DCHK- and IRIS-related links
- RFC 3981: IRIS: The Internet Registry Information Service (IRIS) Core Protocol
- RFC 3982: IRIS: A Domain Registry (dreg) Type for the Internet Registry Information Service
- RFC 4992: XML Pipelining with Chunks for the Internet Registry Information Service
- RFC 4993: A Lightweight UDP Transfer Protocol for the Internet Registry Information Service
- RFC 5144: A Domain Availability Check (DCHK) Registry Type for the Internet Registry Information Service (IRIS)