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What is a domain name?

A domain name is the memorable address people use to reach a website or send email. It replaces a numerical IP address with something that can be printed on a shop window, read over the phone and kept when the website moves to another server.

example.com contains more than one decision

In example.com, example is the chosen label and .com is the top-level domain. Replace .com with .pl, .de or .uk and you are dealing with a different registry, a different contract and sometimes a different registration structure. Britain, for example, offers both company.uk and company.co.uk; Germany normally places registrations directly under .de.

Anything to the left of the registered name is controlled by its holder. If you own example.com, you can create shop.example.com, mail.example.com or hundreds of other subdomains without buying each one from a registrar. They are DNS entries, not separate registrations.

A domain, hosting and email are three separate services

Registering a name does not put a website online. Hosting stores the pages and applications. A mail provider receives messages. DNS connects the public name to both services. This separation is useful: a business can move its website from one hosting company to another and keep the same domain and email addresses.

A common real-world mistake is to let a web agency register the domain in its own account. The website may belong to the client, but the login, renewal notices and transfer code then remain with the agency. The registrant field should name the person or company that is meant to control the address.

What happens after you press “register”

The registrar sends the request to the registry responsible for the extension. If the registry accepts it, the name enters its authoritative database and is delegated to name servers. Registration is time-limited. Many domains are renewed annually, although available periods and expiry procedures depend on the extension.

You are buying a contractual right to use the name, not a piece of property forever. If renewal fails, the domain may stop resolving, enter a recovery stage and eventually return to the public pool. The exact timetable for .com must not be copied to .pl or .uk; each registry publishes its own policy.

A quick check before choosing the address

Say the complete name aloud, including the extension. Type it on a phone. Check the matching spelling in search results and trademark databases. Finally, compare the renewal price rather than only the first-year promotion. A name advertised for one euro can cost many times more in year two; the renewal column in the price list is the figure that matters to a long-running project.

Reviewed: 28 August 2026 · DomainsNavigator Editorial Team