Editing List of IP protocol numbers (section)

{{short description|none}}
This is a list of the '''IP protocol numbers''' found in the 8-bit ''Protocol'' field of the [[IPv4 header]] and the 8-bit ''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. Because both fields are eight [[bit]]s wide, the possible values are limited to the 256 values from 0 (0x00) to 255 (0xFF), of which just over half had been allocated {{as of|2025|lc=on|post=.}}

Protocol numbers are maintained and published by the [[Internet Assigned Numbers Authority]] (IANA).<ref name="iana">{{cite web|title=Protocol Numbers|url=https://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml|publisher=Internet Assigned Numbers Authority (IANA)|date=2016-06-22}}</ref>

{| class="wikitable"
|-
! class="nomobile" | Hex
! Protocol Number !! Keyword !! Protocol !! References/[[Request for Comments|RFC]]
|-
| style="text-align:right" class="nomobile" | 0x00
| style="text-align:right" | 0
| HOPOPT
| [[IPv6 Hop-by-Hop Option]]
| {{IETF RFC|8200|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x01
| style="text-align:right" | 1
| ICMP
| [[Internet Control Message Protocol]]
| {{IETF RFC|792|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x02
| style="text-align:right" | 2
| IGMP
| [[Internet Group Management Protocol]]
| {{IETF RFC|1112|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x03
| style="text-align:right" | 3
| GGP
| [[Gateway-to-Gateway Protocol]]
| {{IETF RFC|823|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x04
| style="text-align:right" | 4
| IP-in-IP
| [[IP in IP]] (encapsulation)
| {{IETF RFC|2003|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x05
| style="text-align:right" | 5
| ST
| [[Internet Stream Protocol]]
| {{IETF RFC|1190|link=no}}, {{IETF RFC|1819|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x06
| style="text-align:right" | 6
| TCP
| [[Transmission Control Protocol]]
| {{IETF RFC|793|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x07
| style="text-align:right" | 7
| CBT
| [[Core-based trees]]
| {{IETF RFC|2189|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x08
| style="text-align:right" | 8
| EGP
| [[Exterior Gateway Protocol]]
| {{IETF RFC|888|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x09
| style="text-align:right" | 9
| IGP
| [[Interior gateway protocol]] (any private interior gateway, for example Cisco's [[IGRP]])
|
|-
| style="text-align:right" class="nomobile" | 0x0A
| style="text-align:right" | 10
| BBN-RCC-MON
| BBN RCC Monitoring
|
|-
| style="text-align:right" class="nomobile" | 0x0B
| style="text-align:right" | 11
| NVP-II
| [[Network Voice Protocol]]
| {{IETF RFC|741|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x0C
| style="text-align:right" | 12
| PUP
| [[PARC Universal Packet|Xerox PUP]]
| 
|-
| style="text-align:right" class="nomobile" | 0x0D
| style="text-align:right" | 13
| ARGUS
| ARGUS
|
|-
| style="text-align:right" class="nomobile" | 0x0E
| style="text-align:right" | 14
| EMCON
| EMCON
|
|-
| style="text-align:right" class="nomobile" | 0x0F
| style="text-align:right" | 15
| XNET
| Cross Net Debugger
| IEN 158<ref>{{cite IETF |ien=158}}</ref>
|-
| style="text-align:right" class="nomobile" | 0x10
| style="text-align:right" | 16
| CHAOS
| [[Chaosnet|Chaos]]
|
|-
| style="text-align:right" class="nomobile" | 0x11
| style="text-align:right" | 17
| UDP
| [[User Datagram Protocol]]
| {{IETF RFC|768|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x12
| style="text-align:right" | 18
| MUX
| [[Multiplexing]]
| IEN 90<ref>{{cite IETF |ien=90}}</ref>
|-
| style="text-align:right" class="nomobile" | 0x13
| style="text-align:right" | 19
| DCN-MEAS
| DCN Measurement Subsystems
| 
|-
| style="text-align:right" class="nomobile" | 0x14
| style="text-align:right" | 20
| HMP
| [[Host Monitoring Protocol]]
| {{IETF RFC|869|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x15
| style="text-align:right" | 21
| PRM
| Packet Radio Measurement
|
|-
| style="text-align:right" class="nomobile" | 0x16
| style="text-align:right" | 22
| XNS-IDP
| XEROX NS IDP
|
|-
| style="text-align:right" class="nomobile" | 0x17
| style="text-align:right" | 23
| TRUNK-1
| Trunk-1
| 
|-
| style="text-align:right" class="nomobile" | 0x18
| style="text-align:right" | 24
| TRUNK-2
| Trunk-2
| 
|-
| style="text-align:right" class="nomobile" | 0x19
| style="text-align:right" | 25
| LEAF-1
| Leaf-1
| 
|-
| style="text-align:right" class="nomobile" | 0x1A
| style="text-align:right" | 26
| LEAF-2
| Leaf-2
| 
|-
| style="text-align:right" class="nomobile" | 0x1B
| style="text-align:right" | 27
| RDP
| [[Reliable Data Protocol]]
| {{IETF RFC|908|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x1C
| style="text-align:right" | 28
| IRTP
| [[Internet Reliable Transaction Protocol]]
| {{IETF RFC|938|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x1D
| style="text-align:right" | 29
| ISO-TP4
| [[ISO Transport Protocol Class 4]]
| {{IETF RFC|905|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x1E
| style="text-align:right" | 30
| NETBLT
| [[Bulk Data Transfer Protocol]]
| {{IETF RFC|998|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x1F
| style="text-align:right" | 31
| MFE-NSP
| [[MFE Network Services Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x20
| style="text-align:right" | 32
| MERIT-INP
| [[MERIT Internodal Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x21
| style="text-align:right" | 33
| DCCP
| [[Datagram Congestion Control Protocol]]
| {{IETF RFC|4340|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x22
| style="text-align:right" | 34
| 3PC
| [[Third Party Connect Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x23
| style="text-align:right" | 35
| IDPR
| [[Inter-Domain Policy Routing Protocol]]
| {{IETF RFC|1479|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x24
| style="text-align:right" | 36
| XTP
| [[Xpress Transport Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x25
| style="text-align:right" | 37
| DDP
| [[Datagram Delivery Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x26
| style="text-align:right" | 38
| IDPR-CMTP
| [[IDPR Control Message Transport Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x27
| style="text-align:right" | 39
| TP++
| [[TP++ Transport Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x28
| style="text-align:right" | 40
| IL
| [[IL (network protocol)|IL Transport Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x29
| style="text-align:right" | 41
| IPv6
| IPv6 Encapsulation ([[6to4]] and [[6in4]])
| {{IETF RFC|2473|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x2A
| style="text-align:right" | 42
| SDRP
| [[Source Demand Routing Protocol]]
| {{IETF RFC|1940|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x2B
| style="text-align:right" | 43
| IPv6-Route
| Routing Header for [[IPv6]]
| {{IETF RFC|8200|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x2C
| style="text-align:right" | 44
| IPv6-Frag
| Fragment Header for [[IPv6]]
| {{IETF RFC|8200|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x2D
| style="text-align:right" | 45
| IDRP
| [[Inter-Domain Routing Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x2E
| style="text-align:right" | 46
| RSVP
| [[Resource Reservation Protocol]]
| {{IETF RFC|2205|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x2F
| style="text-align:right" | 47
| GRE
| [[Generic Routing Encapsulation]]
| {{IETF RFC|2784|link=no}}, {{IETF RFC|2890|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x30
| style="text-align:right" | 48
| DSR
| [[Dynamic Source Routing]] Protocol
| {{IETF RFC|4728|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x31
| style="text-align:right" | 49
| BNA
| Burroughs Network Architecture
| 
|-
| style="text-align:right" class="nomobile" | 0x32
| style="text-align:right" | 50
| ESP
| [[Encapsulating Security Payload]]
| {{IETF RFC|4303|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x33
| style="text-align:right" | 51
| AH
| [[Authentication Header]]
| {{IETF RFC|4302|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x34
| style="text-align:right" | 52
| I-NLSP
| [[Integrated Net Layer Security Protocol]]
| TUBA
|-
| style="text-align:right" class="nomobile" | 0x35
| style="text-align:right" | 53
| SwIPe
| [[SwIPe (protocol)|SwIPe]]
| {{IETF RFC|5237|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x36
| style="text-align:right" | 54
| NARP
| [[NBMA Address Resolution Protocol]]
| {{IETF RFC|1735|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x37
| style="text-align:right" | 55
| MOBILE 
| [[Mobile IP|IP Mobility]]  (Min Encap)
| {{IETF RFC|2004|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x38
| style="text-align:right" | 56
| TLSP
| [[Transport Layer Security Protocol]] (using Kryptonet key management)
| 
|-
| style="text-align:right" class="nomobile" | 0x39
| style="text-align:right" | 57
| SKIP
| [[Simple Key-Management for Internet Protocol]]
| {{IETF RFC|2356|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x3A
| style="text-align:right" | 58
| IPv6-ICMP
| [[ICMP for IPv6]]
| {{IETF RFC|4443|link=no}}, {{IETF RFC|4884|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x3B
| style="text-align:right" | 59
| IPv6-NoNxt
| No Next Header for [[IPv6]]
| {{IETF RFC|8200|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x3C
| style="text-align:right" | 60
| IPv6-Opts
| Destination Options for [[IPv6]]
| {{IETF RFC|8200|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x3D
| style="text-align:right" | 61
| 
| Any host internal protocol
| 
|-
| style="text-align:right" class="nomobile" | 0x3E
| style="text-align:right" | 62
| CFTP
| [[CFTP (protocol)|CFTP]]
| 
|-
| style="text-align:right" class="nomobile" | 0x3F
| style="text-align:right" | 63
| 
| Any local network
| 
|-
| style="text-align:right" class="nomobile" | 0x40
| style="text-align:right" | 64
| SAT-EXPAK
| SATNET and Backroom EXPAK
| 
|-
| style="text-align:right" class="nomobile" | 0x41
| style="text-align:right" | 65
| KRYPTOLAN
| [[Kryptolan]]
| 
|-
| style="text-align:right" class="nomobile" | 0x42
| style="text-align:right" | 66
| RVD
| MIT [[Remote Virtual Disk Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x43
| style="text-align:right" | 67
| IPPC
| [[Internet Pluribus Packet Core]]
| 
|-
| style="text-align:right" class="nomobile" | 0x44
| style="text-align:right" | 68
| 
| Any distributed file system
| 
|-
| style="text-align:right" class="nomobile" | 0x45
| style="text-align:right" | 69
| SAT-MON
| SATNET Monitoring
| 
|-
| style="text-align:right" class="nomobile" | 0x46
| style="text-align:right" | 70
| VISA
| VISA Protocol
| 
|-
| style="text-align:right" class="nomobile" | 0x47
| style="text-align:right" | 71
| IPCU
| Internet Packet Core Utility
| 
|-
| style="text-align:right" class="nomobile" | 0x48
| style="text-align:right" | 72
| CPNX
| Computer Protocol Network Executive
| 
|-
| style="text-align:right" class="nomobile" | 0x49
| style="text-align:right" | 73
| CPHB
| [[Computer Protocol Heart Beat]]
| 
|-
| style="text-align:right" class="nomobile" | 0x4A
| style="text-align:right" | 74
| WSN
| [[Wang Span Network]]
| 
|-
| style="text-align:right" class="nomobile" | 0x4B
| style="text-align:right" | 75
| PVP 
| [[Packet Video Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x4C
| style="text-align:right" | 76
| BR-SAT-MON
| Backroom SATNET Monitoring
| 
|-
| style="text-align:right" class="nomobile" | 0x4D
| style="text-align:right" | 77
| SUN-ND
| SUN ND PROTOCOL-Temporary
| 
|-
| style="text-align:right" class="nomobile" | 0x4E
| style="text-align:right" | 78
| WB-MON
| WIDEBAND Monitoring
| 
|-
| style="text-align:right" class="nomobile" | 0x4F
| style="text-align:right" | 79
| WB-EXPAK
| WIDEBAND EXPAK
| 
|-
| style="text-align:right" class="nomobile" | 0x50
| style="text-align:right" | 80
| ISO-IP
| [[International Organization for Standardization Internet Protocol]]
|
|-
| style="text-align:right" class="nomobile" | 0x51
| style="text-align:right" | 81
| VMTP
| [[Versatile Message Transaction Protocol]]
| {{IETF RFC|1045|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x52
| style="text-align:right" | 82
| SECURE-VMTP
| Secure Versatile Message Transaction Protocol
| {{IETF RFC|1045|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x53
| style="text-align:right" | 83
| VINES
| VINES
| 
|-
| style="text-align:right" class="nomobile" | 0x54
| style="text-align:right" | 84
| TTP
| TTP (Transaction Transport Protocol) (obsoleted March 2023)
| 
|-
| style="text-align:right" class="nomobile" | 0x54
| style="text-align:right" | 84
| IPTM
| [[Internet Protocol Traffic Manager]]
| 
|-
| style="text-align:right" class="nomobile" | 0x55
| style="text-align:right" | 85
| NSFNET-IGP
| NSFNET-IGP
| 
|-
| style="text-align:right" class="nomobile" | 0x56
| style="text-align:right" | 86
| DGP
| [[Dissimilar Gateway Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x57
| style="text-align:right" | 87
| TCF
| TCF
| 
|-
| style="text-align:right" class="nomobile" | 0x58
| style="text-align:right" | 88
| EIGRP
| [[EIGRP]]
| Informational {{IETF RFC|7868|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x59
| style="text-align:right" | 89
| OSPF
| [[Open Shortest Path First]]
| {{IETF RFC|2328|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x5A
| style="text-align:right" | 90
| Sprite-RPC
| Sprite RPC Protocol
| 
|-
| style="text-align:right" class="nomobile" | 0x5B
| style="text-align:right" | 91
| LARP
| [[Locus Address Resolution Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x5C
| style="text-align:right" | 92
| MTP
| [[Multicast Transport Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x5D
| style="text-align:right" | 93
| AX.25
| [[AX.25]]
| 
|-
| style="text-align:right" class="nomobile" | 0x5E
| style="text-align:right" | 94
| OS
| [[KA9Q|KA9Q NOS compatible IP over IP tunneling]]
| 
|-
| style="text-align:right" class="nomobile" | 0x5F
| style="text-align:right" | 95
| MICP
| [[Mobile Internetworking Control Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x60
| style="text-align:right" | 96
| SCC-SP
| Semaphore Communications Sec. Pro
| 
|-
| style="text-align:right" class="nomobile" | 0x61
| style="text-align:right" | 97
| ETHERIP
| [[Ethernet-within-IP Encapsulation]]
| {{IETF RFC|3378|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x62
| style="text-align:right" | 98
| ENCAP
| [[Encapsulation Header]]
| {{IETF RFC|1241|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x63
| style="text-align:right" | 99
| 
| Any private encryption scheme
| 
|-
| style="text-align:right" class="nomobile" | 0x64
| style="text-align:right" | 100
| GMTP
| [[GMTP]]
| 
|-
| style="text-align:right" class="nomobile" | 0x65
| style="text-align:right" | 101
| IFMP
| [[Ipsilon Flow Management Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x66
| style="text-align:right" | 102
| PNNI
| [[Private Network-to-Network Interface|PNNI over IP]]
| 
|-
| style="text-align:right" class="nomobile" | 0x67
| style="text-align:right" | 103
| PIM
| [[Protocol Independent Multicast]]
| 
|-
| style="text-align:right" class="nomobile" | 0x68
| style="text-align:right" | 104
| ARIS
| IBM's ARIS (Aggregate Route IP Switching) Protocol
| 
|-
| style="text-align:right" class="nomobile" | 0x69
| style="text-align:right" | 105
| SCPS
| [[Space Communications Protocol Specifications|SCPS (Space Communications Protocol Standards)]]
| SCPS-TP<ref>{{cite web |url=http://public.ccsds.org/publications/archive/714x0b2.pdf |title=SPACE COMMUNICATIONS PROTOCOL SPECIFICATION (SCPS)—TRANSPORT PROTOCOL (SCPS-TP) |accessdate=2006-05-27 |url-status=dead |archiveurl=https://web.archive.org/web/20070927024510/http://public.ccsds.org/publications/archive/714x0b2.pdf |archivedate=2007-09-27 |publisher=[[Consultative Committee for Space Data Systems]] |df=ymd}}</ref>
|-
| style="text-align:right" class="nomobile" | 0x6A
| style="text-align:right" | 106
| QNX
| [[QNX]]
| 
|-
| style="text-align:right" class="nomobile" | 0x6B
| style="text-align:right" | 107
| A/N
| Active Networks
| 
|-
| style="text-align:right" class="nomobile" | 0x6C
| style="text-align:right" | 108
| IPComp
| [[IP Payload Compression Protocol]]
| {{IETF RFC|3173|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x6D
| style="text-align:right" | 109
| SNP
| [[Sitara Networks Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x6E
| style="text-align:right" | 110
| Compaq-Peer
| [[Compaq Peer Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x6F
| style="text-align:right" | 111
| IPX-in-IP
| [[IPX in IP]]
| 
|-
| style="text-align:right" class="nomobile" | 0x70
| style="text-align:right" | 112
| VRRP
| [[Virtual Router Redundancy Protocol]], [[Common Address Redundancy Protocol]] (not [[IANA]] assigned)
| {{IETF RFC|5798|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x71
| style="text-align:right" | 113
| PGM
| [[Pragmatic General Multicast|PGM Reliable Transport Protocol]]
| {{IETF RFC|3208|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x72
| style="text-align:right" | 114
| 
| Any [[0-hop protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x73
| style="text-align:right" | 115
| L2TP
| [[L2TPv3|Layer Two Tunneling Protocol Version 3]]
| {{IETF RFC|3931|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x74
| style="text-align:right" | 116
| DDX
| D-II Data Exchange (DDX)
| 
|-
| style="text-align:right" class="nomobile" | 0x75
| style="text-align:right" | 117
| IATP
| [[Interactive Agent Transfer Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x76
| style="text-align:right" | 118
| STP
| [[Schedule Transfer Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x77
| style="text-align:right" | 119
| SRP
| [[SpectraLink Radio Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x78
| style="text-align:right" | 120
| UTI
| Universal Transport Interface Protocol
| 
|-
| style="text-align:right" class="nomobile" | 0x79
| style="text-align:right" | 121
| SMP
| [[Simple Message Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x7A
| style="text-align:right" | 122
| SM
| Simple Multicast Protocol
| [http://tools.ietf.org/html/draft-perlman-simple-multicast-03 draft-perlman-simple-multicast-03]
|-
| style="text-align:right" class="nomobile" | 0x7B
| style="text-align:right" | 123
| PTP
| [[Performance Transparency Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x7C
| style="text-align:right" | 124
| IS-IS over IPv4
| [[IS-IS|Intermediate System to Intermediate System (IS-IS) Protocol]] over [[IPv4]]
| {{IETF RFC|1142|link=no}} and {{IETF RFC|1195|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x7D
| style="text-align:right" | 125
| FIRE
| Flexible Intra-AS Routing Environment
| 
|-
| style="text-align:right" class="nomobile" | 0x7E
| style="text-align:right" | 126
| CRTP
| [[Combat Radio Transport Protocol]]
| 
|-
| style="text-align:right" class="nomobile" | 0x7F
| style="text-align:right" | 127
| CRUDP
| [[Combat Radio User Datagram]]
| 
|-
| style="text-align:right" class="nomobile" | 0x80
| style="text-align:right" | 128
| SSCOPMCE
| Service-Specific Connection-Oriented Protocol in a Multilink and Connectionless Environment
| [http://www.itu.int/rec/T-REC-Q.2111-199912-I ITU-T Q.2111 (1999)]
|-
| style="text-align:right" class="nomobile" | 0x81
| style="text-align:right" | 129
| IPLT
| 
| 
|-
| style="text-align:right" class="nomobile" | 0x82
| style="text-align:right" | 130
| SPS
| [[Secure Packet Shield]]
| 
|-
| style="text-align:right" class="nomobile" | 0x83
| style="text-align:right" | 131
| PIPE
| Private IP Encapsulation within IP
| [http://www.watersprings.org/pub/id/draft-petri-mobileip-pipe-00.txt Expired I-D draft-petri-mobileip-pipe-00.txt]
|-
| style="text-align:right" class="nomobile" | 0x84
| style="text-align:right" | 132
| SCTP
| [[Stream Control Transmission Protocol]]
| {{IETF RFC|4960|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x85
| style="text-align:right" | 133
| FC
| [[Fibre Channel]]
| 
|-
| style="text-align:right" class="nomobile" | 0x86
| style="text-align:right" | 134
| RSVP-E2E-IGNORE
| Reservation Protocol (RSVP) End-to-End Ignore
| {{IETF RFC|3175|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x87
| style="text-align:right" | 135
| Mobility Header
| [[Mobility Extension Header for IPv6]]
| {{IETF RFC|6275|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x88
| style="text-align:right" | 136
| UDPLite
| [[UDP Lite|Lightweight User Datagram Protocol]]
| {{IETF RFC|3828|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x89
| style="text-align:right" | 137
| MPLS-in-IP
| [[Multiprotocol Label Switching]] Encapsulated in IP
| {{IETF RFC|4023|link=no}}, {{IETF RFC|5332|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x8A
| style="text-align:right" | 138
| manet
| [[MANET]] Protocols
| {{IETF RFC|5498|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x8B
| style="text-align:right" | 139
| HIP
| [[Host Identity Protocol]]
| {{IETF RFC|5201|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x8C
| style="text-align:right" | 140
| Shim6
| [[Site Multihoming by IPv6 Intermediation]]
| {{IETF RFC|5533|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x8D
| style="text-align:right" | 141
| WESP
| [[Wrapped Encapsulating Security Payload]]
| {{IETF RFC|5840|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x8E
| style="text-align:right" | 142
| ROHC
| [[Robust Header Compression]]
| {{IETF RFC|5856|link=no}}
|-
| style="text-align:right" class="nomobile" | 0x8F
| style="text-align:right" | 143
| Ethernet
| [[Segment Routing over IPv6]]
| {{IETF RFC|8986|link=no}}
|--
| style="text-align:right" class="nomobile" | 0x90
| style="text-align:right" | 144
| AGGFRAG
| [[AGGFRAG Encapsulation Payload for ESP]]
| {{IETF RFC|9347|link=no}}
|--
| style="text-align:right" class="nomobile" | 0x91
| style="text-align:right" | 145
| NSH
| Network Service Header
| [https://datatracker.ietf.org/doc/draft-ietf-spring-nsh-sr/ draft-ietf-spring-nsh-sr]
|--
| style="text-align:right" class="nomobile" | 0x92
| style="text-align:right" | 146
| Homa
| Homa transport protocol
| [https://people.csail.mit.edu/alizadeh/papers/homa-sigcomm18.pdf Homa research paper], [https://github.com/PlatformLab/HomaModule HomaModule]
|--
| style="text-align:right" class="nomobile" | 0x93
| style="text-align:right" | 147
| BIT-EMU
| Bit-stream Emulation
| [https://www.iana.org/go/draft-ietf-pals-ple-14 draft-ietf-pals-ple-14],
|--
| style="text-align:right" class="nomobile" | 0x94-0xFC
| style="text-align:right" | 148-252
| colspan="2" style="background-color:#EEE" | Unassigned
|
|-
| style="text-align:right" class="nomobile" | 0xFD-0xFE
| style="text-align:right" | 253-254
| colspan="2" | Use for experimentation and testing
| {{IETF RFC|3692|link=no}}
|-
| style="text-align:right" class="nomobile" | 0xFF
| style="text-align:right" | 255
| colspan="2" style="background-color:#FED" | Reserved
|
|}