domain names

A domain name is the second-level domain, in alpha and or numerical form that is part of a URL (Uniform Resource Locator) that tells the DNS (Domain Name System) where to locate documents, organizations or resources on the Internet. The domain name must be combined with a TLD (top-level-domain) like .com and must be unique to the TLD. The third level domain (www) is used to identify a particular host server.