ICANN Acronyms and Terms
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Internet Assigned Numbers Authority functions(IANA functions)
Functions involving the coordination of the unique identifiers and codes that keep the Internet running smoothly. IANA functions include management of Internet number resources, management of the Domain Name System root zone, and maintenance of the authoritative registries for many of the codes and numbers used in the Internet protocols.
The IANA functions are performed by Public Technical Identifiers, an affiliate of ICANN.