http://www.rfc-editor.org/rfc/rfc6117.txt
RFC 6117: IANA Registration of Enumservices: Guide, Template, and IANA Considerations, B. Hoeneisen, A. Mayrhofer, J. Livingood2011-03-01T23:00:00-00:00This document specifies a revision of the IANA Registration Guidelines for Enumservices, describes corresponding registration procedures, and provides a guideline for creating Enumservice Specifications. [STANDARDS-TRACK]