What is domain name server or DNS?
DNS is the short for Domain Name System (or Service or Server), an Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they’re easier to remember. The Internet however, is really based on IP addresses.
Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. For example, the domain name www.cavsi.com might translate to 184.108.40.206.
A domain name is translated in huge tables standardized across the Internet into a numeric IP address unique the host computer sought. These tables are maintained on computers called “Domain Name Servers.”
Whenever you ask the browser to find a URL, the browser must consult the table on the domain name server that particular computer is networked to consult.