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A Domain is a part of the Domain Name Service (DNS) name hierarchy that represents a collection of DNS resource records of computers and resources hosts that share part of their fully qualified name and whose DNS information is managed as a group.

A domain is a concept, represented by a zone file in a DNS server's configuration. It is a useful concept for discussing DNS issues. A zone file holds the contents of a DNS domain.

The term domain is often used incorrectly to refer to the actual name of a domain.

How does this work?

Lets pretend we have four computers whose names are four, three, two and one. Lets pretend all four hosts belong to a single domain named

Their fully qualified domain names would be,,,

The domain contains all the hosts in

[pfew! Thank goodness for cut and paste! --InetD ]



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