プロトコル番号 (IP)

IPv4ではProtocol(プロトコル番号)欄、IPv6ではNext Header(次ヘッダー)欄の番号となるが、プロトコル番号自体はIPv4とIPv6で共通である。

古いものはRFC 1700、最新のものはIANAのサイトにて公開されている。

プロトコルの名前は慣習的に大文字で表記される。

またそのプロトコルを実際に実装したものについては小文字で表記されるのが一般的である。

番号	キーワード	プロトコル名	照会資料
0	HOPOPT	IPv6 Hop-by-Hop Option	RFC 1883
1	ICMP	Internet Control Message	RFC 792
2	IGMP	Internet Group Management	RFC 1112
3	GGP	Gateway-to-Gateway	RFC 823
4	IPv4	IPv4 in IPv4 (カプセル化)	RFC 2003
5	ST	Stream	RFC 1190、RFC 1819
6	TCP	Transmission Control	RFC 793
7	CBT	CBT	Ballardie
8	EGP	Exterior Gateway Protocol	RFC 888、David_Mills
9	IGP	any private interior gateway	IANA
10	BBN-RCC-MON	BBN RCC Monitoring	Steve_Chipman
11	NVP-II	Network Voice Protocol	RFC 741、Steve_Casner
12	PUP	PUP	XEROX
13	ARGUS	ARGUS	Robert_W_Scheifler
14	EMCON	EMCON	?
15	XNET	Cross Net Debugger	IEN 158、Jack_Haverty
16	CHAOS	Chaos	J_Noel_Chiappa
17	UDP	User Datagram	RFC 768、Jon_Postel
18	MUX	Multiplexing	IEN 90、Jon_Postel
19	DCN-MEAS	DCN Measurement Subsystems	David_Mills
20	HMP	Host Monitoring	RFC 869、Bob_Hinden
21	PRM	Packet Radio Measurement	Zaw_Sing_Su
22	XNS-IDP	XEROX NS IDP	XEROX
23	TRUNK-1	Trunk-1	Barry_Boehm
24	TRUNK-2	Trunk-2
25	LEAF-1	Leaf-1	Barry_Boehm
26	LEAF-2	Leaf-2
27	RDP	Reliable Data Protocol	RFC 908、Bob_Hinden
28	IRTP	Internet Reliable Transaction	RFC 938、Trudy_Miller
29	ISO-TP4	ISO Transport Protocol Class 4	RFC 905
30	NETBLT	Bulk Data Transfer Protocol	RFC 969、David_Clark
31	MFE-NSP	MFE Network Services Protocol	Barry_Howard
32	MERIT-INP	MERIT Internodal Protocol	Hans_Werner_Braun
33	DCCP	Datagram Congestion Control Protocol	RFC 4340
34	3PC	Third Party Connect Protocol	Stuart_A_Friedberg
35	IDPR	Inter-Domain Policy Routing Protocol	Martha_Steenstrup
36	XTP	XTP	Greg_Chesson
37	DDP	Datagram Delivery Protocol	Wesley_Craig
38	IDPR-CMTP	IDPR Control Message Transport Protocol	Martha_Steenstrup
39	TP++	TP++ Transport Protocol	Dirk_Fromhein
40	IL	IL Transport Protocol	Dave_Presotto
41	IPv6	IP in IPv6 (カプセル化)	RFC 2473
42	SDRP	Source Demand Routing Protocol	Deborah_Estrin
43	IPv6-Route	Routing Header for IPv6	Steve_Deering
44	IPv6-Frag	Fragment Header for IPv6
45	IDRP	Inter-Domain Routing Protocol	Sue_Hares
46	RSVP	Reservation Protocol	RFC 2205、RFC 3209、Bob_Braden
47	GRE	General Routing Encapsulation	RFC 2784、Tony_Li
48	DSR	Dynamic Source Routing Protocol	RFC 4728
49	BNA	BNA	Gary Salamon
50	ESP	Encap Security Payload	RFC 4303
51	AH	Authentication Header	RFC 4302
52	I-NLSP	Integrated Net Layer Security TUBA	K_Robert_Glenn
53	SWIPE	IP with Encryption	John_Ioannidis
54	NHRP	NBMA Address Resolution Protocol	RFC 1735
55	MOBILE	IP Mobility	Charlie_Perkins
56	TLSP	Transport Layer Security Protocol	Christer_Oberg
57	SKIP	SKIP	Tom_Markson
58	IPv6-ICMP	ICMP for IPv6	RFC 2460
59	IPv6-NoNxt	No Next Header for IPv6
60	IPv6-Opts	Destination Options for IPv6
61		any host internal protocol	IANA
62	CFTP	CFTP	Harry_Forsdick
63		any local network	IANA
64	SAT-EXPAK	SATNET and Backroom EXPAK	Steven_Blumenthal
65	KRYPTOLAN	Kryptolan	Paul
66	RVD	MIT Remote Virtual Disk Protocol	Michael_Greenwald
67	IPPC	Internet Pluribus Packet Core	Steven_Blumenthal
68		any distributed file system	IANA
69	SAT-MON	SATNET Monitoring	Steven_Blumenthal
70	VISA	VISA Protocol	Gene_Tsudik
71	IPCV	Internet Packet Core Utility	Steven_Blumenthal
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	Steve_Casner
76	BR-SAT-MON	Backroom SATNET Monitoring	Steven_Blumenthal
77	SUN-ND	SUN ND PROTOCOL-Temporary	William_Melohn
78	WB-MON	WIDEBAND Monitoring	Steven_Blumenthal
79	WB-EXPAK	WIDEBAND EXPAK
80	ISO-IP	ISO Internet Protocol	Marshall_T_Rose
81	VMTP	VMTP	Dave_Cheriton
82	SECURE-VMTP	SECURE-VMTP	Dave_Cheriton
83	VINES	VINES	Horn
84	TTP	Transaction Transport Protocol	Jim_Stevens
	IPTM	Internet Protocol Traffic Manager	Jim_Stevens
85	NSFNET-IGP	NSFNET-IGP	Hans_Werner_Braun
86	DGP	Dissimilar Gateway Protocol	Mike_Little
87	TCF	TCF	Guillermo_A_Loyola
88	EIGRP	EIGRP	Guenther_Schreiner
89	OSPFIGP	OSPFIGP	RFC 1583、RFC 2328、RFC 5340、RFC 5340、John_Moy
90	Sprite-RPC	Sprite RPC Protocol	Bruce Willins
91	LARP	Locus Address Resolution Protocol	Brian Horn
92	MTP	Multicast Transport Protocol	Susie_Armstrong
93	AX.25	AX.25 Frames	Brian_Kantor
94	IPIP	IP-within-IP Encapsulation Protocol	John_Ioannidis
95	MICP	Mobile Internetworking Control Pro.	John_Ioannidis
96	SCC-SP	Semaphore Communications Sec. Pro.	Howard_Hart
97	ETHERIP	Ethernet-within-IP Encapsulation	RFC 3781
98	ENCAP	Encapsulation Header	RFC 1241、Robert_Woodburn
99		any private encryption scheme	IANA
100	GMTP	GMTP	RXB5
101	IFMP	Ipsilon Flow Management Protocol	Bob_Hinden
102	PNNI	PNNI over IP	Ross_Callon
103	PIM	Protocol Independent Multicast	RFC 4601、Dino_Farinacc
104	ARIS	ARIS	Nancy_Feldman
105	SCPS	SCPS	Robert_Durst
106	QNX	QNX	Michael_Hunter
107	A/N	Active Networks	Bob_Braden
108	IPComp	IP Payload Compression Protocol	RFC 2393
109	SNP	Sitara Networks Protocol	Manickam_R_Sridhar
110	Compaq-Peer	Compaq Peer Protocol	Victor_Volpe
111	IPX-in-IP	IPX in IP	CJ_Lee
112	VRRP	Virtual Router Redundancy Protocol	RFC 5798
113	PGM	PGM Reliable Transport Protocol	Tony_Speakman
114		any 0-hop protocol	IANA
115	L2TP	Layer Two Tunneling Protocol	RFC 3931、Bernard_Aboba
116	DDX	D-II Data Exchange (DDX)	John_Worley
117	IATP	Interactive Agent Transfer Protocol	John_Murphy
118	STP	Schedule Transfer Protocol	Jean_Michel_Pittet
119	SRP	SpectraLink Radio Protocol	Mark_Hamilton
120	UTI	UTI	Peter_Lothberg
121	SMP	Simple Message Protocol	Leif_Ekblad
122	SM	SM	Jon_Crowcroft、I-D[perlman-simple-multicast]
123	PTP	Performance Transparency Protocol	Michael_Welzl
124		ISIS over IPv4	Tony_Przygienda
125	FIRE		Criag_Partridge
126	CRTP	Combat Radio Transport Protocol	Robert_Sautter
127	CRUDP	Combat Radio User Datagram	Robert_Sautter
128	SSCOPMCE		Kurt_Waber
129	IPLT		Hollbach
130	SPS	Secure Packet Shield	Bill_McIntosh
131	PIPE	Private IP Encapsulation within IP	Bernhard_Petri
132	SCTP	Stream Control Transmission Protocol	Randall_R_Stewart
133	FC	Fibre Channel	Murali_Rajagopal、RFC 6172
134	RSVP-E2E-IGNORE		RFC 3175
135		Mobility Header	RFC 6275
136	UDPLite		RFC 3828
137	MPLS-in-IP		RFC 4023
138	manet	MANET Protocols	RFC 5498
139	HIP	Host Identity Protocol	RFC 5201
140	Shim6	Shim6 Protocol	RFC 5533
141	WESP	Wrapped Encapsulating Security Payload	RFC 5840
142	ROHC	Robust Header Compression	RFC 5858
253		実験およびテスト用	RFC 3692
254		実験およびテスト用
255		Reserved	IANA