http://www.rfc-editor.org/rfc/rfc1031.txt
RFC 1031: MILNET name domain transition, W.D. Lazear1987-11-01T23:00:00-00:00This RFC consolidates information necessary for the implementation of domain style names throughout the DDN/MILNET Internet community. The introduction of domain style names will impact all hosts in the DDN/MILNET Internet. This RFC is designed as an aid to implementors and administrators by providing: 1) an overview of the transition process from host tables to domains, 2) a timetable for the transition, and 3) references to documentation and software relating to the domain system.