| 1 | Host SoftwareS. Crocker | Unknown | April 1969 |
| 698 | Telnet extended ASCII optionT. Mock · obsoleted by RFC 5198 | Proposed Standard | July 1975 |
| 726 | Remote Controlled Transmission and Echoing Telnet optionJ. Postel, D. Crocker | Proposed Standard | March 1977 |
| 727 | Telnet logout optionM.R. Crispin | Proposed Standard | April 1977 |
| 735 | Revised Telnet byte macro optionD. Crocker, R.H. Gumpertz | Proposed Standard | November 1977 |
| 736 | Telnet SUPDUP optionM.R. Crispin | Proposed Standard | October 1977 |
| 749 | Telnet SUPDUP-Output optionB. Greenberg | Proposed Standard | September 1978 |
| 779 | Telnet send-location optionE. Killian | Proposed Standard | April 1981 |
| 822 | STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGESD. Crocker · obsoleted by RFC 2822 | Internet Standard | August 1982 |
| 854 | Telnet Protocol SpecificationJ. Postel, J.K. Reynolds | Internet Standard | May 1983 |
| 855 | Telnet Option SpecificationsJ. Postel, J.K. Reynolds | Internet Standard | May 1983 |
| 856 | Telnet Binary TransmissionJ. Postel, J. Reynolds | Internet Standard | May 1983 |
| 857 | Telnet Echo OptionJ. Postel, J. Reynolds | Internet Standard | May 1983 |
| 858 | Telnet Suppress Go Ahead OptionJ. Postel, J. Reynolds | Internet Standard | May 1983 |
| 859 | Telnet Status OptionJ. Postel, J. Reynolds | Internet Standard | May 1983 |
| 860 | Telnet Timing Mark OptionJ. Postel, J. Reynolds | Internet Standard | May 1983 |
| 861 | Telnet Extended Options: List OptionJ. Postel, J. Reynolds | Internet Standard | May 1983 |
| 862 | Echo ProtocolJ. Postel | Internet Standard | May 1983 |
| 863 | Discard ProtocolJ. Postel | Internet Standard | May 1983 |
| 864 | Character Generator ProtocolJ. Postel | Internet Standard | May 1983 |
| 865 | Quote of the Day ProtocolJ. Postel | Internet Standard | May 1983 |
| 866 | Active usersJ. Postel | Internet Standard | May 1983 |
| 867 | Daytime ProtocolJ. Postel | Internet Standard | May 1983 |
| 868 | Time ProtocolJ. Postel, K. Harrenstien | Internet Standard | May 1983 |
| 885 | Telnet end of record optionJ. Postel | Proposed Standard | December 1983 |
| 887 | Resource Location ProtocolM. Accetta | Experimental | December 1983 |
| 909 | Loader Debugger ProtocolC. Welles, W. Milliken | Experimental | July 1984 |
| 927 | TACACS user identification Telnet optionB.A. Anderson | Proposed Standard | December 1984 |
| 933 | Output marking Telnet optionS. Silverman | Proposed Standard | January 1985 |
| 946 | Telnet terminal location number optionR. Nedved | Proposed Standard | May 1985 |
| 954 | NICNAME/WHOISK. Harrenstien, M.K. Stahl, E.J. Feinler · obsoleted by RFC 3912 | Draft Standard | October 1985 |
| 959 | File Transfer ProtocolJ. Postel, J. Reynolds | Internet Standard | October 1985 |
| 977 | Network News Transfer ProtocolB. Kantor, P. Lapsley · obsoleted by RFC 3977 | Proposed Standard | February 1986 |
| 1034 | Domain names - concepts and facilitiesP. Mockapetris | Internet Standard | November 1987 |
| 1041 | Telnet 3270 regime optionY. Rekhter | Historic | January 1988 |
| 1043 | Telnet Data Entry Terminal option: DODIIS implementationA. Yasuda, T. Thompson | Proposed Standard | February 1988 |
| 1053 | Telnet X.3 PAD optionS. Levy, T. Jacobson | Historic | April 1988 |
| 1073 | Telnet window size optionD. Waitzman | Proposed Standard | October 1988 |
| 1079 | Telnet terminal speed optionC.L. Hedrick | Proposed Standard | December 1988 |
| 1091 | Telnet terminal-type optionJ. VanBokkelen | Proposed Standard | February 1989 |
| 1096 | Telnet X display location optionG.A. Marcy | Proposed Standard | March 1989 |
| 1123 | Requirements for Internet Hosts - Application and SupportR. Braden, Ed. | Internet Standard | October 1989 |
| 1143 | The Q Method of Implementing TELNET Option NegotiationD.J. Bernstein | Experimental | February 1990 |
| 1153 | Digest message formatF.J. Wancho | Experimental | April 1990 |
| 1165 | Network Time Protocol (NTP) over the OSI Remote Operations ServiceJ. Crowcroft, J.P. Onions | Experimental | June 1990 |
| 1176 | Interactive Mail Access Protocol: Version 2M.R. Crispin | Experimental | August 1990 |
| 1184 | Telnet Linemode OptionD.A. Borman | Draft Standard | October 1990 |
| 1204 | Message Posting Protocol (MPP)S. Yeh, D. Lee | Experimental | February 1991 |
| 1235 | Coherent File Distribution ProtocolJ. Ioannidis, G. Maguire | Experimental | June 1991 |
| 1274 | The COSINE and Internet X.500 SchemaP. Barker, S. Kille · obsoleted by RFC 4524 | Proposed Standard | November 1991 |
| 1276 | Replication and Distributed Operations extensions to provide an Internet Directory using X.500S.E. Hardcastle-Kille | Historic | November 1991 |
| 1279 | X.500 and DomainsS.E. Hardcastle-Kille | Experimental | November 1991 |
| 1288 | The Finger User Information ProtocolD. Zimmerman | Draft Standard | December 1991 |
| 1305 | Network Time Protocol (Version 3) Specification, Implementation and AnalysisD. Mills · obsoleted by RFC 5905 | Historic | March 1992 |
| 1312 | Message Send Protocol 2R. Nelson, G. Arnold | Experimental | April 1992 |
| 1314 | A File Format for the Exchange of Images in the InternetA. Katz, D. Cohen | Historic | April 1992 |
| 1328 | X.400 1988 to 1984 downgradingS. Hardcastle-Kille | Historic | May 1992 |
| 1339 | Remote Mail Checking ProtocolS. Dorner, P. Resnick | Experimental | June 1992 |
| 1350 | The TFTP Protocol (Revision 2)K. Sollins | Internet Standard | July 1992 |
| 1372 | Telnet Remote Flow Control OptionC. Hedrick, D. Borman | Proposed Standard | October 1992 |
| 1415 | FTP-FTAM Gateway SpecificationJ. Mindel, R. Slaski | Historic | January 1993 |
| 1440 | SIFT/UFT: Sender-Initiated/Unsolicited File TransferR. Troth | Experimental | July 1993 |
| 1459 | Internet Relay Chat ProtocolJ. Oikarinen, D. Reed | Experimental | May 1993 |
| 1465 | Routing Coordination for X.400 MHS Services Within a Multi Protocol / Multi Network Environment Table Format V3 for Static RoutingD. Eppenberger | Experimental | May 1993 |
| 1494 | Equivalences between 1988 X.400 and RFC-822 Message BodiesH. Alvestrand, S. Thompson | Historic | August 1993 |
| 1496 | Rules for downgrading messages from X.400/88 to X.400/84 when MIME content-types are present in the messagesH. Alvestrand, J. Romaguera, K. Jordan | Historic | August 1993 |
| 1502 | X.400 Use of Extended Character SetsH. Alvestrand | Historic | August 1993 |
| 1505 | Encoding Header Field for Internet MessagesA. Costanzo, D. Robinson, R. Ullmann | Experimental | August 1993 |
| 1528 | Principles of Operation for the TPC.INT Subdomain: Remote Printing -- Technical ProceduresC. Malamud, M. Rose · obsoleted by RFC 9121 | Historic | October 1993 |
| 1572 | Telnet Environment OptionS. Alexander, Ed. | Proposed Standard | January 1994 |
| 1575 | An Echo Function for CLNP (ISO 8473)S. Hares, C. Wittbrodt | Draft Standard | February 1994 |
| 1608 | Representing IP Information in the X.500 DirectoryT. Johannsen, G. Mansfield, M. Kosters, S. Sataluri | Experimental | March 1994 |
| 1609 | Charting Networks in the X.500 DirectoryG. Mansfield, T. Johannsen, M. Knopper | Experimental | March 1994 |
| 1639 | FTP Operation Over Big Address Records (FOOBAR)D. Piscitello | Experimental | June 1994 |
| 1641 | Using Unicode with MIMED. Goldsmith, M. Davis | Experimental | July 1994 |
| 1648 | Postmaster Convention for X.400 OperationsA. Cargille | Historic | July 1994 |
| 1652 | SMTP Service Extension for 8bit-MIMEtransportJ. Klensin, N. Freed, M. Rose, E. Stefferud, D. Crocker · obsoleted by RFC 6152 | Draft Standard | July 1994 |
| 1738 | Uniform Resource Locators (URL)T. Berners-Lee, L. Masinter, M. McCahill · obsoleted by RFC 4248, RFC 4266 | Proposed Standard | December 1994 |
| 1740 | MIME Encapsulation of Macintosh Files - MacMIMEP. Faltstrom, D. Crocker, E. Fair | Proposed Standard | December 1994 |
| 1756 | Remote Write Protocol - Version 1.0T. Rinne | Experimental | January 1995 |
| 1767 | MIME Encapsulation of EDI ObjectsD. Crocker | Proposed Standard | March 1995 |
| 1801 | MHS use of the X.500 Directory to support MHS RoutingS. Kille | Experimental | June 1995 |
| 1804 | Schema Publishing in X.500 DirectoryG. Mansfield, P. Rajeev, S. Raghavan, T. Howes | Experimental | June 1995 |
| 1806 | Communicating Presentation Information in Internet Messages: The Content-Disposition HeaderR. Troost, S. Dorner · obsoleted by RFC 2183 | Experimental | June 1995 |
| 1808 | Relative Uniform Resource LocatorsR. Fielding · obsoleted by RFC 3986 | Proposed Standard | June 1995 |
| 1832 | XDR: External Data Representation StandardR. Srinivasan · obsoleted by RFC 4506 | Draft Standard | August 1995 |
| 1835 | Architecture of the WHOIS++ serviceP. Deutsch, R. Schoultz, P. Faltstrom, C. Weider | Historic | August 1995 |
| 1845 | SMTP Service Extension for Checkpoint/RestartD. Crocker, N. Freed, A. Cargille | Experimental | September 1995 |
| 1846 | SMTP 521 Reply CodeA. Durand, F. Dupont | Experimental | September 1995 |
| 1870 | SMTP Service Extension for Message Size DeclarationJ. Klensin, N. Freed, K. Moore | Internet Standard | November 1995 |
| 1873 | Message/External-Body Content-ID Access TypeE. Levinson, J. Clark | Experimental | December 1995 |
| 1874 | SGML Media TypesE. Levinson | Experimental | December 1995 |
| 1884 | IP Version 6 Addressing ArchitectureR. Hinden, Ed., S. Deering, Ed. · obsoleted by RFC 2373 | Historic | December 1995 |
| 1900 | Renumbering Needs WorkB. Carpenter, Y. Rekhter | Informational | February 1996 |
| 1913 | Architecture of the Whois++ Index ServiceC. Weider, J. Fullton, S. Spero | Historic | February 1996 |
| 1914 | How to Interact with a Whois++ MeshP. Faltstrom, R. Schoultz, C. Weider | Historic | February 1996 |
| 1939 | Post Office Protocol - Version 3J. Myers, M. Rose | Internet Standard | May 1996 |
| 1985 | SMTP Service Extension for Remote Message Queue StartingJ. De Winter | Proposed Standard | August 1996 |
| 1986 | Experiments with a Simple File Transfer Protocol for Radio Links using Enhanced Trivial File Transfer Protocol (ETFTP)W. Polites, W. Wollman, D. Woo, R. Langan | Experimental | August 1996 |
| 2016 | Uniform Resource Agents (URAs)L. Daigle, P. Deutsch, B. Heelan, C. Alpaugh, M. Maclachlan | Experimental | October 1996 |
| 2017 | Definition of the URL MIME External-Body Access-TypeN. Freed, K. Moore, A. Cargille | Proposed Standard | October 1996 |
| 2026 | The Internet Standards Process -- Revision 3S. Bradner | Best Current Practice | October 1996 |
| 2034 | SMTP Service Extension for Returning Enhanced Error CodesN. Freed | Proposed Standard | October 1996 |
| 2045 | Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message BodiesN. Freed, N. Borenstein | Draft Standard | November 1996 |
| 2046 | Multipurpose Internet Mail Extensions (MIME) Part Two: Media TypesN. Freed, N. Borenstein | Draft Standard | November 1996 |
| 2047 | MIME (Multipurpose Internet Mail Extensions) Part Three: Message Header Extensions for Non-ASCII TextK. Moore | Draft Standard | November 1996 |
| 2049 | Multipurpose Internet Mail Extensions (MIME) Part Five: Conformance Criteria and ExamplesN. Freed, N. Borenstein | Draft Standard | November 1996 |
| 2056 | Uniform Resource Locators for Z39.50R. Denenberg, J. Kunze, D. Lynch | Proposed Standard | November 1996 |
| 2066 | TELNET CHARSET OptionR. Gellens | Experimental | January 1997 |
| 2075 | IP Echo Host ServiceC. Partridge | Experimental | January 1997 |
| 2077 | The Model Primary Content Type for Multipurpose Internet Mail ExtensionsS. Nelson, C. Parks, Mitra | Proposed Standard | January 1997 |
| 2079 | Definition of an X.500 Attribute Type and an Object Class to Hold Uniform Resource Identifiers (URIs)M. Smith | Proposed Standard | January 1997 |
| 2086 | IMAP4 ACL extensionJ. Myers · obsoleted by RFC 4314 | Proposed Standard | January 1997 |
| 2087 | IMAP4 QUOTA extensionJ. Myers · obsoleted by RFC 9208 | Proposed Standard | January 1997 |
| 2088 | IMAP4 non-synchronizing literalsJ. Myers · obsoleted by RFC 7888 | Proposed Standard | January 1997 |
| 2090 | TFTP Multicast OptionA. Emberson | Experimental | February 1997 |
| 2104 | HMAC: Keyed-Hashing for Message AuthenticationH. Krawczyk, M. Bellare, R. Canetti | Informational | February 1997 |
| 2120 | Managing the X.500 Root Naming ContextD. Chadwick | Experimental | March 1997 |
| 2122 | VEMMI URL SpecificationD. Mavrakis, H. Layec, K. Kartmann | Proposed Standard | March 1997 |
| 2141 | URN SyntaxR. Moats · obsoleted by RFC 8141 | Proposed Standard | May 1997 |
| 2142 | Mailbox Names for Common Services, Roles and FunctionsD. Crocker | Proposed Standard | May 1997 |
| 2156 | MIXER (Mime Internet X.400 Enhanced Relay): Mapping between X.400 and RFC 822/MIMES. Kille | Proposed Standard | January 1998 |
| 2157 | Mapping between X.400 and RFC-822/MIME Message BodiesH. Alvestrand | Proposed Standard | January 1998 |
| 2158 | X.400 Image Body PartsH. Alvestrand | Proposed Standard | January 1998 |
| 2159 | A MIME Body Part for FAXH. Alvestrand | Proposed Standard | January 1998 |
| 2160 | Carrying PostScript in X.400 and MIMEH. Alvestrand | Proposed Standard | January 1998 |
| 2161 | A MIME Body Part for ODAH. Alvestrand | Experimental | January 1998 |
| 2162 | MaXIM-11 - Mapping between X.400 / Internet mail and Mail-11 mailC. Allocchio | Experimental | January 1998 |
| 2163 | Using the Internet DNS to Distribute MIXER Conformant Global Address Mapping (MCGAM)C. Allocchio | Proposed Standard | January 1998 |
| 2164 | Use of an X.500/LDAP directory to support MIXER address mappingS. Kille | Proposed Standard | January 1998 |
| 2165 | Service Location ProtocolJ. Veizades, E. Guttman, C. Perkins, S. Kaplan | Proposed Standard | June 1997 |
| 2169 | A Trivial Convention for using HTTP in URN ResolutionR. Daniel | Historic | June 1997 |
| 2177 | IMAP4 IDLE commandB. Leiba | Proposed Standard | June 1997 |
| 2183 | Communicating Presentation Information in Internet Messages: The Content-Disposition Header FieldR. Troost, S. Dorner, K. Moore, Ed. | Proposed Standard | August 1997 |
| 2192 | IMAP URL SchemeC. Newman · obsoleted by RFC 5092 | Proposed Standard | September 1997 |
| 2193 | IMAP4 Mailbox ReferralsM. Gahrns | Proposed Standard | September 1997 |
| 2217 | Telnet Com Port Control OptionG. Clark | Experimental | October 1997 |
| 2218 | A Common Schema for the Internet White Pages ServiceT. Genovese, B. Jennings | Proposed Standard | October 1997 |
| 2221 | IMAP4 Login ReferralsM. Gahrns | Proposed Standard | October 1997 |
| 2227 | Simple Hit-Metering and Usage-Limiting for HTTPJ. Mogul, P. Leach | Proposed Standard | October 1997 |
| 2231 | MIME Parameter Value and Encoded Word Extensions: Character Sets, Languages, and ContinuationsN. Freed, K. Moore | Proposed Standard | November 1997 |
| 2234 | Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell · obsoleted by RFC 4234 | Proposed Standard | November 1997 |
| 2244 | ACAP -- Application Configuration Access ProtocolC. Newman, J. G. Myers | Proposed Standard | November 1997 |
| 2247 | Using Domains in LDAP/X.500 Distinguished NamesS. Kille, M. Wahl, A. Grimstad, R. Huber, S. Sataluri | Proposed Standard | January 1998 |
| 2251 | Lightweight Directory Access Protocol (v3)M. Wahl, T. Howes, S. Kille · obsoleted by RFC 4510, RFC 4511, RFC 4512, RFC 4513 | Proposed Standard | December 1997 |
| 2252 | Lightweight Directory Access Protocol (v3): Attribute Syntax DefinitionsM. Wahl, A. Coulbeck, T. Howes, S. Kille · obsoleted by RFC 4510, RFC 4512, RFC 4517, RFC 4523 | Proposed Standard | December 1997 |
| 2253 | Lightweight Directory Access Protocol (v3): UTF-8 String Representation of Distinguished NamesM. Wahl, S. Kille, T. Howes · obsoleted by RFC 4510, RFC 4514 | Proposed Standard | December 1997 |
| 2254 | The String Representation of LDAP Search FiltersT. Howes · obsoleted by RFC 4510, RFC 4515 | Proposed Standard | December 1997 |
| 2255 | The LDAP URL FormatT. Howes, M. Smith · obsoleted by RFC 4510, RFC 4516 | Proposed Standard | December 1997 |
| 2256 | A Summary of the X.500(96) User Schema for use with LDAPv3M. Wahl · obsoleted by RFC 4510, RFC 4512, RFC 4517, RFC 4519, RFC 4523 | Proposed Standard | December 1997 |
| 2279 | UTF-8, a transformation format of ISO 10646F. Yergeau · obsoleted by RFC 3629 | Draft Standard | January 1998 |
| 2293 | Representing Tables and Subtrees in the X.500 DirectoryS. Kille | Proposed Standard | March 1998 |
| 2294 | Representing the O/R Address hierarchy in the X.500 Directory Information TreeS. Kille | Proposed Standard | March 1998 |
| 2295 | Transparent Content Negotiation in HTTPK. Holtman, A. Mutz | Experimental | March 1998 |
| 2296 | HTTP Remote Variant Selection Algorithm -- RVSA/1.0K. Holtman, A. Mutz | Historic | March 1998 |
| 2298 | An Extensible Message Format for Message Disposition NotificationsR. Fajman · obsoleted by RFC 3798 | Proposed Standard | March 1998 |
| 2301 | File Format for Internet FaxL. McIntyre, S. Zilles, R. Buckley, D. Venable, G. Parsons, J. Rafferty · obsoleted by RFC 3949 | Proposed Standard | March 1998 |
| 2305 | A Simple Mode of Facsimile Using Internet MailK. Toyoda, H. Ohno, J. Murai, D. Wing · obsoleted by RFC 3965 | Proposed Standard | March 1998 |
| 2307 | An Approach for Using LDAP as a Network Information ServiceL. Howard | Experimental | March 1998 |
| 2310 | The Safe Response Header FieldK. Holtman | Historic | April 1998 |
| 2334 | Server Cache Synchronization Protocol (SCSP)J. Luciani, G. Armitage, J. Halpern, N. Doraswamy | Proposed Standard | April 1998 |
| 2342 | IMAP4 NamespaceM. Gahrns, C. Newman | Proposed Standard | May 1998 |
| 2347 | TFTP Option ExtensionG. Malkin, A. Harkin | Draft Standard | May 1998 |
| 2348 | TFTP Blocksize OptionG. Malkin, A. Harkin | Draft Standard | May 1998 |
| 2349 | TFTP Timeout Interval and Transfer Size OptionsG. Malkin, A. Harkin | Draft Standard | May 1998 |
| 2355 | TN3270 EnhancementsB. Kelly | Draft Standard | June 1998 |
| 2359 | IMAP4 UIDPLUS extensionJ. Myers · obsoleted by RFC 4315 | Proposed Standard | June 1998 |
| 2368 | The mailto URL schemeP. Hoffman, L. Masinter, J. Zawinski · obsoleted by RFC 6068 | Proposed Standard | July 1998 |
| 2369 | The Use of URLs as Meta-Syntax for Core Mail List Commands and their Transport through Message Header FieldsG. Neufeld, J. Baer | Proposed Standard | July 1998 |
| 2371 | Transaction Internet Protocol Version 3.0J. Lyon, K. Evans, J. Klein | Proposed Standard | July 1998 |
| 2372 | Transaction Internet Protocol - Requirements and Supplemental InformationK. Evans, J. Klein, J. Lyon | Informational | July 1998 |
| 2384 | POP URL SchemeR. Gellens | Proposed Standard | August 1998 |
| 2387 | The MIME Multipart/Related Content-typeE. Levinson | Proposed Standard | August 1998 |
| 2388 | Returning Values from Forms: multipart/form-dataL. Masinter · obsoleted by RFC 7578 | Proposed Standard | August 1998 |
| 2389 | Feature negotiation mechanism for the File Transfer ProtocolP. Hethmon, R. Elz | Proposed Standard | August 1998 |
| 2392 | Content-ID and Message-ID Uniform Resource LocatorsE. Levinson | Proposed Standard | August 1998 |
| 2396 | Uniform Resource Identifiers (URI): Generic SyntaxT. Berners-Lee, R. Fielding, L. Masinter · obsoleted by RFC 3986 | Draft Standard | August 1998 |
| 2397 | The "data" URL schemeL. Masinter | Proposed Standard | August 1998 |
| 2421 | Voice Profile for Internet Mail - version 2G. Vaudreuil, G. Parsons · obsoleted by RFC 3801 | Proposed Standard | September 1998 |
| 2422 | Toll Quality Voice - 32 kbit/s ADPCM MIME Sub-type RegistrationG. Vaudreuil, G. Parsons · obsoleted by RFC 3802 | Proposed Standard | September 1998 |
| 2423 | VPIM Voice Message MIME Sub-type RegistrationG. Vaudreuil, G. Parsons · obsoleted by RFC 3801 | Proposed Standard | September 1998 |
| 2424 | Content Duration MIME Header DefinitionG. Vaudreuil, G. Parsons · obsoleted by RFC 3803 | Proposed Standard | September 1998 |
| 2425 | A MIME Content-Type for Directory InformationT. Howes, M. Smith, F. Dawson · obsoleted by RFC 6350 | Proposed Standard | September 1998 |
| 2426 | vCard MIME Directory ProfileF. Dawson, T. Howes · obsoleted by RFC 6350 | Proposed Standard | September 1998 |
| 2428 | FTP Extensions for IPv6 and NATsM. Allman, S. Ostermann, C. Metz | Proposed Standard | September 1998 |
| 2445 | Internet Calendaring and Scheduling Core Object Specification (iCalendar)F. Dawson, D. Stenerson · obsoleted by RFC 5545 | Proposed Standard | November 1998 |
| 2446 | iCalendar Transport-Independent Interoperability Protocol (iTIP) Scheduling Events, BusyTime, To-dos and Journal EntriesS. Silverberg, S. Mansour, F. Dawson, R. Hopson · obsoleted by RFC 5546 | Proposed Standard | November 1998 |
| 2447 | iCalendar Message-Based Interoperability Protocol (iMIP)F. Dawson, S. Mansour, S. Silverberg · obsoleted by RFC 6047 | Proposed Standard | November 1998 |
| 2449 | POP3 Extension MechanismR. Gellens, C. Newman, L. Lundblade | Proposed Standard | November 1998 |
| 2476 | Message SubmissionR. Gellens, J. Klensin · obsoleted by RFC 4409 | Proposed Standard | December 1998 |
| 2480 | Gateways and MIME Security MultipartsN. Freed | Proposed Standard | January 1999 |
| 2483 | URI Resolution Services Necessary for URN ResolutionM. Mealling, R. Daniel | Experimental | January 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 |
| 2530 | Indicating Supported Media Features Using Extensions to DSN and MDND. Wing | Proposed Standard | March 1999 |
| 2532 | Extended Facsimile Using Internet MailL. Masinter, D. Wing | Proposed Standard | March 1999 |
| 2533 | A Syntax for Describing Media Feature SetsG. Klyne | Proposed Standard | March 1999 |
| 2534 | Media Features for Display, Print, and FaxL. Masinter, D. Wing, A. Mutz, K. Holtman | Proposed Standard | March 1999 |
| 2554 | SMTP Service Extension for AuthenticationJ. Myers · obsoleted by RFC 4954 | Proposed Standard | March 1999 |
| 2557 | MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)J. Palme, A. Hopmann, N. Shelness | Proposed Standard | March 1999 |
| 2567 | Design Goals for an Internet Printing ProtocolF. Wright | Experimental | April 1999 |
| 2568 | Rationale for the Structure of the Model and Protocol for the Internet Printing ProtocolS. Zilles | Experimental | April 1999 |
| 2569 | Mapping between LPD and IPP ProtocolsR. Herriot, Ed., T. Hastings, N. Jacobs, J. Martin | Experimental | April 1999 |
| 2589 | Lightweight Directory Access Protocol (v3): Extensions for Dynamic Directory ServicesY. Yaacovi, M. Wahl, T. Genovese | Proposed Standard | May 1999 |
| 2595 | Using TLS with IMAP, POP3 and ACAPC. Newman | Proposed Standard | June 1999 |
| 2596 | Use of Language Codes in LDAPM. Wahl, T. Howes · obsoleted by RFC 3866 | Proposed Standard | May 1999 |
| 2608 | Service Location Protocol, Version 2E. Guttman, C. Perkins, J. Veizades, M. Day | Proposed Standard | June 1999 |
| 2609 | Service Templates and Service: SchemesE. Guttman, C. Perkins, J. Kempf | 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 |
| 2640 | Internationalization of the File Transfer ProtocolB. Curtin | Proposed Standard | July 1999 |
| 2645 | ON-DEMAND MAIL RELAY (ODMR) SMTP with Dynamic IP AddressesR. Gellens | Proposed Standard | August 1999 |
| 2646 | The Text/Plain Format ParameterR. Gellens, Ed. · obsoleted by RFC 3676 | Proposed Standard | August 1999 |
| 2649 | An LDAP Control and Schema for Holding Operation SignaturesB. Greenblatt, P. Richard | Experimental | August 1999 |
| 2651 | The Architecture of the Common Indexing Protocol (CIP)J. Allen, M. Mealling | Proposed Standard | August 1999 |
| 2652 | MIME Object Definitions for the Common Indexing Protocol (CIP)J. Allen, M. Mealling | Proposed Standard | August 1999 |
| 2653 | CIP Transport ProtocolsJ. Allen, P. Leach, R. Hedberg | Proposed Standard | August 1999 |
| 2654 | A Tagged Index Object for use in the Common Indexing ProtocolR. Hedberg, B. Greenblatt, R. Moats, M. Wahl | Experimental | August 1999 |
| 2655 | CIP Index Object Format for SOIF ObjectsT. Hardie, M. Bowman, D. Hardy, M. Schwartz, D. Wessels | Experimental | August 1999 |
| 2656 | Registration Procedures for SOIF Template TypesT. Hardie | Experimental | August 1999 |
| 2657 | LDAPv2 Client vs. the Index MeshR. Hedberg | Experimental | August 1999 |
| 2732 | Format for Literal IPv6 Addresses in URL'sR. Hinden, B. Carpenter, L. Masinter · obsoleted by RFC 3986 | Proposed Standard | December 1999 |
| 2738 | Corrections to "A Syntax for Describing Media Feature Sets"G. Klyne | Proposed Standard | December 1999 |
| 2739 | Calendar Attributes for vCard and LDAPT. Small, D. Hennessy, F. Dawson | Proposed Standard | January 2000 |
| 2756 | Hyper Text Caching Protocol (HTCP/0.0)P. Vixie, D. Wessels | Experimental | January 2000 |
| 2774 | An HTTP Extension FrameworkH. Nielsen, P. Leach, S. Lawrence | Historic | February 2000 |
| 2806 | URLs for Telephone CallsA. Vaha-Sipila · obsoleted by RFC 3966 | Proposed Standard | April 2000 |
| 2821 | Simple Mail Transfer ProtocolJ. Klensin, Ed. · obsoleted by RFC 5321 | Proposed Standard | April 2001 |
| 2822 | Internet Message FormatP. Resnick, Ed. · obsoleted by RFC 5322 | Proposed Standard | April 2001 |
| 2846 | GSTN Address Element Extensions in E-mail ServicesC. Allocchio | Proposed Standard | June 2000 |
| 2849 | The LDAP Data Interchange Format (LDIF) - Technical SpecificationG. Good | Proposed Standard | June 2000 |
| 2852 | Deliver By SMTP Service ExtensionD. Newman | Proposed Standard | June 2000 |
| 2879 | Content Feature Schema for Internet Fax (V2)G. Klyne, L. McIntyre | Proposed Standard | August 2000 |
| 2891 | LDAP Control Extension for Server Side Sorting of Search ResultsT. Howes, M. Wahl, A. Anantha | Proposed Standard | August 2000 |
| 2910 | Internet Printing Protocol/1.1: Encoding and TransportR. Herriot, Ed., S. Butler, P. Moore, R. Turner, J. Wenn · obsoleted by RFC 8010 | Proposed Standard | September 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 |
| 2912 | Indicating Media Features for MIME ContentG. Klyne | Proposed Standard | September 2000 |
| 2913 | MIME Content Types in Media Feature ExpressionsG. Klyne | Proposed Standard | September 2000 |
| 2919 | List-Id: A Structured Field and Namespace for the Identification of Mailing ListsR. Chandhok, G. Wenger | Proposed Standard | March 2001 |
| 2920 | SMTP Service Extension for Command PipeliningN. Freed | Internet Standard | September 2000 |
| 2938 | Identifying Composite Media FeaturesG. Klyne, L. Masinter | Proposed Standard | September 2000 |
| 2965 | HTTP State Management MechanismD. Kristol, L. Montulli · obsoleted by RFC 6265 | Historic | October 2000 |
| 2971 | IMAP4 ID extensionT. Showalter | Proposed Standard | October 2000 |
| 2974 | Session Announcement ProtocolM. Handley, C. Perkins, E. Whelan | Experimental | October 2000 |
| 2987 | Registration of Charset and Languages Media Features TagsP. Hoffman | Proposed Standard | November 2000 |
| 3009 | Registration of parityfec MIME typesJ. Rosenberg, H. Schulzrinne · obsoleted by RFC 5109 | Proposed Standard | November 2000 |
| 3017 | XML DTD for Roaming Access Phone BookM. Riegel, G. Zorn | Proposed Standard | December 2000 |
| 3018 | Unified Memory Space Protocol SpecificationA. Bogdanov | Experimental | December 2000 |
| 3023 | XML Media TypesM. Murata, S. St. Laurent, D. Kohn · obsoleted by RFC 7303 | Proposed Standard | January 2001 |
| 3028 | Sieve: A Mail Filtering LanguageT. Showalter · obsoleted by RFC 5228, RFC 5429 | Proposed Standard | January 2001 |
| 3030 | SMTP Service Extensions for Transmission of Large and Binary MIME MessagesG. Vaudreuil | Proposed Standard | December 2000 |
| 3049 | TN3270E Service Location and Session BalancingJ. Naugle, K. Kasthurirangan, G. Ledford | Proposed Standard | January 2001 |
| 3059 | Attribute List Extension for the Service Location ProtocolE. Guttman | Proposed Standard | February 2001 |
| 3080 | The Blocks Extensible Exchange Protocol CoreM. Rose | Proposed Standard | March 2001 |
| 3081 | Mapping the BEEP Core onto TCPM. Rose | Proposed Standard | March 2001 |
| 3082 | Notification and Subscription for SLPJ. Kempf, J. Goldschmidt | Experimental | March 2001 |
| 3088 | OpenLDAP Root Service An experimental LDAP referral serviceK. Zeilenga | Experimental | April 2001 |
| 3111 | Service Location Protocol Modifications for IPv6E. Guttman | Proposed Standard | May 2001 |
| 3191 | Minimal GSTN address format in Internet MailC. Allocchio | Draft Standard | October 2001 |
| 3192 | Minimal FAX address format in Internet MailC. Allocchio | Draft Standard | October 2001 |
| 3282 | Content Language HeadersH. Alvestrand | Draft Standard | May 2002 |
| 3302 | Tag Image File Format (TIFF) - image/tiff MIME Sub-type RegistrationG. Parsons, J. Rafferty | Draft Standard | September 2002 |
| 3404 | Dynamic Delegation Discovery System (DDDS) Part Four: The Uniform Resource Identifiers (URI)M. Mealling | Proposed Standard | October 2002 |
| 3461 | Simple Mail Transfer Protocol (SMTP) Service Extension for Delivery Status Notifications (DSNs)K. Moore | Draft Standard | January 2003 |
| 3462 | The Multipart/Report Content Type for the Reporting of Mail System Administrative MessagesG. Vaudreuil · obsoleted by RFC 6522 | Draft Standard | January 2003 |
| 3463 | Enhanced Mail System Status CodesG. Vaudreuil | Draft Standard | January 2003 |
| 3464 | An Extensible Message Format for Delivery Status NotificationsK. Moore, G. Vaudreuil | Draft Standard | January 2003 |
| 3501 | INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1M. Crispin · obsoleted by RFC 9051 | Proposed Standard | March 2003 |
| 3789 | Introduction to the Survey of IPv4 Addresses in Currently Deployed IETF Standards Track and Experimental DocumentsP. Nesser, II, A. Bergstrom, Ed. | Informational | June 2004 |
| 3895 | Definitions of Managed Objects for the DS1, E1, DS2, and E2 Interface TypesO. Nicklass, Ed. · obsoleted by RFC 4805 | Proposed Standard | September 2004 |