Chose your color

Frequently visited

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  • The details registered about me/my company are incorrect or out of date.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

Outbound DANE validation support added to Exchange Online

Support for inbound mail to follow hopefully next summer

The Microsoft logo at Microsoft's French headquarters in Issy-les-Moulineaux
  • Wednesday 28 September 2022

In spring of this year, Microsoft enabled DANE validationfor outbound mail traffic. Exchange Online users don't need to change any settings or actively enable the feature. The security check is performed automatically whenever mail is delivered to external mail servers (MX gateways).

DANE for inbound traffic – in other words, the use of DNSSEC and publication of TLSA records for mail – isn't yet supported, even though users have long been asking for it. However, Microsoft says that enabling DANE support for inbound traffic is now planned for next summer.

High adoption in the .nl zone

We started incentivising the use of DANE security for inbound mail in July 2019, through our Registrar Scorecard scheme. As the graph below shows, DANE adoption subsequently increased considerably [1, 2, 3] and now stands at nearly 20 per cent of all registered .nl domains. The high level of DNSSEC support in the Netherlands is of course relevant in that context, since the use of DANE depends on DNSSEC being supported.

Line graph of stats.sidnlabs.nl showing the application of DANE in the .nl domain

Figure 1: The number of .nl domain names with DANE support. (Source: stats.sidnlabs.nl)

Configuring DANE

For anyone interested in securing mail domains and systems with DANE, we've published detailed advice on configuring DANE for both Postfix and Exim. If you need to set up DNSSEC first, we also provide a series of hands-on articles for the most popular DNS servers.

Other useful resources include our E-mail Standards Checklist and Maturity Model for Modern Internet Standards'.