IANA
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IANA (Internet Assigned Numbers Authority) is a function of [[icann|ICANN]] responsible for maintaining the DNS root zone, coordinating IP address allocation to Regional Internet Registries, and managing protocol parameter registries.
Example
IANA maintains the authoritative list of all TLDs at the Root Zone Database (iana.org/domains/root/db).
Referenced in Guides
New gTLD Landscape