The unique name that identifies an Internet site. Domain Names always have 2 or more parts, separated by dots. A Domain name is the Internet's way of translating the IP address of a particular computer into an easy to remember combination of words and numbers. A given machine may have more than one Domain Name but a given Domain Name points to only one machine. For example, the domain names:
can all refer to the same machine, but each domain name can refer to no more than one machine.