| 768 | User Datagram ProtocolJ. Postel | Internet Standard | August 1980 |
| 791 | Internet ProtocolJ. Postel | Internet Standard | September 1981 |
| 792 | Internet Control Message ProtocolJ. Postel | Internet Standard | September 1981 |
| 793 | Transmission Control ProtocolJ. Postel · obsoleted by RFC 9293 | Internet Standard | September 1981 |
| 1108 | U.S. Department of Defense Security Options for the Internet ProtocolS. Kent | Historic | November 1991 |
| 1112 | Host extensions for IP multicastingS.E. Deering | Internet Standard | August 1989 |
| 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 |
| 1385 | EIP: The Extended Internet ProtocolZ. Wang · obsoleted by RFC 6814 | Historic | November 1992 |
| 1812 | Requirements for IP Version 4 RoutersF. Baker, Ed. | Proposed Standard | June 1995 |
| 1930 | Guidelines for creation, selection, and registration of an Autonomous System (AS)J. Hawkinson, T. Bates | Best Current Practice | March 1996 |
| 2113 | IP Router Alert OptionD. Katz | Proposed Standard | February 1997 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2434 | Guidelines for Writing an IANA Considerations Section in RFCsT. Narten, H. Alvestrand · obsoleted by RFC 5226 | Best Current Practice | October 1998 |
| 2460 | Internet Protocol, Version 6 (IPv6) SpecificationS. Deering, R. Hinden · obsoleted by RFC 8200 | Draft Standard | December 1998 |
| 2578 | Structure of Management Information Version 2 (SMIv2)K. McCloghrie, Ed., D. Perkins, Ed., J. Schoenwaelder, Ed. | Internet Standard | April 1999 |
| 2629 | Writing I-Ds and RFCs using XMLM. Rose · obsoleted by RFC 7749 | Informational | June 1999 |
| 2675 | IPv6 JumbogramsD. Borman, S. Deering, R. Hinden | Proposed Standard | August 1999 |
| 2863 | The Interfaces Group MIBK. McCloghrie, F. Kastenholz | Draft Standard | June 2000 |
| 3031 | Multiprotocol Label Switching ArchitectureE. Rosen, A. Viswanathan, R. Callon | Proposed Standard | January 2001 |
| 3032 | MPLS Label Stack EncodingE. Rosen, D. Tappan, G. Fedorkow, Y. Rekhter, D. Farinacci, T. Li, A. Conta | Proposed Standard | January 2001 |
| 3193 | Securing L2TP using IPsecB. Patel, B. Aboba, W. Dixon, G. Zorn, S. Booth | Proposed Standard | November 2001 |
| 3234 | Middleboxes: Taxonomy and IssuesB. Carpenter, S. Brim | Informational | February 2002 |
| 3260 | New Terminology and Clarifications for DiffservD. Grossman | Informational | April 2002 |
| 3270 | Multi-Protocol Label Switching (MPLS) Support of Differentiated ServicesF. Le Faucheur, Ed., L. Wu, B. Davie, S. Davari, P. Vaananen, R. Krishnan, P. Cheval, J. Heinanen | Proposed Standard | May 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 |
| 3444 | On the Difference between Information Models and Data ModelsA. Pras, J. Schoenwaelder | Informational | January 2003 |
| 3688 | The IETF XML RegistryM. Mealling | Best Current Practice | January 2004 |
| 3692 | Assigning Experimental and Testing Numbers Considered UsefulT. Narten | Best Current Practice | January 2004 |
| 3954 | Cisco Systems NetFlow Services Export Version 9B. Claise, Ed. | Informational | October 2004 |
| 4271 | A Border Gateway Protocol 4 (BGP-4)Y. Rekhter, Ed., T. Li, Ed., S. Hares, Ed. | Draft Standard | January 2006 |
| 4291 | IP Version 6 Addressing ArchitectureR. Hinden, S. Deering | Draft Standard | February 2006 |
| 4302 | IP Authentication HeaderS. Kent | Proposed Standard | December 2005 |
| 4303 | IP Encapsulating Security Payload (ESP)S. Kent | Proposed Standard | December 2005 |
| 4364 | BGP/MPLS IP Virtual Private Networks (VPNs)E. Rosen, Y. Rekhter | Proposed Standard | February 2006 |
| 4382 | MPLS/BGP Layer 3 Virtual Private Network (VPN) Management Information BaseT. Nadeau, Ed., H. van der Linde, Ed. | Proposed Standard | February 2006 |
| 4443 | Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) SpecificationA. Conta, S. Deering, M. Gupta, Ed. | Internet Standard | March 2006 |
| 4960 | Stream Control Transmission ProtocolR. Stewart, Ed. · obsoleted by RFC 9260 | Proposed Standard | September 2007 |
| 5036 | LDP SpecificationL. Andersson, Ed., I. Minei, Ed., B. Thomas, Ed. | Draft Standard | October 2007 |
| 5101 | Specification of the IP Flow Information Export (IPFIX) Protocol for the Exchange of IP Traffic Flow InformationB. Claise, Ed. · obsoleted by RFC 7011 | Proposed Standard | January 2008 |