Root Zone Management

The Domain Name System (DNS) root zone is the highest-level of the naming hierarchy, principally composed of delegations of top-level domains (such as .edu or .in). In managing the DNS root zone, IANA responsibilities include assigning managers for these domains, recording technical delegation data in the root zone, and publishing a registry of related information.

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  Top-level Domains

  The Top-Level Domain Registry (also known as the Root Zone Database) is the authoritative record of top-level domains, including the organization that manages the domains, technical details and contact information.

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  Files and Downloads

  The root zone DNS data is available for download as a DNS zone file along with associated trust information, and in other formats.

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  Delegation Management

  Existing TLD managers can maintain their delegation details through our online interface.

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  Instructions and Guides

  Articles covering the rules governing what top-level domains are permissible, the procedures to register and update top-level domains, and other related topics.

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  Root Zone DNSSEC Information

  Information about DNSSEC in the root zone, including the trust anchor for the DNS.