| 791 | Internet ProtocolJ. Postel | Internet Standard | September 1981 |
| 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 |
| 1918 | Address Allocation for Private InternetsY. Rekhter, B. Moskowitz, D. Karrenberg, G. J. de Groot, E. Lear | Best Current Practice | February 1996 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 3031 | Multiprotocol Label Switching ArchitectureE. Rosen, A. Viswanathan, R. Callon | Proposed Standard | January 2001 |
| 3597 | Handling of Unknown DNS Resource Record (RR) TypesA. Gustafsson | Proposed Standard | September 2003 |
| 3618 | Multicast Source Discovery Protocol (MSDP)B. Fenner, Ed., D. Meyer, Ed. | Experimental | October 2003 |
| 4033 | DNS Security Introduction and RequirementsR. Arends, R. Austein, M. Larson, D. Massey, S. Rose | Proposed Standard | March 2005 |
| 4423 | Host Identity Protocol (HIP) ArchitectureR. Moskowitz, P. Nikander · obsoleted by RFC 9063 | Informational | May 2006 |
| 4601 | Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)B. Fenner, M. Handley, H. Holbrook, I. Kouvelas · obsoleted by RFC 7761 | Proposed Standard | August 2006 |
| 4884 | Extended ICMP to Support Multi-Part MessagesR. Bonica, D. Gan, D. Tappan, C. Pignataro | Proposed Standard | April 2007 |
| 4941 | Privacy Extensions for Stateless Address Autoconfiguration in IPv6T. Narten, R. Draves, S. Krishnan · obsoleted by RFC 8981 | Draft Standard | September 2007 |
| 4960 | Stream Control Transmission ProtocolR. Stewart, Ed. · obsoleted by RFC 9260 | Proposed Standard | September 2007 |
| 4984 | Report from the IAB Workshop on Routing and AddressingD. Meyer, Ed., L. Zhang, Ed., K. Fall, Ed. | Informational | September 2007 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 2008 |
| 5395 | Domain Name System (DNS) IANA ConsiderationsD. Eastlake 3rd · obsoleted by RFC 6195 | Best Current Practice | November 2008 |
| 5741 | RFC Streams, Headers, and BoilerplatesL. Daigle, Ed., O. Kolkman, Ed., IAB · obsoleted by RFC 7841 | Informational | December 2009 |
| 5880 | Bidirectional Forwarding Detection (BFD)D. Katz, D. Ward | Proposed Standard | June 2010 |
| 5944 | IP Mobility Support for IPv4, RevisedC. Perkins, Ed. | Proposed Standard | November 2010 |
| 6115 | Recommendation for a Routing ArchitectureT. Li, Ed. | Informational | February 2011 |
| 6182 | Architectural Guidelines for Multipath TCP DevelopmentA. Ford, C. Raiciu, M. Handley, S. Barre, J. Iyengar | Informational | March 2011 |
| 6227 | Design Goals for Scalable Internet RoutingT. Li, Ed. | Informational | May 2011 |