What is a DNS Server?

A DNS server takes a specific domain name, finds the appropriate IP address, and returns the information to the web browser that made the request.

How does a DNS server work?

When you enter a URL into a web browser, the browser forwards this request to your DNS server. If your DNS server has that URL’s IP address cached, that information is relayed back to the browser. If it doesn’t, your request goes to a DNS root name server, then to a top-level domain (TLD) server, and finally to the authoritative DNS master root server. If the IP address is found at any of these servers, it is immediately sent back to the web browser, where the appropriate website is displayed.