A name that identifies one or more IP addresses. For example, the domain name microsoft.com represents about a dozen IP addresses. Domain names are used in URLs to identify particular Web pages. For example, in the URL http://www.blogspot.com/, the domain name is blogspot.com. Every domain name has a suffix that indicates which top level domain (TLD) it belongs to. There are only a limited number of such domains. For example: # gov - Government agencies # edu - Educational institutions # org - Organizations (nonprofit) # mil - Military # com - commercial business # net - Network organizations # ca - Canada # th - Thailand # us - United States # id - Indonesia # it - italy # ru - russia # co.uk - commercial business united kingdom Because the Internet is based on IP addresses, not domain names, every Web server requires a Domain Name System (DNS) server to translate domain names into IP addresses.