Looking up a domain name

What is a domain name and what rules apply? To check whether a domain name's available, use the Whois. If a domain name's already in use, the Whois will give details.

Registering a domain name

You register a domain name through a registrar. Read how you do that and what you should consider, e.g. securing your domain name.

Updating your registration

If your registration needs updating, you do that through your registrar. Use the links for details of the different types of update.

Read the latest news about domain names

Secure your domain name

Your own domain for your brand, city or region?

Amsterdam (.amsterdam), Berlin (.berlin), Catalonia (.cat) and Friesland (.frl) already have their own domain name extension for their city or region. And major brands such as BMW, Philips & Wolters Kluwer are also ahead of you. From 2021 we expect that it will be possible to apply for a so-called geo-TLD or brand-TLD. SIDN will be happy to help you with the application and to run your TLD.

Zelf registrar worden

Wil je zelf je domeinnamen registreren dan kun je registrar worden bij SIDN.

What are the benefits?

  • You can register domain names with us directly.

  • You can use the Whois more often and you can get more detailed information from it.

  • You will be invited to useful and enjoyable events.

  • Access to our SIDN Academy, educational materials on technical applications.

However, there are conditions and costs involved. Read all information about becoming a registrar

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