RFC 796 (Address Mappings) to Historic
status-change-ipv4-address-mapping-classes-to-historic-01

RFC 796 [RFC796] specifies formats for "classful" IPv4 addresses.
It also specifies mappings for some existing networks at the time it
was published between their "local" network representations and
IPv4 equivalents.  However, "classful" addresses have been largely
superseded by CIDR [RFC4632].  Furthermore, the vast majority of
these addresses have either been reassigned to other organizations,
or are considered part of private address space [RFC1918].
Therefore, RFC 796 is reclassified to Historic status.