List of RFCs

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This is a partial list of RFCs (request for comments memoranda). A Request for Comments (RFC) is a publication in a series from the principal technical development and standards-setting bodies for the Internet, most prominently the Internet Engineering Task Force (IETF).

While there are over 9,963 RFCs as of May 2026, this list consists of RFCs that have related articles. A complete list is available from the IETF website.[1]

Numerical list

# Title Date published Related article Made obsolete by Notes
RFC 20 ASCII format for Network Interchange October 16, 1969 ASCII
RFC 42 Message Data Types March 31, 1970
RFC 768 User Datagram Protocol August 28, 1980 UDP
RFC 783 THE TFTP PROTOCOL (REVISION 2) June 1981 TFTP RFC 1350
RFC 791 Internet Protocol September 1981 IPv4
RFC 792 INTERNET CONTROL MESSAGE PROTOCOL September 1981 ICMP
RFC 793 TRANSMISSION CONTROL PROTOCOL September 1981 TCP RFC 9293
RFC 826 An Ethernet Address Resolution Protocol November 1982 ARP
RFC 854 TELNET PROTOCOL SPECIFICATION May 1983 Telnet
RFC 855 TELNET OPTION SPECIFICATIONS May 1983
RFC 862 Echo Protocol May 1983 Echo
RFC 863 Discard Protocol May 1983 DISCARD
RFC 864 Character Generator Protocol May 1983 CHARGEN
RFC 868 Time Protocol May 1983 TIME
RFC 903 A Reverse Address Resolution Protocol June 1984 RARP
RFC 937 POST OFFICE PROTOCOL - VERSION 2 February 1985 POP v 2
RFC 951 BOOTSTRAP PROTOCOL (BOOTP) September 1985 BOOTP
RFC 959 FILE TRANSFER PROTOCOL (FTP) October 1985 FTP
RFC 1034 DOMAIN NAMES - CONCEPTS AND FACILITIES November 1987 DNS
RFC 1035 DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION November 1987 DNS
RFC 1036 Standard for Interchange of USENET Messages December 1987 Usenet
RFC 1055 A Non-Standard for Transmission of IP Datagrams Over Serial Lines: SLIP June 1988 SLIP
RFC 1058 Routing Information Protocol June 1988 RIP v 1
RFC 1059 Network Time Protocol (version 1) specification and implementation July 1988 NTP v 1
RFC 1087 Ethics and the Internet January 1989 Internet Ethics
RFC 1118 The Hitchhikers Guide to the Internet September 1989 The Hitchhikers Guide to the Internet
RFC 1119 Network Time Protocol (version 2) specification and implementation September 1989 NTP v 2
RFC 1149 A Standard for the Transmission of IP Datagrams on Avian Carriers April 1, 1990 IP over Avian Carriers
RFC 1157 A Simple Network Management Protocol (SNMP) May 1990 SNMP v1
RFC 1176 INTERACTIVE MAIL ACCESS PROTOCOL - VERSION 2 August 1990 IMAP v 2
RFC 1191 Path MTU Discovery November 1990 PMTUD Obsoletes RFC 1063
RFC 1305 Network Time Protocol (Version 3) Specification, Implementation and Analysis March 1992 NTP v 3 RFC 5905 Obsoletes RFC 1119, RFC 1059, RFC 958
RFC 1321 The MD5 Message-Digest Algorithm April 1992 MD5
RFC 1350 THE TFTP PROTOCOL (REVISION 2) July 1992 TFTP Obsoletes RFC 783
RFC 1436 The Internet Gopher Protocol March 1993 Gopher
RFC 1441 Introduction to version 2 of the Internet-standard Network Management Framework April 1993 SNMP v 2
RFC 1459 Internet Relay Chat Protocol May 1993 IRC
RFC 1730 INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4 December 1994 IMAP v 4
RFC 1777 Lightweight Directory Access Protocol March 1995 LDAP
RFC 1855 Netiquette Guidelines October 1995 Netiquette
RFC 1918 Address Allocation for Private Internets February 1996 Private network
RFC 1928 SOCKS Protocol Version 5 March 1996 SOCKS5
RFC 1939 Post Office Protocol - Version 3 May 1996 POP v 3
RFC 1945 Hypertext Transfer Protocol—HTTP/1.0 May 1996 HTTP v 1.0
RFC 1948 Defending Against Sequence Number Attacks May 1996 IP spoofing
RFC 1950 ZLIB Compressed Data Format Specification version 3.3 May 1996 Zlib v 3.3
RFC 1951 DEFLATE Compressed Data Format Specification version 1.3 May 1996 DEFLATE v 1.3
RFC 1952 GZIP file format specification version 4.3 May 1996 Gzip v 4.3
RFC 1964 The Kerberos Version 5 GSS-API Mechanism June 1996 Kerberos; GSSAPI
RFC 2080 RIPng for IPv6 January 1997 RIP v ng
RFC 2119 Key words for use in RFCs to Indicate Requirement Levels March 1997 Request for Comments Updated by RFC 8174
RFC 2131 Dynamic Host Configuration Protocol March 1997 DHCP
RFC 2177 IMAP4 IDLE command June 1997 IMAP IDLE
RFC 2195 IMAP/POP AUTHorize Extension for Simple Challenge/Response September 1997 CRAM-MD5
RFC 2228 FTP Security Extensions October 1997 FTP
RFC 2230 Key Exchange Delegation Record for the DNS November 1997 Secure DNS
RFC 2246 The TLS Protocol Version 1.0 January 1999 TLS 1.0
RFC 2251 Lightweight Directory Access Protocol (v3) December 1997 LDAP v 3
RFC 2252 Lightweight Directory Access Protocol (v3): Attribute Syntax Definitions
RFC 2253 Lightweight Directory Access Protocol (v3): UTF-8 String Representation of Distinguished Names
RFC 2254 The String Representation of LDAP Search Filters
RFC 2255 The LDAP URL Format
RFC 2256 A Summary of the X.500(96) User Schema for use with LDAPv3
RFC 2326 Real Time Streaming Protocol (RTSP) April 1998 RTSP
RFC 2327 SDP: Session Description Protocol April 1998 SDP
RFC 2328 OSPF Version 2 April 1998 OSPF
RFC 2351 Mapping of Airline Reservation, Ticketing, and Messaging Traffic over IP May 1998 MATIP
RFC 2362 Protocol Independent Multicast-Sparse Mode (PIM-SM) June 1998 PIM
RFC 2397 The "data" URL scheme August 1998 Data: URI scheme
RFC 2407 Internet IP Security Domain of Interpretation for ISAKMP. November 1998 IKE
RFC 2408 Internet Security Association and Key Management Protocol (ISAKMP)
RFC 2409 The Internet Key Exchange (IKE)
RFC 2427 Multiprotocol Interconnect over Frame Relay September 1998 Frame Relay 1294, 1490
RFC 2453 RIP Version 2 November 1998 RIP v 2
RFC 2460 Internet Protocol, Version 6 (IPv6) Specification December 1998 IPv6 RFC 8200
RFC 2549 IP over Avian Carriers with Quality of Service April 1, 1999 IP over Avian Carriers
RFC 2555 30 Years of RFCs April 7, 1999 Retraces the history of RFCs
RFC 2570 Introduction to Version 3 of the Internet-standard Network Management Framework April 1999 SNMP v3
RFC 2595 Using TLS with IMAP, POP3 and ACAP June 1999 STARTTLS for IMAP, POP3 and ACAP
RFC 2606 Reserved Top Level DNS Names June 1999 Fictitious domain name example.com, .test, ...
RFC 2740 OSPF for IPv6 December 1999 OSPF
RFC 2743 Generic Security Service Application Program Interface Version 2, Update 1 January 2000 GSSAPI v 2
RFC 2744 Generic Security Service API Version 2 : C-bindings
RFC 2801 Internet Open Trading Protocol - IOTP Version 1.0 April 2000 Internet Open Trading Protocol
RFC 2802 Digital Signatures for the v1.0 Internet Open Trading Protocol (IOTP) April 2000 Internet Open Trading Protocol
RFC 2810 Internet Relay Chat: Architecture April 2000 IRC
RFC 2811 Internet Relay Chat: Channel Management
RFC 2812 Internet Relay Chat: Client Protocol
RFC 2813 Internet Relay Chat: Server Protocol
RFC 2853 Generic Security Service API Version 2 : Java Bindings June 2000 GSSAPI v 2
RFC 2865 Remote Authentication Dial In User Service (RADIUS) June 2000 RADIUS
RFC 2866 RADIUS Accounting June 2000
RFC 2935 Internet Open Trading Protocol (IOTP) HTTP Supplement September 2000 Internet Open Trading Protocol
RFC 2974 Session Announcement Protocol October 2000 SAP
RFC 3504 Internet Open Trading Protocol (IOTP), Version 1, Errata March 2003 Internet Open Trading Protocol
RFC 3022 Traditional IP Network Address Translator (Traditional NAT) January 2001 NAT
RFC 3031 Multiprotocol Label Switching Architecture January 2001 MPLS
RFC 3053 IPv6 Tunnel Broker January 2001 Tunnel Broker
RFC 3056 Connection of IPv6 Domains via IPv4 Clouds February 2001 6to4
RFC 3080 The Blocks Extensible Exchange Protocol Core March 2001 BEEP
RFC 3162 RADIUS and IPv6 August 2001 RADIUS (IPv6)
RFC 3207 SMTP Service Extension for Secure SMTP over Transport Layer Security February 2002 STARTTLS for SMTP
RFC 3261 SIP: Session Initiation Protocol June 2002 SIP
RFC 3284 The VCDIFF Generic Differencing and Compression Data Format June 2002 VCDIFF
RFC 3286 An Introduction to the Stream Control Transmission Protocol (SCTP) May 2002 SCTP
RFC 3315 Dynamic Host Configuration Protocol for IPv6 (DHCPv6) July 2003 DHCP (IPv6)
RFC 3339 Date and Time on the Internet: Timestamps July 2002 Timestamp
RFC 3376 Internet Group Management Protocol, Version 3 October 2002 IGMP v 3
RFC 3401 Dynamic Delegation Discovery System (DDDS) Part One: The Comprehensive DDDS October 2002 DDDS
RFC 3402 Dynamic Delegation Discovery System (DDDS) Part Two: The Algorithm
RFC 3403 Dynamic Delegation Discovery System (DDDS) Part Three: The Domain Name System (DNS) Database
RFC 3404 Dynamic Delegation Discovery System (DDDS) Part Four: The Uniform Resource Identifiers (URI) Resolution Application
RFC 3405 Dynamic Delegation Discovery System (DDDS) Part Five: URI.ARPA Assignment Procedures
RFC 3492 Punycode: A Bootstring encoding of Unicode for Internationalized Domain Names in Applications (IDNA) March 2003 Punycode
RFC 3501 INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 March 2003 IMAP v 4r1
RFC 3530 Network File System (NFS) version 4 Protocol April 2003 NFS v 4 RFC 7530
RFC 3538 Secure Electronic Transaction (SET) Supplement for the v1.0 Internet Open Trading Protocol (IOTP) June 2003 Internet Open Trading Protocol
RFC 3550 RTP: A Transport Protocol for Real-Time Applications July 2003 RTP
RFC 3711 The Secure Real-time Transport Protocol (SRTP) March 2004 SRTP
RFC 3720 Internet Small Computer Systems Interface (iSCSI) April 2004 ISCSI
RFC 3730 Extensible Provisioning Protocol (EPP) March 2004 Extensible Provisioning Protocol
RFC 3783 Small Computer Systems Interface (SCSI) Command Ordering Considerations with iSCSI May 2004 ISCSI
RFC 3801 Voice Profile for Internet Protocol June 2004 VPIM
RFC 3830 MIKEY: Multimedia Internet KEYing August 2004 MIKEY
RFC 3867 Payment Application Programmers Interface (API) for v1.0 November 2004 Internet Open Trading Protocol
RFC 3977 Network News Transfer Protocol October 2006 NNTP
RFC 4121 The Kerberos Version 5 - Generic Security Service Application Program Interface (GSS-API) July 2005 Kerberos
RFC 4122 A Universally Unique IDentifier (UUID) URN Namespace July 2005 UUID
RFC 4151 The 'tag' URI Scheme October 2005 Tag URI scheme
RFC 4213 Basic Transition Mechanisms for IPv6 Hosts and Routers October 2005 6in4
RFC 4217 Securing FTP with TLS October 2005 SSL FTP (FTPS)
RFC 4271 Border Gateway Protocol 4 January 2006 Border Gateway Protocol
RFC 4287 The Atom Syndication Format December 2005 Atom
RFC 4251 The Secure Shell (SSH) Protocol Architecture January 2006 SSH-2
RFC 4291 IP Version 6 Addressing Architecture February 2006 IPv6
RFC 4353 A Framework for Conferencing with the Session Initiation Protocol (SIP) February 2006 Conference call
RFC 4408 Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1 January 2006 SPF
RFC 4422 Simple Authentication and Security Layer (SASL) June 2006 SASL
RFC 4541 Considerations for Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Snooping Switches May 2006 IGMP snooping
RFC 4575 A Session Initiation Protocol (SIP) Event Package for Conference State August 2006 Conference call
RFC 4579 Session Initiation Protocol (SIP) Call Control - Conferencing for User Agents August 2006
RFC 6234 US Secure Hash Algorithms (SHA and HMAC-SHA) July 2006 SHA-1, SHA-2
RFC 4655 A Path Computation Element (PCE)-Based Architecture August 2008 Path computation element
RFC 4787 Network Address Translation (NAT) Behavioral Requirements for Unicast UDP January 2007 NAT
RFC 4960 Stream Control Transmission Protocol September 2007 SCTP
RFC 5023 The Atom Publishing Protocol October 2007 Atom
RFC 5228 Sieve: An Email Filtering Language January 2008 Sieve Obsoletes RFC 3028
RFC 5321 Simple Mail Transfer Protocol October 2008 SMTP, Internet Message Format
RFC 5322 Internet Message Format October 2008
RFC 5533 Shim6: Level 3 Multihoming Shim Protocol for IPv6 June 2009 Site Multihoming by IPv6 Intermediation
RFC 5545 iCalendar Specification September 2009 iCalendar
RFC 5646 Tags for Identifying Languages September 2009 language tags
RFC 5849 The OAuth 1.0 Protocol April 2010 OAuth
RFC 5880 Bidirectional Forwarding Detection June 2010 BFD
RFC 5881 BFD for IPv4 and IPv6 (Single Hop) June 2010 BFD
RFC 5905 Network Time Protocol Version 4: Protocol and Algorithms Specification June 2010 NTP v 4 Obsoletes RFC 1305, RFC 4330
RFC 5969 IPv6 Rapid Deployment on IPv4 Infrastructures (6rd) January 2010 IPv6 rapid deployment
RFC 6238 TOTP: Time-Based One-Time Password Algorithm May 2011 TOTP
RFC 6265 HTTP State Management Mechanism April 2011 HTTP cookie
RFC 6409 Message submission for mail November 2011 message submission agent replaces 2476, 4409
RFC 6455 The WebSocket Protocol December 2011 WebSocket
RFC 6508 Sakai-Kasahara Key Encryption (SAKKE) February 2012 SAKKE
RFC 6716 Definition of the Opus Audio Codec September 2012 Opus (audio format) Updated by RFC 8251
RFC 6726 File Delivery over Unidirectional Transport (FLUTE) November 2012 FLUTE Obsoletes RFC 3926
RFC 6749 The OAuth 2.0 Authorization Framework October 2012 OAuth
RFC 6797 HTTP Strict Transport Security (HSTS) November 2012 HTTP Strict Transport Security
RFC 6805 The Application of the Path Computation Element Architecture to the Determination of a Sequence of Domains in MPLS and GMPLS November 2012 Path computation element
RFC 7230 Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing June 2014 HTTP v1.1 Obsoletes 2616
RFC 7231 Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content June 2014 HTTP v1.1 Obsoletes 2616
RFC 7232 Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests June 2014 HTTP v1.1 Obsoletes 2616
RFC 7233 Hypertext Transfer Protocol (HTTP/1.1): Range Requests June 2014 HTTP v1.1, Byte serving Obsoletes 2616
RFC 7234 Hypertext Transfer Protocol (HTTP/1.1): Caching June 2014 HTTP v1.1 Obsoletes 2616
RFC 7235 Hypertext Transfer Protocol (HTTP/1.1): Authentication June 2014 HTTP v1.1 Obsoletes 2616
RFC 7252 Constrained Application Protocol (CoAP) June 2014 Constrained Application Protocol
RFC 7301 Transport Layer Security (TLS): Application-Layer Protocol Negotiation Extension July 2014 Application-Layer Protocol Negotiation
RFC 7348 Virtual eXtensible Local Area Network (VXLAN): A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks August 2014 VXLAN
RFC 7469 Public Key Pinning Extension for HTTP April 2015 HTTP Public Key Pinning
RFC 7530 Network File System (NFS) version 4 Protocol March 2015 NFS v 4
RFC 7540 Hypertext Transfer Protocol Version 2 (HTTP/2) May 2015 HTTP/2
RFC 7541 HPACK: Header Compression for HTTP/2 May 2015
RFC 7567 IETF Recommendations Regarding Active Queue Management July 2015 Active Queue Management
RFC 7725 An HTTP Status Code to Report Legal Obstacles December 2015 HTTP 451
RFC 7871 Client Subnet in DNS Queries May 2016 Domain Name System
RFC 8391 XMSS: eXtended Merkle Signature Scheme May 2018 Hash-based cryptography
RFC 8392 CBOR Web Token (CWT) May 2018
RFC 9000 QUIC: A UDP-Based Multiplexed and Secure Transport May 2021 QUIC
RFC 9293 Transmission Control Protocol (TCP) August 2022 TCP Obsoletes RFC 793
RFC 9338 CBOR Object Signing and Encryption (COSE): Countersignatures December 2022 COSE Updates RFC 9052
RFC 9420 The Messaging Layer Security (MLS) Protocol July 2023 Messaging Layer Security
RFC 9535 JSONPath February 2024 JSONPath
RFC 9580 OpenPGP July 2024 OpenPGP Obsoletes RFC 4880, RFC 5581, RFC 6637
RFC 9777 Multicast Listener Discovery Version 2 (MLDv2) for IPv6 March 2025 Multicast Listener Discovery Obsoletes RFC 3810

Topical list

Obsolete RFCs are indicated with struck-through text.

Topic Related RFCs
Address Resolution Protocol RFC 826
Blocks Extensible Exchange Protocol RFC 3080
Bidirectional Forwarding Detection RFC 5880, RFC 5881
BOOTP RFC 951
CRAM-MD5 RFC 2195
Date and Time on the Internet (ISO 8601) RFC 3339
DEFLATE RFC 1951
DISCARD RFC 863
Domain Name System RFC 1034, RFC 1035, RFC 2606, RFC 7871
Dynamic Delegation Discovery System RFC 2168, RFC 2915, RFC 3401, RFC 3402, RFC 3403, RFC 3404, RFC 3405
Dynamic Host Configuration Protocol RFC 1531, RFC 1541, RFC 2131, RFC 3315 (IPv6)
Extensible Messaging and Presence Protocol RFC 3920 RFC 3921 RFC 3922
ECHO protocol RFC 862
Fictitious domain name RFC 2606
File Transfer Protocol RFC 114, RFC 172, RFC 265, RFC 354, RFC 765, RFC 959, RFC 2228, RFC 4217
Frame Relay RFC 1294, RFC 1490, RFC 2427
Generic Security Services Application Program Interface RFC 1508, RFC 1509, RFC 1964, RFC 2078, RFC 2743, RFC 2744, RFC 2853
gzip RFC 1952
HyperText Transfer Protocol RFC 1945 (v 1.0), RFC 2616 (v 1.1), RFC 7230 (v 1.1), RFC 7231 (v 1.1), RFC 7232 (v 1.1), RFC 7233 (v 1.1), RFC 7234 (v 1.1), RFC 7235 (v 1.1)
Internet Control Message Protocol RFC 792
Internet Group Management Protocol RFC 966 (v 0), RFC 988 (v 0), RFC 1054 (v 1), 1112 (v 1), RFC 2236 (v 2), RFC 3376 (v 3)
Internet Key Exchange IKE RFC 2409, RFC 2407 (ISAKMP), RFC 2408 (ISAKMP), IKEv2 RFC 4306, IKEv2 RFC 4301, RFC 4310 (DNS)
Internet Message Access Protocol RFC 1176 (v 2), RFC 1730 (v 4), RFC 2060 (v 4r1), RFC 3501 (v 4r1)
Internet Protocol see IPv4 and IPv6
IP over Avian Carriers RFC 1149, RFC 2549
IPv4 RFC 760, RFC 790, RFC 791
IPv6 RFC 1883, RFC 2460, RFC 8200
IPv6 addressing RFC 2373, RFC 3513, RFC 4291
Internet Relay Chat RFC 1459, RFC 2810, RFC 2811, RFC 2812, RFC 2813
Internet Open Trading Protocol RFC 2801, RFC 3504, RFC 2802, RFC 2935, RFC 3538, RFC 3867
ISCSI RFC 3720, RFC 3783
Kerberos RFC 1964
Lightweight Directory Access Protocol RFC 1487, RFC 1777, RFC 2251, RFC 2252, RFC 2253, RFC 2254, RFC 2255, RFC 2256, RFC 4510, RFC 4511, RFC 4512, RFC 4513, RFC 4514, RFC 4515, RFC 4516, RFC 4517, RFC 4518, RFC 4519, RFC 4520, RFC 4521, RFC 4522, RFC 4523, RFC 4524, RFC 4525, RFC 4526, RFC 4527, RFC 4528, RFC 4529, RFC 4530, RFC 4531, RFC 4532, RFC 4533, RFC 4534
Microsoft Point-to-Point Encryption RFC 2118, RFC 3078
MIKEY RFC 3830, RFC 4650, RFC 4738, RFC 6043, RFC 6267, RFC 6509
MD5 RFC 1321
Multiprotocol Label Switching RFC 3031
Multipurpose Internet Mail Extensions RFC 2045 RFC 2046 RFC 2047 RFC 2049
Network address translation RFC 1631, RFC 2663, RFC 2993, RFC 3022, RFC 3027, RFC 3234, RFC 3489, RFC 4787, RFC 5389
Network File System RFC 1094, RFC 1813 (v.3), RFC 3010 (v.4), RFC 3530 (v.4), RFC 7530 (v.4)
Network News Transfer Protocol RFC 977, RFC 3977
Network Time Protocol RFC 1059 (v.1), RFC 1119 (v.2), RFC 1305 (v.3), RFC 5905 (v.4)
Open Shortest Path First RFC 1131 (v.1), RFC 1247 (v.2), RFC 1583 (v.2), RFC 2178 (v.2), RFC 2328, RFC 2740 (IPv6), RFC 5340 (IPv6)
Pretty Good Privacy RFC 1991, RFC 2440, RFC 4880
Protocol Independent Multicast RFC 2117, RFC 2362 (SM), RFC 4602 (SM)
Reverse Address Resolution Protocol RFC 903
QUIC RFC 9000
Post Office Protocol RFC 918 (v.1), RFC 937 (v.2), RFC 1081 (v.3), RFC 1225 (v.3), RFC 1460 (v.3), RFC 1725 (v.3), RFC 1939 (v.3)
RADIUS RFC 2058, RFC 2059, RFC 2138, RFC 2139, RFC 2865, RFC 2866, RFC 2867, RFC 2868, RFC 2869, RFC 3162 (IPv6)
Real-time Transport Protocol RFC 1889
Real Time Streaming Protocol RFC 2326
Routing Information Protocol RFC 1058 (v.1), RFC 1388 (v.2), RFC 1723 (v.2), RFC 2453 (v.2), RFC 2080 (v.ng)
Sender Policy Framework RFC 4408
Secure Shell-2 RFC 4251
Session Announcement Protocol RFC 2974
Session Description Protocol RFC 2327
Session Initiation Protocol RFC 3261
SHA hash functions RFC 3174, RFC 4634, RFC 6234
Simple Authentication and Security Layer RFC 2222, RFC 4422
Simple Mail Transfer Protocol,
Internet Message Format		 RFC 196, RFC 772, RFC 821, RFC 822, RFC 2821, RFC 2822, RFC 5321, RFC 5322
Simple Network Management Protocol RFC 1067, RFC 1098, RFC 1157 (v.1), RFC 1441 (v.2) RFC 2570 (v.3)
Stream Control Transmission Protocol RFC 2960, RFC 4960, RFC 3286
Tag URI scheme RFC 4151
TELNET RFC 15, RFC 854, RFC 855
Transmission Control Protocol RFC 675, RFC 793, RFC 9293
Transport Layer Security 1.0 RFC 2246
Trivial File Transfer Protocol RFC 783, RFC 1350
Usenet RFC 850, RFC 1036
Uniform Resource Identifier RFC 3986
User Datagram Protocol RFC 768
UTF-8 RFC 3629
zlib RFC 1950

References

  1. ↑ Internet Engineering Task Force. "RFC Index". https://www.ietf.org/download/rfc-index.txt. 



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