The Internet Assigned Numbers Authority (IANA) is a standards organization that oversees global IP address allocation, autonomous system number allocation, root zone management in the Domain Name System, media types, and other Internet Protocol-related tasks. It is responsible for maintaining a collection of registries critical for ensuring global coordination of the DNS root zone, IP addressing, and other Internet protocol resources.
IANA’s functions include domain names management, coordination of global IP and AS numbers, and protocol assignments. IANA is one of the Internet’s oldest institutions, with its functions dating back to the 1970s, and today, the services are provided by Public Technical Identifiers, an affiliate of ICANN.