グレーのバックは、後発のRFCにより廃棄されたことを示す。

(原典:rfc-index.txt, std-index.txt

STD0011 : STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGES
RFC0822 Standard for the format of ARPA Internet text messages D. Crocker Obsoletes RFC0733
Obsoleted by RFC2822
Updated by RFC1123
RFC1138
RFC1148
RFC1327
RFC2156
Aug-13-1982 TXT=109200 bytes STANDARD
RFC0733 Standard for the format of ARPA network text messages D. Crocker
J. Vittal
K.T. Pogran
D.A. Henderson
Obsoletes RFC0724
Obsoleted by RFC0822
Nov-21-1977 TXT=73006 bytes UNKNOWN
RFC0724 Proposed official standard for the format of ARPA Network messages D. Crocker
K.T. Pogran
J. Vittal
D.A. Henderson
Obsoleted by RFC0733
May-12-1977 TXT=75554 bytes UNKNOWN
RFC1123 Requirements for Internet Hosts - Application and Support R. Braden Updates RFC0822
Updated by RFC1349
RFC2181
October 1989 TXT=245503 bytes STANDARD
RFC1138 Mapping between X.400(1988) / ISO 10021 and RFC 822 S.E. Kille. Obsoleted by RFC1327
RFC2156
Updates RFC0822
RFC0987
RFC1026
Updated by RFC1148
Dec-01-1989 TXT=191029 bytes EXPERIMENTAL
RFC1148 Mapping between X.400(1988) / ISO 10021 and RFC 822 S.E. Kille. Obsoleted by RFC1327
RFC2156
Updates RFC0822
RFC0987
RFC1026
RFC1138
Mar-01-1990 TXT=194292 bytes EXPERIMENTAL
RFC1327 Mapping between X.400(1988) / ISO 10021 and RFC 822 S. Hardcastle-Kille Obsoletes RFC0987
RFC1026
RFC1138
RFC1148
Obsoleted by RFC2156
Updates RFC0822
Updated by RFC1495
May 1992 TXT=228598 bytes PROPOSED STANDARD
RFC2156 MIXER (Mime Internet X.400 Enhanced Relay): Mapping between X.400 and RFC 822/MIME S. Kille Obsoletes RFC0987
RFC1026
RFC1138
RFC1148
RFC1327
RFC1495
Updates RFC0822
January 1998 TXT=280385 bytes PROPOSED STANDARD
RFC2822 Internet Message Format P. Resnick Obsoletes RFC0822
April 2001 TXT=110695 bytes PROPOSED STANDARD