Fully Qualified Domain Name (FQDN)

Written by Editor in Letter FLast Updated September 24, 2019

Definition of FQDN in The Network Encyclopedia.

What is FQDN (fully qualified domain name)?

FQDN stands for Fully Qualified Domain Name. In the Domain Name System (DNS), FQDN is a dotted name that fully identifies a TCP/IP host on the Internet. A fully qualified domain name (FQDN) of a host consists of its host name dotted together with its domain name and any names of subdomains in which the host resides.

FQDN - Fully Qualified Domain Name structure
FQDN – Fully Qualified Domain Name structure

FQDNs are used in Uniform Resource Locators (URLs) for accessing Web pages on the Internet and provide an absolute path through the DNS namespace to the target host on which the Web page resides. They are also sometimes called absolute domain names.

Example of a FQDN

For the FQDN server12.networkencyclopedia.com, the TCP/IP hostname is server12 and its domain is networkencyclopedia.com.

External References

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