Domain Name System, or DNS, is the friendly naming system for giving addresses to web servers and web pages. Somewhat like phone numbers, the domain name system gives every server a memorable and easy-to-spell address. Simultaneously, the domain names hide the really technical IP address which most viewers aren't interested in. Examples of a domain name would be:
It should be remembered that the domain name is not the same as the URL.
To be technically correct, a domain name is commonly part of the URL but a URL goes into much more detail than a domain name, providing much more information, including the specific page address, folder name, machine name, and protocol language.
A Domain Name is Not the Same as the IP Address.
A domain name is only intended to be a friendly and memorable "nickname". The true technical address of a web host is its Internet Protocol Address or IP Address.