Internet Assigned Number Authority (IANA)

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The Internet Assigned Number Authority (IANA) is responsible for Internet Protocol (IP) and coordinates global IP addressing, symbols, numbering, media-type and DNS root zone management.

Based at the University of Southern California (USC), IANA manages a centralized IP database and uses global DNS oversight to assign unique IP addresses to private or public organizations. IANA receives annual subscription fees for these services.

Source: https://www.techopedia.com/definition/2423/internet-assigned-numbers-authority-iana