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Frequently asked questions

  • I am looking for a domain name registrant. Where can I look it up?

    The Whois is an easy-to-use tool for checking the availability of a .nl domain name. If the domain name is already taken, you can see who has registered it.

    On the page looking up a domain name you will find more information about what a domain name is, how the Whois works and how the privacy of personal data is protected. Alternatively, you can go straight to look for a domain name via the Whois.

  • I would like to transfer my domain name to another registrar. What is the procedure?

    To get your domain name transferred, you need the token (unique ID number) for your domain name. Your existing registrar has the token and is obliged to give it to you within five days, if you ask for it. The procedure for changing your registrar is described on the page transferring your domain name.

  • The details registered about me/my company are incorrect or out of date. How can I get them updated?

    To update the contact details associated with your domain name, you need to contact your registrar. Read more about updating contact details.

  • Why is my domain name in quarantine?

    When a domain name is cancelled, we aren't told the reason, so we can't tell you. You'll need to ask your registrar. The advantage of quarantine is that, if a name's cancelled by mistake, you can always get it back.

    One common reason is that the contract between you and your registrar says you've got to renew the registration every year. If you haven't set up automatic renewal and you don't renew manually, the registration will expire.

  • Ik heb een klacht over mijn provider/registrar. Kan ik daarvoor bij SIDN terecht?

    Wanneer je een klacht hebt over of een geschil met je registrar dan zijn er verschillende mogelijkheden om tot een oplossing te komen. Hierover lees je meer op pagina klacht over registrar. SIDN heeft geen formele klachtenprocedure voor het behandelen van een klacht over jouw registrar.

  • What conditions do I have to meet as a registrar?

    Would you like to be able to register domain names for customers or for your own organisation by dealing directly with SIDN? If so, you can become a .nl registrar. Read more about the conditions and how to apply for registrar status on the page becoming a registrar.

More frequently asked questions

Requesting registrant details

Do you want to view the full contact details that we have on file for you – the ones that aren't visible in the Whois? To request your full registrant details, simply fill in the form below. We'll give you access to the data, so you can decide who you want to share it with.

As the registrant of a .nl domain name, you sometimes need to prove that you are actually the registrant of that domain name. For example, if you want to transfer your domain name. Enter your domain name below, plus your e-mail address and postcode, as known to your current registrar / hosting service provider. We'll then send you two links: one to use yourself and one for sharing with your registrar or another organisation. Note: it is possible that this e-mail ends up in your spam, so also check your spam folder.

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You can check your administrative contact's e-mail address in the Whois (sidn.nl/whois). To do that, enter your domain name in the search bar, check and then click 'Show me the details'. Once you've agreed to the terms and conditions, you'll be shown your administrative contact's e-mail address, where we'll send the registrant details.
Enter the postcode of your registrant address, as known to your registrar.
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Is the registered e-mail address or postcode wrong or out of date?
Please contact your registrar and ask them to change it.

Is your domain name in quarantine?

Send an e-mail to support@sidn.nl with contact details and the domain name as the subject. Also send the following information as known to your current registrar: your name, the domain name, the e-mail address and postal code.
Thanks for requesting your .nl registrant details. We'll send a confirmation e-mail the administrative contact e-mail address and to the registrants e-mail address. The mail will contain two links for viewing the contact details: one that you (the registrant) can use, and one that can be passed on to your registrar.

Please note that, for security reasons, each link can only be used once. If the e-mail addresses and/or postcode are old ones, or not yours, please contact your registrar. Your registrar can update your e-mail address and/or postcode. If this doesn't work, you can also contact SIDN. Complete the Request for contact details form and send it to support@sidn.nl along with a copy of your passport or other ID document. We advise to use the KopieID app of the Government of the Netherlands.