A fully qualified domain name (FQDN) is an absolute domain name that specifies the complete path from a host computer to the root of the Domain Name System (DNS) hierarchy. It includes the host name, the domain name, and the top-level domain (TLD). For example, “www.example.com” is a FQDN that specifies the host “www” in the domain “example.com” in the TLD “.com”.
FQDNs are used to identify computers on the Internet and to resolve domain names to IP addresses. They are also used in email addresses, website URLs, and other applications.
