Domain name system Or server Or service.

An Internet service that translates domain names into IP address. Because domain names are alphabetical. they are easier to remember. The internet however, really based on IP-addresses . Everytime you use a domain name, therefore, a DNS service must translate the name into corresponding IP-address.

For example: The domain name www.example.com translate to 192.168.0.10

The DNS system infact, it’s own network. If one DNS server doesn’t know how to translate a particular domain name, it asks another one and so on, until the correct Ip-address is returned.