| 791 | Internet ProtocolJ. Postel | Internet Standard | September 1981 |
| 793 | Transmission Control ProtocolJ. Postel · obsoleted by RFC 9293 | Internet Standard | September 1981 |
| 1122 | Requirements for Internet Hosts - Communication LayersR. Braden, Ed. | Internet Standard | October 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 |
| 1323 | TCP Extensions for High PerformanceV. Jacobson, R. Braden, D. Borman · obsoleted by RFC 7323 | Proposed Standard | May 1992 |
| 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 |
| 2212 | Specification of Guaranteed Quality of ServiceS. Shenker, C. Partridge, R. Guerin | Proposed Standard | September 1997 |
| 2402 | IP Authentication HeaderS. Kent, R. Atkinson · obsoleted by RFC 4302, RFC 4305 | Proposed Standard | November 1998 |
| 2406 | IP Encapsulating Security Payload (ESP)S. Kent, R. Atkinson · obsoleted by RFC 4303, RFC 4305 | Proposed Standard | November 1998 |
| 2507 | IP Header CompressionM. Degermark, B. Nordgren, S. Pink | Proposed Standard | February 1999 |
| 2525 | Known TCP Implementation ProblemsV. Paxson, M. Allman, S. Dawson, W. Fenner, J. Griner, I. Heavens, K. Lahey, J. Semke, B. Volz | Informational | March 1999 |
| 2581 | TCP Congestion ControlM. Allman, V. Paxson, W. Stevens · obsoleted by RFC 5681 | Proposed Standard | April 1999 |
| 2686 | The Multi-Class Extension to Multi-Link PPPC. Bormann | Proposed Standard | September 1999 |
| 2760 | Ongoing TCP Research Related to SatellitesM. Allman, Ed., S. Dawkins, D. Glover, J. Griner, D. Tran, T. Henderson, J. Heidemann, J. Touch, H. Kruse, S. Ostermann, K. Scott, J. Semke | Informational | February 2000 |
| 2784 | Generic Routing Encapsulation (GRE)D. Farinacci, T. Li, S. Hanks, D. Meyer, P. Traina | Proposed Standard | March 2000 |
| 2794 | Mobile IP Network Access Identifier Extension for IPv4P. Calhoun, C. Perkins | Proposed Standard | March 2000 |
| 2988 | Computing TCP's Retransmission TimerV. Paxson, M. Allman · obsoleted by RFC 6298 | Proposed Standard | November 2000 |
| 2998 | A Framework for Integrated Services Operation over Diffserv NetworksY. Bernet, P. Ford, R. Yavatkar, F. Baker, L. Zhang, M. Speer, R. Braden, B. Davie, J. Wroclawski, E. Felstaine | Informational | November 2000 |
| 3077 | A Link-Layer Tunneling Mechanism for Unidirectional LinksE. Duros, W. Dabbous, H. Izumiyama, N. Fujii, Y. Zhang | Proposed Standard | March 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 |
| 3135 | Performance Enhancing Proxies Intended to Mitigate Link-Related DegradationsJ. Border, M. Kojo, J. Griner, G. Montenegro, Z. Shelby | Informational | June 2001 |
| 3150 | End-to-end Performance Implications of Slow LinksS. Dawkins, G. Montenegro, M. Kojo, V. Magret | Best Current Practice | July 2001 |
| 3168 | The Addition of Explicit Congestion Notification (ECN) to IPK. Ramakrishnan, S. Floyd, D. Black | Proposed Standard | September 2001 |