http://www.rfc-editor.org/rfc/rfc2036.txt
RFC 2036: Observations on the use of Components of the Class A Address Space within the Internet, G. Huston1996-10-01T23:00:00-00:00This document is a commentary on the recommendation that IANA commence allocation of the presently unallocated components of the Class A address space to registries, for deployment within the Internet as class-less address blocks. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.