PRM
Packet Radio Measurement
22
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]
23
TRUNK-1
Trunk-1
24
TRUNK-2
Trunk-2
25
LEAF-1
Leaf-1
26
LEAF-2
Leaf-2
27
RDP
Reliable Data Protocol
28
IRTP
Internet Reliable Transaction
29
ISO-TP4
ISO Transport Protocol Class 4
<mystery contact>
30
NETBLT
Bulk Data Transfer Protocol
31
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.
32
MERIT-INP
MERIT Internodal Protocol
33
DCCP
Datagram Congestion Control Protocol
34
3PC
Third Party Connect Protocol
35
IDPR
Inter-Domain Policy Routing Protocol
36
XTP
XTP
37
DDP
Datagram Delivery Protocol
38
IDPR-CMTP
IDPR Control Message Transport Proto
39
TP++
TP++ Transport Protocol
40
IL
IL Transport Protocol
41
IPv6
IPv6 encapsulation
42
SDRP
Source Demand Routing Protocol
43
IPv6-Route
Routing Header for IPv6
Y
44
IPv6-Frag
Fragment Header for IPv6
Y
45
IDRP
Inter-Domain Routing Protocol
46
RSVP
Reservation Protocol
47
GRE
Generic Routing Encapsulation
48
DSR
Dynamic Source Routing Protocol
49
BNA
BNA
Gary Salamon
50
ESP
Encap Security Payload
Y
51
AH
Authentication Header
Y
52
I-NLSP
Integrated Net Layer Security TUBA
53
SWIPE (deprecated)
IP with Encryption
54
NARP
NBMA Address Resolution Protocol
55
MOBILE
IP Mobility
56
TLSP
Transport Layer Security Protocol
using Kryptonet key management
57
SKIP
SKIP
58
IPv6-ICMP
ICMP for IPv6
59
IPv6-NoNxt
No Next Header for IPv6
60
IPv6-Opts
Destination Options for IPv6
Y
61
any host internal protocol
62
CFTP
CFTP
Forsdick, H., "CFTP", Network Message, Bolt Beranek and
Newman, January 1982.
63
any local network
64
SAT-EXPAK
SATNET and Backroom EXPAK
65
KRYPTOLAN
Kryptolan
Paul Liu
66
RVD
MIT Remote Virtual Disk Protocol
67
IPPC
Internet Pluribus Packet Core
68
any distributed file system
69
SAT-MON
SATNET Monitoring
70
VISA
VISA Protocol
71
IPCV
Internet Packet Core Utility
72
CPNX
Computer Protocol Network Executive
David Mittnacht
73
CPHB
Computer Protocol Heart Beat
David Mittnacht
74
WSN
Wang Span Network
Victor Dafoulas
75
PVP
Packet Video Protocol
76
BR-SAT-MON
Backroom SATNET Monitoring
77
SUN-ND
SUN ND PROTOCOL-Temporary
78
WB-MON
WIDEBAND Monitoring
79
WB-EXPAK
WIDEBAND EXPAK
80
ISO-IP
ISO Internet Protocol
81
VMTP
VMTP
82
SECURE-VMTP
SECURE-VMTP
83
VINES
VINES
Brian Horn
84
TTP
Transaction Transport Protocol
84
IPTM
Internet Protocol Traffic Manager
85
NSFNET-IGP
NSFNET-IGP
86
DGP
Dissimilar Gateway Protocol
M/A-COM Government Systems, "Dissimilar Gateway Protocol
Specification, Draft Version", Contract no. CS901145,
November 16, 1987.
87
TCF
TCF
88
EIGRP
EIGRP
89
OSPFIGP
OSPFIGP
90
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
91
LARP
Locus Address Resolution Protocol
Brian Horn
92
MTP
Multicast Transport Protocol
93
AX.25
AX.25 Frames
94
IPIP
IP-within-IP Encapsulation Protocol
95
MICP (deprecated)
Mobile Internetworking Control Pro.
96
SCC-SP
Semaphore Communications Sec. Pro.
97
ETHERIP
Ethernet-within-IP Encapsulation
98
ENCAP
Encapsulation Header
99
any private encryption scheme
100
GMTP
GMTP
[RXB5]
101
IFMP
Ipsilon Flow Management Protocol
November 1995, 1997.
102
PNNI
PNNI over IP
103
PIM
Protocol Independent Multicast
104
ARIS
ARIS
105
SCPS
SCPS
106
QNX
QNX
107
A/N
Active Networks
108
IPComp
IP Payload Compression Protocol
109
SNP
Sitara Networks Protocol
110
Compaq-Peer
Compaq Peer Protocol
111
IPX-in-IP
IPX in IP
112
VRRP
Virtual Router Redundancy Protocol
113
PGM
PGM Reliable Transport Protocol
114
any 0-hop protocol
115
L2TP
Layer Two Tunneling Protocol
116
DDX
D-II Data Exchange (DDX)
117
IATP
Interactive Agent Transfer Protocol
118
STP
Schedule Transfer Protocol
119
SRP
SpectraLink Radio Protocol
120
UTI
UTI
121
SMP
Simple Message Protocol
122
SM (deprecated)
Simple Multicast Protocol
123
PTP
Performance Transparency Protocol
124
ISIS over IPv4
125
FIRE
126
CRTP
Combat Radio Transport Protocol
127
CRUDP
Combat Radio User Datagram
128
SSCOPMCE
129
IPLT
[Hollbach]
130
SPS
Secure Packet Shield
131
PIPE
Private IP Encapsulation within IP
132
SCTP
Stream Control Transmission Protocol
133
FC
Fibre Channel
134
RSVP-E2E-IGNORE
135
Mobility Header
Y
136
UDPLite
137
MPLS-in-IP
138
manet
MANET Protocols
139
HIP
Host Identity Protocol
Y
140
Shim6
Shim6 Protocol
Y
141
WESP
Wrapped Encapsulating Security Payload
142
ROHC
Robust Header Compression
143
Ethernet
Ethernet
144-252
Unassigned
253
Use for experimentation and testing
Y
254
Use for experimentation and testing
Y
255
Reserved
Barry Boehm
mailto:boehm&arpa.mil
Barry Howard
mailto:Howard&nmfecc.llnl.gov
Bernard Aboba
mailto:bernardaµsoft.com
1998-04
Bernhard Petri
mailto:bernhard.petri&siemens.com
2012-07-09
Bill McIntosh
mailto:BMcIntosh&fortresstech.com
Bob Braden
mailto:braden&isi.edu
1997-07
Bob Hinden
mailto:bob.hinden&gmail.com
2013-02-17
Brian Kantor
mailto:brian&ucsd.edu
CJ Lee
mailto:cj_lee&novell.com
1997-10
Charlie Perkins
mailto:perk&watson.ibm.com
1994-10
Christer Oberg
mailto:chg&bull.se
1994-10
Criag Partridge
mailto:craig&bbn.com
1999-08
Dave Cheriton
mailto:cheriton&pescadero.stanford.edu
Dave Presotto
mailto:presotto&plan9.att.com
1995-07
David Clark
mailto:ddc&lcs.mit.edu
David Mills
mailto:Mills&huey.udel.edu
Deborah Estrin
mailto:estrin&usc.edu
Dino Farinacci
mailto:dino&cisco.com
1996-03
Dirk Fromhein
mailto:df&watershed.com
Gene Tsudik
mailto:tsudik&usc.edu
Greg Chesson
mailto:Greg&sgi.com
Guillermo A. Loyola
mailto:LOYOLA&ibm.com
Hans-Werner Braun
mailto:HWB&mcr.umich.edu
Harry Forsdick
mailto:Forsdick&bbn.com
Howard Hart
mailto:hch&hybrid.com
Internet Assigned Numbers Authority
mailto:iana&iana.org
1995-06
J. Noel Chiappa
mailto:JNC&xx.lcs.mit.edu
Jack Haverty
mailto:jhaverty&oracle.com
Jean-Michel Pittet
mailto:jmp&gandalf.engr.sgi.com
1998-11
Jim Stevens
mailto:jasteven&rockwellcollins.com
2011-01-26
John Ioannidis
mailto:ji&tla.org
2015-01-06
John Moy
mailto:jmoy&proteon.com
John Murphy
mailto:john.m.murphy&mci.com
1998-10
John Worley
mailto:worley&milehigh.net
1998-06
Jon Crowcroft
mailto:jon&cs.ucl.ac.uk
1999-06
Jon Postel
mailto:postel&isi.edu
K. Robert Glenn
mailto:glenn&osi.ncsl.nist.gov
Kurt Waber
mailto:kurt.waber&swisscom.com
1999-08
Leif Ekblad
mailto:leif&rdos.net
2012-08-21
Manickam R. Sridhar
mailto:msridhar&sitaranetworks.com
1997-09
Mark Hamilton
mailto:mah&spectralink.com
1998-11
Marshall T. Rose
mailto:mrose&dbc.mtview.ca.us
Martha Steenstrup
mailto:MSteenst&bbn.com
Michael Greenwald
mailto:Greenwald&scrc-stony-brook.symbolics.com
Michael Hunter
mailto:mphunter&qnx.com
1997-07
Michael Welzl
mailto:michael&tk.uni-linz.ac.at
1999-08
Mike Little
mailto:little&macom4.arpa
Murali Rajagopal
mailto:murali&gadzoox.com
2000-05
Nancy Feldman
mailto:nkf&vnet.ibm.com
1997-01
Peter Lothberg
mailto:roll&stupi.se
1999-03
Randall R. Stewart
mailto:rrs&lakerest.net
2000-04
Robert Durst
mailto:durst&mitre.org
1997-03
Robert Sautter
mailto:rsautter&acdnj.itt.com
1999-08
Robert W. Scheifler
mailto:rscheifler&comcast.net
2015-10-06
Robert Woodburn
mailto:woody&cseic.saic.com
Ross Callon
mailto:rcallon&baynetworks.com
1995-12
Steve Casner
mailto:casner&isi.edu
Steve Chipman
mailto:Chipman&f.bbn.com
Steve Deering
mailto:deering&parc.xerox.com
1995-03
Steven Blumenthal
mailto:BLUMENTHAL&vax.bbn.com
Stuart A. Friedberg
mailto:stuart&cs.wisc.edu
Sue Hares
mailto:skh&merit.edu
Susie Armstrong
mailto:Armstrong.wbst128&xerox.com
Tom Markson
mailto:markson&osmosys.ingog.com
1995-09
Tony Ballardie
mailto:A.Ballardie&cs.ucl.ac.uk
Tony Li
mailto:tony.li&tony.li
2012-10-17
Tony Przygienda
mailto:prz&siara.com
1999-08
Tony Speakman
mailto:speakman&cisco.com
1998-01
Trudy Miller
mailto:Trudy&acc.com
Victor Volpe
mailto:vvolpe&smtp.microcom.com
1997-10
Wesley Craig
mailto:Wesley.Craig&terminator.cc.umich.edu
William Melohn
mailto:Melohn&sun.com
Zaw-Sing Su
mailto:ZSu&tsca.istc.sri.