What's Domain?

The domain name is a unique name given to identify the name of the computer servers such as web server or email server in a computer network or internet.

The domain name serves to facilitate the users on the Internet at the time of access to the server, and also used to remember the name of the visited server without having to know the sequence of complex numbers known as IP addresses. This domain name is also known as a union of a website as an example "blogger.com". The domain name is also sometimes referred to by the term URL, or Web site addresses.

At first domain name can only be written by the 26 Roman alphabet, but today has been possible to use foreign alphabet to internationalize domain names.

Domain name system (DNS) is a rule used in the naming system of this domain name. like in the picture.