What Is a Domain Name and How Does It Work?

Updated: 11 October 2026

A domain name is the address of your website and email on the internet, such as ucartz.com. It is easier to remember than the numeric IP address of the server, and you can move it to a new server without changing the address people use.

How it works

• You register a domain through a registrar for a year or more and renew it to keep it.
• The domain's nameservers decide which DNS service answers for it. The DNS records then point the domain to your web server (A records) and mail server (MX records).
• The last part is the extension (TLD): generic ones such as .com and .net, or country ones such as .in and .co.uk.

Rules for names

• Letters, numbers and hyphens only; no spaces, and not starting or ending with a hyphen.
• Up to 63 characters before the extension.
• Not case-sensitive: Example.com and example.com are the same.

You can search for and register domains at Ucartz, and point them to your hosting with the nameservers in your welcome email.