| 373 | Arbitrary Character SetsJ. McCarthy | Unknown | July 1972 |
| 821 | Simple Mail Transfer ProtocolJ. Postel · obsoleted by RFC 2821 | Internet Standard | August 1982 |
| 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 |
| 959 | File Transfer ProtocolJ. Postel, J. Reynolds | Internet Standard | October 1985 |
| 1340 | Assigned NumbersJ. Reynolds, J. Postel · obsoleted by RFC 1700 | Historic | July 1992 |
| 1344 | Implications of MIME for Internet Mail GatewaysN. Borenstein | Informational | June 1992 |
| 1345 | Character Mnemonics and Character SetsK. Simonsen | Informational | June 1992 |
| 1468 | Japanese Character Encoding for Internet MessagesJ. Murai, M. Crispin, E. van der Poel | Informational | June 1993 |
| 1489 | Registration of a Cyrillic Character SetA. Chernov | Informational | July 1993 |
| 1502 | X.400 Use of Extended Character SetsH. Alvestrand | Historic | August 1993 |
| 1522 | MIME (Multipurpose Internet Mail Extensions) Part Two: Message Header Extensions for Non-ASCII TextK. Moore · obsoleted by RFC 2045, RFC 2046, RFC 2047, RFC 2048, RFC 2049 | Draft Standard | September 1993 |
| 1554 | ISO-2022-JP-2: Multilingual Extension of ISO-2022-JPM. Ohta, K. Handa | Informational | December 1993 |
| 1555 | Hebrew Character Encoding for Internet MessagesH. Nussbacher, Y. Bourvine | Informational | December 1993 |
| 1557 | Korean Character Encoding for Internet MessagesU. Choi, K. Chon, H. Park | Informational | December 1993 |
| 1641 | Using Unicode with MIMED. Goldsmith, M. Davis | Experimental | July 1994 |
| 1642 | UTF-7 - A Mail-Safe Transformation Format of UnicodeD. Goldsmith, M. Davis · obsoleted by RFC 2152 | Experimental | July 1994 |
| 1700 | Assigned NumbersJ. Reynolds, J. Postel · obsoleted by RFC 3232 | Historic | October 1994 |
| 1766 | Tags for the Identification of LanguagesH. Alvestrand · obsoleted by RFC 3066, RFC 3282 | Proposed Standard | March 1995 |
| 1815 | Character Sets ISO-10646 and ISO-10646-J-1M. Ohta | Informational | July 1995 |
| 1842 | ASCII Printable Characters-Based Chinese Character Encoding for Internet MessagesY. Wei, Y. Zhang, J. Li, J. Ding, Y. Jiang | Informational | August 1995 |
| 1843 | HZ - A Data Format for Exchanging Files of Arbitrarily Mixed Chinese and ASCII charactersF. Lee | Informational | August 1995 |
| 1866 | Hypertext Markup Language - 2.0T. Berners-Lee, D. Connolly · obsoleted by RFC 2854 | Historic | November 1995 |
| 1922 | Chinese Character Encoding for Internet MessagesHF. Zhu, DY. Hu, ZG. Wang, TC. Kao, WCH. Chang, M. Crispin | Informational | March 1996 |
| 1945 | Hypertext Transfer Protocol -- HTTP/1.0T. Berners-Lee, R. Fielding, H. Frystyk | Informational | May 1996 |
| 1958 | Architectural Principles of the InternetB. Carpenter, Ed. | Informational | June 1996 |
| 2044 | UTF-8, a transformation format of Unicode and ISO 10646F. Yergeau · obsoleted by RFC 2279 | Informational | 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 |
| 2070 | Internationalization of the Hypertext Markup LanguageF. Yergeau, G. Nicol, G. Adams, M. Duerst · obsoleted by RFC 2854 | Historic | January 1997 |