A domain name is a unique address through which ones customers and friends can find all about you and your organisation. It is an identification name which is used to indicate the ownership of a name on the web. If your name is registered on Domain nobody else can use it other than you. Your domain name is the first step for you in getting online. Domain names are also called host names. .com, co.in, .net, .co, .org, and others are some of the most commonly used domain names.