Domain Name System Simple Definition. The domain name system maps the name people use to locate a website to the IP address that a computer uses to locate a website. Even this DNS facility still used static lookup tables at each participating node.
However computers access Internet devices by their IP addresses. The Domain Name System DNS is the phonebook of the Internet. Domain Name is a symbolic string associated with an IP address.
The explanation of this function can be by comparison with a telephone information service that has current contact data and provides them when someone requests them.
Thanks to DNS you can visit a website by typing in the domain name rather than the IP address. For example when a Web address URL is typed into a browser DNS servers return the IP. The domain name system DNS is a naming database in which internet domain names are located and translated into internet protocol addresses. The domain name system maps the name people use to locate a website to the IP address that a computer uses to locate a website.