What is the DNS

What is the DNS?
The Domain Name System is a system without which the rest of the Internet doesn’t work. Without the DNS, typing in www.netnod.se or any of the other names you use on a regular basis would get you nowhere.

When using the Internet, users access resources using names. For example, if you were to go to Netnod’s website, you would go to www.netnod.se. However, the computers that make up the Internet know these resources instead by numeric addresses. They see www.netnod.se as either or 2a01:3f0:1:3::109, depending on which version of the Internet protocol they’re using. That name to number translation is done by the Domain Name System, or DNS.

Read or download (PDF): Netnod Fact Sheet - What is the DNS?