Domain name extension refers to the ending of a top level domain. Some of the most common ones are .com, .net, and .org. There are only a limited number of extensions and are predefined. You will have to select one for yourself from these three extensions.
The domain name extension signifies something that is why it is named so. Taking the example of .com, this extension is used for commercial sites despite of their country of origin. .net is also used for the same purpose but the original intention was the use of the network sites such as ISPs. Taking another extension, .edu is used for schools and other education related sites. Meanwhile for those sites that belong to the government of a country, they will use .gov as their extension. On the other hand, .org is used by organizations and it is not for profit companies.
Dot com domain names are a little expensive than other domains like Dot info domain names that costs less. .com, .net, and .org are the most commonly used domain names and are widely accepted throughout the world. Anyone can have an access to them in any country to register a domain with one of these extensions. The dot com domain name is preferred by almost all the internet users. As the users are increasing, the numbers of domain names are increasing too. There fore many other extensions are now available in order to full fill these needs.
