• A name server for the root zone of the Domain Name System (DNS) of the Internet. It directly answers requests for records in the root zone and answers other requests by returning a list of the authoritative name servers for the appropriate top-level domain (TLD). Root name servers are a critical part of the Internet infrastructure because they are the first step in translating (resolving) human-readable hostnames into IP addresses that are used in communication between Internet hosts. ← Wikipedia

1. Related terms: Root zone, Zone apex, Alternative DNS root, Top-level domain
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