| 768 | User Datagram ProtocolJ. Postel | Internet Standard | August 1980 |
| 791 | Internet ProtocolJ. Postel | Internet Standard | September 1981 |
| 793 | Transmission Control ProtocolJ. Postel · obsoleted by RFC 9293 | Internet Standard | September 1981 |
| 826 | An Ethernet Address Resolution Protocol: Or Converting Network Protocol Addresses to 48.bit Ethernet Address for Transmission on Ethernet HardwareD. Plummer | Internet Standard | November 1982 |
| 1071 | Computing the Internet checksumR.T. Braden, D.A. Borman, C. Partridge | Informational | September 1988 |
| 1112 | Host extensions for IP multicastingS.E. Deering | Internet Standard | August 1989 |
| 1144 | Compressing TCP/IP Headers for Low-Speed Serial LinksV. Jacobson | Proposed Standard | February 1990 |
| 1191 | Path MTU discoveryJ. Mogul, S. Deering | Draft Standard | November 1990 |
| 1332 | The PPP Internet Protocol Control Protocol (IPCP)G. McGregor | Proposed Standard | May 1992 |
| 1435 | IESG Advice from Experience with Path MTU DiscoveryS. Knowles | Informational | March 1993 |
| 1633 | Integrated Services in the Internet Architecture: an OverviewR. Braden, D. Clark, S. Shenker | Informational | June 1994 |
| 1661 | The Point-to-Point Protocol (PPP)W. Simpson, Ed. | Internet Standard | July 1994 |
| 1662 | PPP in HDLC-like FramingW. Simpson, Ed. | Internet Standard | July 1994 |
| 1750 | Randomness Recommendations for SecurityD. Eastlake 3rd, S. Crocker, J. Schiller · obsoleted by RFC 4086 | Informational | December 1994 |
| 1812 | Requirements for IP Version 4 RoutersF. Baker, Ed. | Proposed Standard | June 1995 |
| 1939 | Post Office Protocol - Version 3J. Myers, M. Rose | Internet Standard | May 1996 |
| 1981 | Path MTU Discovery for IP version 6J. McCann, S. Deering, J. Mogul · obsoleted by RFC 8201 | Draft Standard | August 1996 |
| 1991 | PGP Message Exchange FormatsD. Atkins, W. Stallings, P. Zimmermann · obsoleted by RFC 4880 | Informational | August 1996 |
| 2018 | TCP Selective Acknowledgment OptionsM. Mathis, J. Mahdavi, S. Floyd, A. Romanow | Proposed Standard | October 1996 |
| 2131 | Dynamic Host Configuration ProtocolR. Droms | Draft Standard | March 1997 |
| 2205 | Resource ReSerVation Protocol (RSVP) -- Version 1 Functional SpecificationR. Braden, Ed., L. Zhang, S. Berson, S. Herzog, S. Jamin | Proposed Standard | September 1997 |
| 2208 | Resource ReSerVation Protocol (RSVP) -- Version 1 Applicability Statement Some Guidelines on DeploymentA. Mankin, Ed., F. Baker, B. Braden, S. Bradner, M. O'Dell, A. Romanow, A. Weinrib, L. Zhang | Informational | September 1997 |
| 2210 | The Use of RSVP with IETF Integrated ServicesJ. Wroclawski | Proposed Standard | September 1997 |
| 2211 | Specification of the Controlled-Load Network Element ServiceJ. Wroclawski | Proposed Standard | September 1997 |
| 2212 | Specification of Guaranteed Quality of ServiceS. Shenker, C. Partridge, R. Guerin | Proposed Standard | September 1997 |
| 2246 | The TLS Protocol Version 1.0T. Dierks, C. Allen · obsoleted by RFC 4346 | Historic | January 1999 |
| 2309 | Recommendations on Queue Management and Congestion Avoidance in the InternetB. Braden, D. Clark, J. Crowcroft, B. Davie, S. Deering, D. Estrin, S. Floyd, V. Jacobson, G. Minshall, C. Partridge, L. Peterson, K. Ramakrishnan, S. Shenker, J. Wroclawski, L. Zhang · obsoleted by RFC 7567 | Informational | April 1998 |
| 2322 | Management of IP numbers by peg-dhcpK. van den Hout, A. Koopal, R. van Mook | Informational | 1 April 1998 |
| 2328 | OSPF Version 2J. Moy | Internet Standard | April 1998 |
| 2332 | NBMA Next Hop Resolution Protocol (NHRP)J. Luciani, D. Katz, D. Piscitello, B. Cole, N. Doraswamy | Proposed Standard | April 1998 |
| 2364 | PPP Over AAL5G. Gross, M. Kaycee, A. Li, A. Malis, J. Stephens | Proposed Standard | July 1998 |
| 2394 | IP Payload Compression Using DEFLATER. Pereira | Informational | December 1998 |
| 2395 | IP Payload Compression Using LZSR. Friend, R. Monsour | Informational | December 1998 |
| 2401 | Security Architecture for the Internet ProtocolS. Kent, R. Atkinson · obsoleted by RFC 4301 | Proposed Standard | November 1998 |
| 2406 | IP Encapsulating Security Payload (ESP)S. Kent, R. Atkinson · obsoleted by RFC 4303, RFC 4305 | Proposed Standard | November 1998 |
| 2440 | OpenPGP Message FormatJ. Callas, L. Donnerhacke, H. Finney, R. Thayer · obsoleted by RFC 4880 | Proposed Standard | November 1998 |
| 2460 | Internet Protocol, Version 6 (IPv6) SpecificationS. Deering, R. Hinden · obsoleted by RFC 8200 | Draft Standard | December 1998 |
| 2461 | Neighbor Discovery for IP Version 6 (IPv6)T. Narten, E. Nordmark, W. Simpson · obsoleted by RFC 4861 | Draft Standard | December 1998 |
| 2474 | Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 HeadersK. Nichols, S. Blake, F. Baker, D. Black | Proposed Standard | December 1998 |
| 2475 | An Architecture for Differentiated ServicesS. Blake, D. Black, M. Carlson, E. Davies, Z. Wang, W. Weiss | Informational | December 1998 |
| 2507 | IP Header CompressionM. Degermark, B. Nordgren, S. Pink | Proposed Standard | February 1999 |
| 2508 | Compressing IP/UDP/RTP Headers for Low-Speed Serial LinksS. Casner, V. Jacobson | Proposed Standard | February 1999 |
| 2581 | TCP Congestion ControlM. Allman, V. Paxson, W. Stevens · obsoleted by RFC 5681 | Proposed Standard | April 1999 |
| 2582 | The NewReno Modification to TCP's Fast Recovery AlgorithmS. Floyd, T. Henderson · obsoleted by RFC 3782 | Experimental | April 1999 |
| 2597 | Assured Forwarding PHB GroupJ. Heinanen, F. Baker, W. Weiss, J. Wroclawski | Proposed Standard | June 1999 |
| 2598 | An Expedited Forwarding PHBV. Jacobson, K. Nichols, K. Poduri · obsoleted by RFC 3246 | Proposed Standard | June 1999 |
| 2616 | Hypertext Transfer Protocol -- HTTP/1.1R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Masinter, P. Leach, T. Berners-Lee · obsoleted by RFC 7230, RFC 7231, RFC 7232, RFC 7233, RFC 7234, RFC 7235 | Draft Standard | June 1999 |
| 2630 | Cryptographic Message SyntaxR. Housley · obsoleted by RFC 3369, RFC 3370 | Proposed Standard | June 1999 |
| 2631 | Diffie-Hellman Key Agreement MethodE. Rescorla | Proposed Standard | June 1999 |
| 2632 | S/MIME Version 3 Certificate HandlingB. Ramsdell, Ed. · obsoleted by RFC 3850 | Proposed Standard | June 1999 |
| 2633 | S/MIME Version 3 Message SpecificationB. Ramsdell, Ed. · obsoleted by RFC 3851 | Proposed Standard | June 1999 |
| 2634 | Enhanced Security Services for S/MIMEP. Hoffman, Ed. | Proposed Standard | June 1999 |
| 2684 | Multiprotocol Encapsulation over ATM Adaptation Layer 5D. Grossman, J. Heinanen | Proposed Standard | September 1999 |
| 2686 | The Multi-Class Extension to Multi-Link PPPC. Bormann | Proposed Standard | September 1999 |
| 2687 | PPP in a Real-time Oriented HDLC-like FramingC. Bormann | Proposed Standard | September 1999 |
| 2689 | Providing Integrated Services over Low-bitrate LinksC. Bormann | Informational | September 1999 |
| 2710 | Multicast Listener Discovery (MLD) for IPv6S. Deering, W. Fenner, B. Haberman | Proposed Standard | October 1999 |
| 2784 | Generic Routing Encapsulation (GRE)D. Farinacci, T. Li, S. Hanks, D. Meyer, P. Traina | Proposed Standard | March 2000 |
| 2865 | Remote Authentication Dial In User Service (RADIUS)C. Rigney, S. Willens, A. Rubens, W. Simpson | Draft Standard | June 2000 |
| 2914 | Congestion Control PrinciplesS. Floyd | Best Current Practice | September 2000 |
| 2923 | TCP Problems with Path MTU DiscoveryK. Lahey | Informational | September 2000 |
| 2988 | Computing TCP's Retransmission TimerV. Paxson, M. Allman · obsoleted by RFC 6298 | Proposed Standard | November 2000 |
| 2990 | Next Steps for the IP QoS ArchitectureG. Huston | Informational | November 2000 |
| 3048 | Reliable Multicast Transport Building Blocks for One-to-Many Bulk-Data TransferB. Whetten, L. Vicisano, R. Kermode, M. Handley, S. Floyd, M. Luby | Informational | January 2001 |
| 3095 | RObust Header Compression (ROHC): Framework and four profiles: RTP, UDP, ESP, and uncompressedC. Bormann, C. Burmeister, M. Degermark, H. Fukushima, H. Hannu, L-E. Jonsson, R. Hakenberg, T. Koren, K. Le, Z. Liu, A. Martensson, A. Miyazaki, K. Svanbro, T. Wiebke, T. Yoshimura, H. Zheng | Proposed Standard | July 2001 |
| 3096 | Requirements for robust IP/UDP/RTP header compressionM. Degermark, Ed. | Informational | July 2001 |
| 3150 | End-to-end Performance Implications of Slow LinksS. Dawkins, G. Montenegro, M. Kojo, V. Magret | Best Current Practice | July 2001 |
| 3155 | End-to-end Performance Implications of Links with ErrorsS. Dawkins, G. Montenegro, M. Kojo, V. Magret, N. Vaidya | Best Current Practice | August 2001 |
| 3168 | The Addition of Explicit Congestion Notification (ECN) to IPK. Ramakrishnan, S. Floyd, D. Black | Proposed Standard | September 2001 |
| 3173 | IP Payload Compression Protocol (IPComp)A. Shacham, B. Monsour, R. Pereira, M. Thomas | Proposed Standard | September 2001 |
| 3246 | An Expedited Forwarding PHB (Per-Hop Behavior)B. Davie, A. Charny, J.C.R. Bennet, K. Benson, J.Y. Le Boudec, W. Courtney, S. Davari, V. Firoiu, D. Stiliadis | Proposed Standard | March 2002 |
| 3248 | A Delay Bound alternative revision of RFC 2598G. Armitage, B. Carpenter, A. Casati, J. Crowcroft, J. Halpern, B. Kumar, J. Schnizlein | Informational | March 2002 |
| 3344 | IP Mobility Support for IPv4C. Perkins, Ed. · obsoleted by RFC 5944 | Proposed Standard | August 2002 |
| 3366 | Advice to link designers on link Automatic Repeat reQuest (ARQ)G. Fairhurst, L. Wood | Best Current Practice | September 2002 |
| 3376 | Internet Group Management Protocol, Version 3B. Cain, S. Deering, I. Kouvelas, B. Fenner, A. Thyagarajan · obsoleted by RFC 9776 | Proposed Standard | October 2002 |
| 3449 | TCP Performance Implications of Network Path AsymmetryH. Balakrishnan, V. Padmanabhan, G. Fairhurst, M. Sooriyabandara | Best Current Practice | December 2002 |
| 3450 | Asynchronous Layered Coding (ALC) Protocol InstantiationM. Luby, J. Gemmell, L. Vicisano, L. Rizzo, J. Crowcroft · obsoleted by RFC 5775 | Experimental | December 2002 |
| 3451 | Layered Coding Transport (LCT) Building BlockM. Luby, J. Gemmell, L. Vicisano, L. Rizzo, M. Handley, J. Crowcroft · obsoleted by RFC 5651 | Experimental | December 2002 |
| 3452 | Forward Error Correction (FEC) Building BlockM. Luby, L. Vicisano, J. Gemmell, L. Rizzo, M. Handley, J. Crowcroft · obsoleted by RFC 5052, RFC 5445 | Experimental | December 2002 |
| 3453 | The Use of Forward Error Correction (FEC) in Reliable MulticastM. Luby, L. Vicisano, J. Gemmell, L. Rizzo, M. Handley, J. Crowcroft | Informational | December 2002 |
| 3488 | Cisco Systems Router-port Group Management Protocol (RGMP)I. Wu, T. Eckert | Informational | March 2003 |
| 3501 | INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1M. Crispin · obsoleted by RFC 9051 | Proposed Standard | March 2003 |
| 3828 | The Lightweight User Datagram Protocol (UDP-Lite)L-A. Larzon, M. Degermark, S. Pink, L-E. Jonsson, Ed., G. Fairhurst, Ed. | Proposed Standard | July 2004 |