This article provides you with information regarding the Domain Naming System (DNS)
DNS is an intricate part of how the internet works. It is often compared to a phone book, but instead of connecting phone numbers to people, it connects IP addresses to domain names.
Domain names are alphabetic and therefore easier for humans to remember. The Internet, however, is based on IP addresses, where every computer (host) is assigned a unique IP address.
DNS made easy :
TIP: More information regarding Domain name functions can be found here.