http://www.rfc-editor.org/rfc/rfc1466.txt
RFC 1466: Guidelines for Management of IP Address Space, E. Gerich1993-05-01T23:00:00-00:00This document proposes a plan which will forward the implementation of RFC 1174 and which defines the allocation and assignment of the network number space. This memo provides information for the Internet community. It does not specify an Internet standard.