Fully qualified domain name

From Wiki @ Karl Jones dot com
Revision as of 12:50, 10 May 2015 by Karl Jones (Talk | contribs) (Def)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

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.

A fully qualified domain name is distinguished by its lack of ambiguity: it can be interpreted only in one way.

The DNS root domain is unnamed, which is expressed by the empty label, resulting in a fully qualified domain name ending with the dot character.

The need for fully qualified domain names first arose out of a requirement for uniformity as the Internet was quickly growing in size in the 1980s.

External Links