Root nameserver

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Root name server (alternatively spelled, root nameserver or, simply, root server; hereinafter, the Server) is a name server for the root zone of the Domain Name System (DNS) of the Internet.

Functions

The Server:

  1. Maintains databases for:
    • All the records in the root zone;
    • A list of TLD nameservers, which are the authoritative name servers for the top-level domains (TLDs);
  2. Directly answers requests of DNS resolvers for records in the root zone and appropriate TLD nameservers.

requests by returning a list of the authoritative name servers for the appropriate top-level domain (TLD). The root name servers are a critical part of the Internet infrastructure because they are the first step in translating (resolving) human readable host names into IP addresses that are used in communication between Internet hosts.