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  • The details registered about me/my company are incorrect or out of date.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

Drills help organisations prepare to fend off DDoS attacks

SIDN takes part in National Anti-DDoS Coalition DDoS drill

Black computer keyboard with the words DDOS attack on the enter key
  • Wednesday 25 May 2022

Cybercriminals and other malicious actors are continually trying to disrupt our digital society. One way they do that is by launching 'distributed denial-of-service attacks' against online services. Known as DDoS attacks for short, they involve a network of computers all sending huge amounts of data to a server at the same time. Unable to process the tsunami of incoming data, the targeted server either is forced offline for a while, or becomes virtually unreachable for legitimate users.

Practice

Reducing the economic impact of DDoS attacks through anti-DDoS coalitions Developing and running a testbed for the DDoS Clearing House

How can resilience against DDoS attacks be maximised? One good way is to get together with other organisations and practise fending off an attack. And that's what members of the National Anti-DDoS Coalition did last weekend during their biannual DDoS drill in Apeldoorn.

Fighting DDoS together

The National Anti-DDoS Coalition is group of organisations that work together to defend against DDoS attacks. Its members include government agencies, internet access providers, internet exchanges, academic centres, non-profit organisations and banks. The Coalition's purpose is to investigate and counter DDoS attacks from various angles.

Attack and defence

ICT Architect Marc Groeneweg acted as SIDN's game leader for the drill. "It's good to see the attacking team putting everything into an infrastructure attack, while the defending team works equally hard to fight the attackers off," says Marc. "By bringing the best out of each other, the participants help to boost the resilience of our services.”