Internet Assigned Numbers Authority

The global coordination of the DNS Root, IP addressing, and other Internet protocol resources is performed as the Internet Assigned Numbers Authority (IANA) functions. Learn more.

Domain Names

Management of the DNS Root Zone (assignments of ccTLDs and gTLDs) along with other functions such as the .int and .arpa zones.

Number Resources

Coordination of the global IP and AS number spaces, such as allocations made to Regional Internet Registries.

Protocol Assignments

The central repository for protocol name and number registries used in many Internet protocols.

IANA Stewardship Transition. As of 1 October 2016, the IANA functions are being provided by Public Technical Identifiers, a new affiliate of ICANN.

2016 Annual Customer Survey. ICANN is currently conducting the 2016 Annual Customer Survey. If you have made use of IANA request services in the last year you should have received an invitation from Judy Bromley at Ebiquity to participate in a survey hosted at Reminder emails will be sent soon asking for your participation before the survey closes on October 21.