A domain name is used to identify one or more IP addresses. For example, the domain name prabhnoor.com represents one or many IP addresses. It is also used in URLs to identify particular Web pages. For example, in the URL “http://www.prabhnoor.com/index.html”, the domain name is “prabhnoor.com”.
Every domain name has a suffix, that is after the last dot(.) in name, and this indicates which top level domain (TLD) it belongs to. There are only a limited number of such domains. For example:
Internet is based on IP addresses, not domain names, so every Web server requires a Domain Name System (DNS) server, who translates domain names into IP addresses.
