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Definition: FQDN

(Fully Qualified Domain Name) The complete domain name for a specific computer (host) on the Internet. The FQDN, which includes the hostname and domain name, is converted into a physical IP address. For example, www.computerlanguage.com is the FQDN for the website of the publisher of this encyclopedia. WWW is the host, while computerlanguage.com is the domain name. The .com is the generic top-level domain (gTLD) name.

For uniformity on the Web, there are hundreds of millions of hosts named WWW; however, if the WWW is not entered, WWW is generally the default. See DNS, IP address and Internet domain name.