DNS Made Simple

When you use the Web or send an e-mail message, you use a domain name to do it. For example, the URL "" contains the domain name duodesign.co.uk.

Names like "duodesign.co.uk” are easy for people to remember, but they don't do computers any good. Computers use names called IP addresses to refer to one another. For example, the site that people refer to as "www.duodesign.co.uk" has the IP address 216.183.103.155 . Every time you use a domain name, you use the Internet's domain name servers (DNS) to translate the human-readable domain name into the computer-readable IP address. Below is a diagram to explain how this works.