List of IP protocol numbers

This is a list of the IP protocol numbers found in the field Protocol of the IPv4 header and the Next Header field of the IPv6 header. It is an identifier for the encapsulated protocol and determines the layout of the data that immediately follows the header. Both fields are eight bits wide. Protocol numbers are maintained and published by the Internet Assigned Numbers Authority (IANA).[1]

Hex Protocol NumberKeywordProtocolReferences/RFC
0x00 0 HOPOPT IPv6 Hop-by-Hop Option RFC 8200
0x01 1 ICMP Internet Control Message Protocol RFC 792
0x02 2 IGMP Internet Group Management Protocol RFC 1112
0x03 3 GGP Gateway-to-Gateway Protocol RFC 823
0x04 4 IP-in-IP IP in IP (encapsulation) RFC 2003
0x05 5 ST Internet Stream Protocol RFC 1190, RFC 1819
0x06 6 TCP Transmission Control Protocol RFC 793
0x07 7 CBT Core-based trees RFC 2189
0x08 8 EGP Exterior Gateway Protocol RFC 888
0x09 9 IGP Interior Gateway Protocol (any private interior gateway, for example Cisco's IGRP)
0x0A 10 BBN-RCC-MON BBN RCC Monitoring
0x0B 11 NVP-II Network Voice Protocol RFC 741
0x0C 12 PUP Xerox PUP
0x0D 13 ARGUS ARGUS
0x0E 14 EMCON EMCON
0x0F 15 XNET Cross Net Debugger IEN 158[2]
0x10 16 CHAOS Chaos
0x11 17 UDP User Datagram Protocol RFC 768
0x12 18 MUX Multiplexing IEN 90[3]
0x13 19 DCN-MEAS DCN Measurement Subsystems
0x14 20 HMP Host Monitoring Protocol RFC 869
0x15 21 PRM Packet Radio Measurement
0x16 22 XNS-IDP XEROX NS IDP
0x17 23 TRUNK-1 Trunk-1
0x18 24 TRUNK-2 Trunk-2
0x19 25 LEAF-1 Leaf-1
0x1A 26 LEAF-2 Leaf-2
0x1B 27 RDP Reliable Data Protocol RFC 908
0x1C 28 IRTP Internet Reliable Transaction Protocol RFC 938
0x1D 29 ISO-TP4 ISO Transport Protocol Class 4 RFC 905
0x1E 30 NETBLT Bulk Data Transfer Protocol RFC 998
0x1F 31 MFE-NSP MFE Network Services Protocol
0x20 32 MERIT-INP MERIT Internodal Protocol
0x21 33 DCCP Datagram Congestion Control Protocol RFC 4340
0x22 34 3PC Third Party Connect Protocol
0x23 35 IDPR Inter-Domain Policy Routing Protocol RFC 1479
0x24 36 XTP Xpress Transport Protocol
0x25 37 DDP Datagram Delivery Protocol
0x26 38 IDPR-CMTP IDPR Control Message Transport Protocol
0x27 39 TP++ TP++ Transport Protocol
0x28 40 IL IL Transport Protocol
0x29 41 IPv6 IPv6 Encapsulation (6to4 and 6in4) RFC 2473
0x2A 42 SDRP Source Demand Routing Protocol RFC 1940
0x2B 43 IPv6-Route Routing Header for IPv6 RFC 8200
0x2C 44 IPv6-Frag Fragment Header for IPv6 RFC 8200
0x2D 45 IDRP Inter-Domain Routing Protocol
0x2E 46 RSVP Resource Reservation Protocol RFC 2205
0x2F 47 GRE Generic Routing Encapsulation RFC 2784, RFC 2890
0x30 48 DSR Dynamic Source Routing Protocol RFC 4728
0x31 49 BNA Burroughs Network Architecture
0x32 50 ESP Encapsulating Security Payload RFC 4303
0x33 51 AH Authentication Header RFC 4302
0x34 52 I-NLSP Integrated Net Layer Security Protocol TUBA
0x35 53 SwIPe SwIPe RFC 5237
0x36 54 NARP NBMA Address Resolution Protocol RFC 1735
0x37 55 MOBILE IP Mobility (Min Encap) RFC 2004
0x38 56 TLSP Transport Layer Security Protocol (using Kryptonet key management)
0x39 57 SKIP Simple Key-Management for Internet Protocol RFC 2356
0x3A 58 IPv6-ICMP ICMP for IPv6 RFC 4443, RFC 4884
0x3B 59 IPv6-NoNxt No Next Header for IPv6 RFC 8200
0x3C 60 IPv6-Opts Destination Options for IPv6 RFC 8200
0x3D 61 Any host internal protocol
0x3E 62 CFTP CFTP
0x3F 63 Any local network
0x40 64 SAT-EXPAK SATNET and Backroom EXPAK
0x41 65 KRYPTOLAN Kryptolan
0x42 66 RVD MIT Remote Virtual Disk Protocol
0x43 67 IPPC Internet Pluribus Packet Core
0x44 68 Any distributed file system
0x45 69 SAT-MON SATNET Monitoring
0x46 70 VISA VISA Protocol
0x47 71 IPCU Internet Packet Core Utility
0x48 72 CPNX Computer Protocol Network Executive
0x49 73 CPHB Computer Protocol Heart Beat
0x4A 74 WSN Wang Span Network
0x4B 75 PVP Packet Video Protocol
0x4C 76 BR-SAT-MON Backroom SATNET Monitoring
0x4D 77 SUN-ND SUN ND PROTOCOL-Temporary
0x4E 78 WB-MON WIDEBAND Monitoring
0x4F 79 WB-EXPAK WIDEBAND EXPAK
0x50 80 ISO-IP International Organization for Standardization Internet Protocol
0x51 81 VMTP Versatile Message Transaction Protocol RFC 1045
0x52 82 SECURE-VMTP Secure Versatile Message Transaction Protocol RFC 1045
0x53 83 VINES VINES
0x54 84 TTP TTP
0x54 84 IPTM Internet Protocol Traffic Manager
0x55 85 NSFNET-IGP NSFNET-IGP
0x56 86 DGP Dissimilar Gateway Protocol
0x57 87 TCF TCF
0x58 88 EIGRP EIGRP Informational RFC 7868
0x59 89 OSPF Open Shortest Path First RFC 2328
0x5A 90 Sprite-RPC Sprite RPC Protocol
0x5B 91 LARP Locus Address Resolution Protocol
0x5C 92 MTP Multicast Transport Protocol
0x5D 93 AX.25 AX.25
0x5E 94 OS KA9Q NOS compatible IP over IP tunneling
0x5F 95 MICP Mobile Internetworking Control Protocol
0x60 96 SCC-SP Semaphore Communications Sec. Pro
0x61 97 ETHERIP Ethernet-within-IP Encapsulation RFC 3378
0x62 98 ENCAP Encapsulation Header RFC 1241
0x63 99 Any private encryption scheme
0x64 100 GMTP GMTP
0x65 101 IFMP Ipsilon Flow Management Protocol
0x66 102 PNNI PNNI over IP
0x67 103 PIM Protocol Independent Multicast
0x68 104 ARIS IBM's ARIS (Aggregate Route IP Switching) Protocol
0x69 105 SCPS SCPS (Space Communications Protocol Standards) SCPS-TP[4]
0x6A 106 QNX QNX
0x6B 107 A/N Active Networks
0x6C 108 IPComp IP Payload Compression Protocol RFC 3173
0x6D 109 SNP Sitara Networks Protocol
0x6E 110 Compaq-Peer Compaq Peer Protocol
0x6F 111 IPX-in-IP IPX in IP
0x70 112 VRRP Virtual Router Redundancy Protocol, Common Address Redundancy Protocol (not IANA assigned) RFC 5798
0x71 113 PGM PGM Reliable Transport Protocol RFC 3208
0x72 114 Any 0-hop protocol
0x73 115 L2TP Layer Two Tunneling Protocol Version 3 RFC 3931
0x74 116 DDX D-II Data Exchange (DDX)
0x75 117 IATP Interactive Agent Transfer Protocol
0x76 118 STP Schedule Transfer Protocol
0x77 119 SRP SpectraLink Radio Protocol
0x78 120 UTI Universal Transport Interface Protocol
0x79 121 SMP Simple Message Protocol
0x7A 122 SM Simple Multicast Protocol draft-perlman-simple-multicast-03
0x7B 123 PTP Performance Transparency Protocol
0x7C 124 IS-IS over IPv4 Intermediate System to Intermediate System (IS-IS) Protocol over IPv4 RFC 1142 and RFC 1195
0x7D 125 FIRE Flexible Intra-AS Routing Environment
0x7E 126 CRTP Combat Radio Transport Protocol
0x7F 127 CRUDP Combat Radio User Datagram
0x80 128 SSCOPMCE Service-Specific Connection-Oriented Protocol in a Multilink and Connectionless Environment ITU-T Q.2111 (1999)
0x81 129 IPLT
0x82 130 SPS Secure Packet Shield
0x83 131 PIPE Private IP Encapsulation within IP Expired I-D draft-petri-mobileip-pipe-00.txt
0x84 132 SCTP Stream Control Transmission Protocol RFC 4960
0x85 133 FC Fibre Channel
0x86 134 RSVP-E2E-IGNORE Reservation Protocol (RSVP) End-to-End Ignore RFC 3175
0x87 135 Mobility Header Mobility Extension Header for IPv6 RFC 6275
0x88 136 UDPLite Lightweight User Datagram Protocol RFC 3828
0x89 137 MPLS-in-IP Multiprotocol Label Switching Encapsulated in IP RFC 4023, RFC 5332
0x8A 138 manet MANET Protocols RFC 5498
0x8B 139 HIP Host Identity Protocol RFC 5201
0x8C 140 Shim6 Site Multihoming by IPv6 Intermediation RFC 5533
0x8D 141 WESP Wrapped Encapsulating Security Payload RFC 5840
0x8E 142 ROHC Robust Header Compression RFC 5856
0x8F 143 Ethernet Segment Routing over IPv6 RFC 8986
0x90 144 AGGFRAG AGGFRAG Encapsulation Payload for ESP RFC 9347
0x91 145 NSH Network Service Header draft-ietf-spring-nsh-sr
0x92-0xFC 146-252 Unassigned
0xFD-0xFE 253-254 Use for experimentation and testing RFC 3692
0xFF 255 Reserved

See also

References
  1. "Protocol Numbers". Internet Assigned Numbers Authority (IANA). 2016-06-22.
  2. IEN 158.
  3. IEN 90.
  4. "SPACE COMMUNICATIONS PROTOCOL SPECIFICATION (SCPS)—TRANSPORT PROTOCOL (SCPS-TP)" (PDF). Consultative Committee for Space Data Systems. Archived from the original (PDF) on 2007-09-27. Retrieved 2006-05-27.
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