http://www.rfc-editor.org/rfc/rfc4993.txt
RFC 4993: A Lightweight UDP Transfer Protocol for the Internet Registry Information Service, A. Newton2007-08-01T23:00:00-00:00This document describes a lightweight UDP transfer protocol for the Internet Registry Information Service (IRIS). This transfer protocol uses a single packet for every request and response, and optionally employs compression over the contents of the packet. [STANDARDS-TRACK]