A fully qualified domain name (FQDN), sometimes also referred to as an absolute domain name, is a domain name that specifies its exact location in the tree hierarchy of the Domain Name System (DNS). It specifies all domain levels, including the top-level domain and the root zone. It usually consists of a host name and at least one higher-level domain (label) separated by the symbol “.” and always ends in the top-level domain.

fully qualified domain name
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