What is a Domain Name and Why Would I Want One?

In this article we will cover the basics of what a domain name is, how they work and why you need to have at least one. I am going to try and avoid complicated computer terms and stick to explanations that should be easily understood by someone without a computer science degree.

What is a Domain Name? Before we can go into what a domain name is I'm going to tell you why we need them as the answers compliment each other. The Internet is just a really big collection of connected computers (a network). For the purpose of explaining domain names you can think of the Internet a bit like the phone system and just like the phone system every computer on the Internet has it's own phone number except an Internet phone number is called an IP addresses. This address is made up of up to 12 digits in the form 123.123.123.123, computers use these IP addresses to send information to each other over the Internet.

When the Internet was first created it quickly became clear that these IP addresses were not easy to remember and another method was need to make these addresses more human friendly. The solution to this was the Domain Name System (DNS). Basically the DNS is a really really big phone book for computers. When you type a web site address into your web browser it checks the DNS for that website name and finds the IP address. Once it has the IP address it can then send a message to that computer and ask it for the web page you wanted.

OK so you know a domain name is part of a web site address but which part? Lets look at a website address so we can identify and discuss what bit of it is a domain name.

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