| 8489 | Session Traversal Utilities for NAT (STUN)M. Petit-Huguenin, G. Salgueiro, J. Rosenberg, D. Wing, R. Mahy, P. Matthews | Proposed Standard | February 2020 |
| 5280 | Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileD. Cooper, S. Santesson, S. Farrell, S. Boeyen, R. Housley, W. Polk | Proposed Standard | May 2008 |
| 5272 | Certificate Management over CMS (CMC)J. Schaad, M. Myers · obsoleted by RFC 10002 | Proposed Standard | June 2008 |
| 4933 | Extensible Provisioning Protocol (EPP) Contact MappingS. Hollenbeck · obsoleted by RFC 5733 | Draft Standard | May 2007 |
| 4930 | Extensible Provisioning Protocol (EPP)S. Hollenbeck · obsoleted by RFC 5730 | Draft Standard | May 2007 |
| 4683 | Internet X.509 Public Key Infrastructure Subject Identification Method (SIM)J. Park, J. Lee, H. Lee, S. Park, T. Polk | Proposed Standard | October 2006 |
| 4630 | Update to DirectoryString Processing in the Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileR. Housley, S. Santesson · obsoleted by RFC 5280 | Proposed Standard | August 2006 |
| 4211 | Internet X.509 Public Key Infrastructure Certificate Request Message Format (CRMF)J. Schaad | Proposed Standard | September 2005 |
| 3795 | Survey of IPv4 Addresses in Currently Deployed IETF Application Area Standards Track and Experimental DocumentsR. Sofia, P. Nesser, II | Informational | June 2004 |
| 3748 | Extensible Authentication Protocol (EAP)B. Aboba, L. Blunk, J. Vollbrecht, J. Carlson, H. Levkowetz, Ed. | Proposed Standard | June 2004 |
| 3733 | Extensible Provisioning Protocol (EPP) Contact MappingS. Hollenbeck · obsoleted by RFC 4933 | Proposed Standard | March 2004 |
| 3730 | Extensible Provisioning Protocol (EPP)S. Hollenbeck · obsoleted by RFC 4930 | Proposed Standard | March 2004 |
| 3720 | Internet Small Computer Systems Interface (iSCSI)J. Satran, K. Meth, C. Sapuntzakis, M. Chadalapaka, E. Zeidner · obsoleted by RFC 7143 | Proposed Standard | April 2004 |
| 3712 | Lightweight Directory Access Protocol (LDAP): Schema for Printer ServicesP. Fleming, I. McDonald · obsoleted by RFC 7612 | Informational | February 2004 |
| 3660 | Basic Media Gateway Control Protocol (MGCP) PackagesB. Foster, F. Andreasen | Informational | December 2003 |
| 3651 | Handle System Namespace and Service DefinitionS. Sun, S. Reilly, L. Lannom | Informational | November 2003 |
| 3629 | UTF-8, a transformation format of ISO 10646F. Yergeau | Internet Standard | November 2003 |
| 3588 | Diameter Base ProtocolP. Calhoun, J. Loughney, E. Guttman, G. Zorn, J. Arkko · obsoleted by RFC 6733 | Proposed Standard | September 2003 |
| 3579 | RADIUS (Remote Authentication Dial In User Service) Support For Extensible Authentication Protocol (EAP)B. Aboba, P. Calhoun | Informational | September 2003 |
| 3550 | RTP: A Transport Protocol for Real-Time ApplicationsH. Schulzrinne, S. Casner, R. Frederick, V. Jacobson | Internet Standard | July 2003 |
| 3546 | Transport Layer Security (TLS) ExtensionsS. Blake-Wilson, M. Nystrom, D. Hopwood, J. Mikkelsen, T. Wright · obsoleted by RFC 4366 | Proposed Standard | June 2003 |
| 3536 | Terminology Used in Internationalization in the IETFP. Hoffman · obsoleted by RFC 6365 | Informational | May 2003 |
| 3530 | Network File System (NFS) version 4 ProtocolS. Shepler, B. Callaghan, D. Robinson, R. Thurlow, C. Beame, M. Eisler, D. Noveck · obsoleted by RFC 7530 | Proposed Standard | April 2003 |
| 3520 | Session Authorization Policy ElementL-N. Hamer, B. Gage, B. Kosinski, H. Shieh | Proposed Standard | April 2003 |
| 3485 | The Session Initiation Protocol (SIP) and Session Description Protocol (SDP) Static Dictionary for Signaling Compression (SigComp)M. Garcia-Martin, C. Bormann, J. Ott, R. Price, A. B. Roach | Proposed Standard | March 2003 |
| 3413 | Simple Network Management Protocol (SNMP) ApplicationsD. Levi, P. Meyer, B. Stewart | Internet Standard | December 2002 |
| 3411 | An Architecture for Describing Simple Network Management Protocol (SNMP) Management FrameworksD. Harrington, R. Presuhn, B. Wijnen | Internet Standard | December 2002 |
| 3383 | Internet Assigned Numbers Authority (IANA) Considerations for the Lightweight Directory Access Protocol (LDAP)K. Zeilenga · obsoleted by RFC 4520 | Best Current Practice | September 2002 |
| 3320 | Signaling Compression (SigComp)R. Price, C. Bormann, J. Christoffersson, H. Hannu, Z. Liu, J. Rosenberg | Proposed Standard | January 2003 |
| 3318 | Framework Policy Information BaseR. Sahita, Ed., S. Hahn, K. Chan, K. McCloghrie | Historic | March 2003 |
| 3280 | Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) ProfileR. Housley, W. Polk, W. Ford, D. Solo · obsoleted by RFC 5280 | Proposed Standard | May 2002 |
| 3275 | (Extensible Markup Language) XML-Signature Syntax and ProcessingD. Eastlake 3rd, J. Reagle, D. Solo | Draft Standard | March 2002 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3253 | Versioning Extensions to WebDAV (Web Distributed Authoring and Versioning)G. Clemm, J. Amsden, T. Ellison, C. Kaler, J. Whitehead | Proposed Standard | March 2002 |
| 3252 | Binary Lexical Octet Ad-hoc TransportH. Kennedy | Informational | 1 April 2002 |
| 3076 | Canonical XML Version 1.0J. Boyer | Informational | March 2001 |
| 3075 | XML-Signature Syntax and ProcessingD. Eastlake 3rd, J. Reagle, D. Solo · obsoleted by RFC 3275 | Proposed Standard | March 2001 |
| 3072 | Structured Data Exchange Format (SDXF)M. Wildgrube | Informational | March 2001 |
| 3060 | Policy Core Information Model -- Version 1 SpecificationB. Moore, E. Ellesson, J. Strassner, A. Westerinen | Proposed Standard | February 2001 |
| 3023 | XML Media TypesM. Murata, S. St. Laurent, D. Kohn · obsoleted by RFC 7303 | Proposed Standard | January 2001 |
| 3010 | NFS version 4 ProtocolS. Shepler, B. Callaghan, D. Robinson, R. Thurlow, C. Beame, M. Eisler, D. Noveck · obsoleted by RFC 3530 | Proposed Standard | December 2000 |
| 2965 | HTTP State Management MechanismD. Kristol, L. Montulli · obsoleted by RFC 6265 | Historic | October 2000 |
| 2957 | The application/whoispp-query Content-TypeL. Daigle, P. Faltstrom | Informational | October 2000 |
| 2911 | Internet Printing Protocol/1.1: Model and SemanticsT. Hastings, Ed., R. Herriot, R. deBry, S. Isaacson, P. Powell · obsoleted by RFC 8011 | Proposed Standard | September 2000 |
| 2847 | LIPKEY - A Low Infrastructure Public Key Mechanism Using SPKMM. Eisler | Proposed Standard | June 2000 |
| 2808 | The SecurID(r) SASL MechanismM. Nystrom | Informational | April 2000 |
| 2788 | Network Services Monitoring MIBN. Freed, S. Kille | Proposed Standard | March 2000 |
| 2781 | UTF-16, an encoding of ISO 10646P. Hoffman, F. Yergeau | Informational | February 2000 |
| 2720 | Traffic Flow Measurement: Meter MIBN. Brownlee | Proposed Standard | October 1999 |
| 2718 | Guidelines for new URL SchemesL. Masinter, H. Alvestrand, D. Zigmond, R. Petke · obsoleted by RFC 4395 | Informational | November 1999 |
| 2707 | Job Monitoring MIB - V1.0R. Bergman, T. Hastings, S. Isaacson, H. Lewis | Informational | November 1999 |
| 2640 | Internationalization of the File Transfer ProtocolB. Curtin | Proposed Standard | July 1999 |
| 2634 | Enhanced Security Services for S/MIMEP. Hoffman, Ed. | Proposed Standard | June 1999 |
| 2624 | NFS Version 4 Design ConsiderationsS. Shepler | Informational | 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 |
| 2614 | An API for Service LocationJ. Kempf, E. Guttman | Informational | June 1999 |
| 2610 | DHCP Options for Service Location ProtocolC. Perkins, E. Guttman | Proposed Standard | June 1999 |
| 2609 | Service Templates and Service: SchemesE. Guttman, C. Perkins, J. Kempf | Proposed Standard | June 1999 |
| 2608 | Service Location Protocol, Version 2E. Guttman, C. Perkins, J. Veizades, M. Day | Proposed Standard | June 1999 |
| 2595 | Using TLS with IMAP, POP3 and ACAPC. Newman | Proposed Standard | June 1999 |
| 2573 | SNMP ApplicationsD. Levi, P. Meyer, B. Stewart · obsoleted by RFC 3413 | Draft Standard | April 1999 |
| 2571 | An Architecture for Describing SNMP Management FrameworksB. Wijnen, D. Harrington, R. Presuhn · obsoleted by RFC 3411 | Draft Standard | April 1999 |
| 2566 | Internet Printing Protocol/1.0: Model and SemanticsR. deBry, T. Hastings, R. Herriot, S. Isaacson, P. Powell · obsoleted by RFC 2911 | Experimental | April 1999 |
| 2543 | SIP: Session Initiation ProtocolM. Handley, H. Schulzrinne, E. Schooler, J. Rosenberg · obsoleted by RFC 3261, RFC 3262, RFC 3263, RFC 3264, RFC 3265 | Proposed Standard | March 1999 |
| 2518 | HTTP Extensions for Distributed Authoring -- WEBDAVY. Goland, E. Whitehead, A. Faizi, S. Carter, D. Jensen · obsoleted by RFC 4918 | Proposed Standard | February 1999 |
| 2459 | Internet X.509 Public Key Infrastructure Certificate and CRL ProfileR. Housley, W. Ford, W. Polk, D. Solo · obsoleted by RFC 3280 | Proposed Standard | January 1999 |
| 2445 | Internet Calendaring and Scheduling Core Object Specification (iCalendar)F. Dawson, D. Stenerson · obsoleted by RFC 5545 | Proposed Standard | November 1998 |
| 2444 | The One-Time-Password SASL MechanismC. Newman | Proposed Standard | October 1998 |
| 2440 | OpenPGP Message FormatJ. Callas, L. Donnerhacke, H. Finney, R. Thayer · obsoleted by RFC 4880 | Proposed Standard | November 1998 |
| 2396 | Uniform Resource Identifiers (URI): Generic SyntaxT. Berners-Lee, R. Fielding, L. Masinter · obsoleted by RFC 3986 | Draft Standard | August 1998 |
| 2384 | POP URL SchemeR. Gellens | Proposed Standard | August 1998 |
| 2376 | XML Media TypesE. Whitehead, M. Murata · obsoleted by RFC 3023 | Informational | July 1998 |
| 2360 | Guide for Internet Standards WritersG. Scott | Best Current Practice | June 1998 |
| 2326 | Real Time Streaming Protocol (RTSP)H. Schulzrinne, A. Rao, R. Lanphier · obsoleted by RFC 7826 | Proposed Standard | April 1998 |