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  • The details registered about me/my company are incorrect or out of date.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

IPv6 may be less familiar than IPv4, but it isn't more complicated

RIPE NCC makes ample IPv6 instruction material available online

Close-up of the acronym IPv6 on a screen
  • Tuesday 10 November 2020

Getting to grips with IPv6 technology is not fundamentally harder or easier than getting to grips with IPv4. The main difference between the two is the addressing system. Nevertheless, IPv4 is the starting point for most network operators, certainly the more established ones. Similarly, the longer a network has been around, the more likely it is to have been based on IPv4 originally and to have developed organically since.

One thing that can make the implementation of IPv6 challenging is the variety of transition mechanisms for interaction between IPv4 and IPv6 via NAT systems or tunnels. Various commercial factors need to be considered when deciding which mechanism to use. Several candidate transition mechanisms are described in a previously published article. Whether you have the luxury of being able to create a completely new IPv6 network (typically parallel to an existing IPv4 network in a dual-stack configuration) or you are employing one of the transition mechanisms, careful preparation is vital. One point to consider is where you should use which address blocks (subnets). Although an IP Address Management (IPAM) system can help with the actual attribution and management, it's still necessary to draw up an addressing plan based on the IPv6 address blocks (prefixes) assigned to you and the architecture of your existing network infrastructure.

Training courses

In recent years, a large amount of training material has been published to guide you through the process, particularly by the RIRs responsible for attributing address blocks to internet access providers (LIRs). Here is a list of IPv6 training courses that RIPE NCC has made available online: