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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  • The details registered about me/my company are incorrect or out of date.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

Visit SIDN at Cybersec Netherlands 2025

SIDN BrandGuard takes pride of place on our stand

Photo of a speaker on stage at Cybersec Netherlands 2023
  • Friday 22 August 2025

On 10 and 11 September, we’re present at Cybersec Netherlands in Utrecht’s Jaarbeurs for the second year in a row. Cybersec is the event for cybersecurity professionals in the Netherlands, with keynote presentations by experts including Jake Moore, Bert Hubert and Onur Kurucu. You’ll find us on stand 11.B038, where we’ll be demoing SIDN BrandGuard, our solution for detecting and dealing with domain name abuse and online trademark infringement.

European regulations and digital autonomy centre stage

The cybersecurity world is highly dynamic. Central themes of this year’s Cybersec include the forthcoming Cyber Security Act and digital autonomy. Both make good management of domain names and other digital assets more important than ever. On our stand we’ll be showing how SIDN BrandGuard can help you take firm control of your domain name portfolio and prevent online abuse of your brand.

Impression of the Cybersec Netherlands trade fair floor

Speaker: Michiel Henneke

Our Marketing Manager, Michiel Henneke, will be making a presentation that picks up on the event’s central theme. On each day of Cybersec, Michiel will talk about the role of domain name management and brand protection in the prevention of phishing and in compliance with the new European rules. His session will be packed with insights and practical tips.

Lunch sessions on the Digital Decade

In line with Michiel’s message, we’re teaming up with our legal partner ICTRecht to organise exclusive lunch meetings for our business relations on Wednesday 10 and Thursday 11 September. At the meetings, Martijn Sanders (SIDN) and Johnny Honing (ICTRecht) will explore the practical and legal impact of the new law and regulations. The venue is Villa Jongerius, a short walk from the Jaarbeurs.

Interested?

Are you a cybersecurity professional interested in attending Cybersec Netherlands 2025? Register using this link. Are you an SIDN business relation who likes the sound of the lunch sessions? Drop a line to Peter Rotgans (peter.rotgans@sidn.nl).

We look forward to seeing you there!

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