Every server in the world that has access to the internet has at least one IP ADDRESS—to a computer, this is like a phone number. An example of an IP Address is 741.125.45.100.
Instead of having to remember a bunch of numbers, domain names allow us to assign a name to those numbers. Without domain names, you would have to enter an IP address every time you wanted to visit a website. Isn’t google.com much easier to remember than 74.125.45.100?
Domain names contain letters, numbers and hyphens. They can be hundreds of characters in length, but the shorter the domain the better.
In order for your computer to figure out what IP address to use for a domain name, it has to connect to a nameserver also called a DNS Server. That server connects to another server, which connects to another, and so on, until a server is encountered that knows the right IP address for the domain name.
When you purchase a domain name, you tell the domain registrar that all requests for an IP address for that domain name should be directed toward your hosting providers nameservers.
Once you’ve informed your web host of the domain you plan to use, they’ll configure their nameservers to give your domain name a specific IP address.
Usually, you’ll share an IP address with many other domain names. You can also purchase a dedicated IP address from your web host, and that will be yours alone to use. Whichever the case, the important thing is that you have an IP address assigned to your domain, and that all the right nameservers know what it is.
Domain names and how they work
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