Directory FAQ on Domain Names by changefrom.com - A Domain name is a text name for a 'real' internet address, which is called an Internet protocol (IP) number. Google.com is an example of a domain name. The Internet was built on the notion that any computer on a global network can be identified by its numeric Internet Protocol (IP) address. But since people, and not machines, are the primary users of the Internet, a more people-friendly naming system called the Domain Name System (DNS) was invented. DNS maps a host name like www.rwgusa.com to the IP address of the machine that hosts the CHANGEFORM web site.

The DNS structure contains a hierarchy of names with highest level as Root, and is unnamed. Top Level Domains (TLDs) are divided into classes based on rules that have evolved over time. There are currently four TLDs available for registration, they are .com, .net, .org, .info. .biz .tv .cc .ws There are more TLDs in the process of being approved by ICANN.