SIDN’s main role is acting as the ‘registry’ for .nl – the Netherlands’ country-code top-level domain (ccTLD). The .nl domain is widely recognised as one of the world’s best ccTLDs. Using the knowledge and experience gained in our main role, SIDN also provides ‘registry services’ for other top-level domains, such as Aruba’s country-code domain .aw. We provide management solutions for trust frameworks as well. We are also active in the development of products and services that contribute to internet security. See what SIDN can do for you or your organisation.


This user-friendly security service that provides the reassurance you need to get on with running your business. CyberSterk gives you a clear picture of your company's e-security status, without miring you in the technical details.

Domain Name Surveillance Service

With the monitoring service DBS, you get advance warning when a domain name is registered that's like your brand name. So you can take action before an attack even starts.

Domain Name Portfolio Checker

The Domain Name Portfolio Checker (DPC) puts you back in control. It provides a full breakdown of your .nl domain names, with details of the registrar that manages each one.

.nl Control

With .nl Control, you have extra control over your domain name. No important changes can be made without first being approved by you or your agent.

Registry services

We also manage other top-level domains, such as .amsterdam and .aw. And keep an eye on new developments about brand and geo domain names. Click below for details.

  • Tuesday 26 November 2019


    SIDN launches user-friendly security solution for SMEs


    CyberSterk from SIDN detects e-security flaws and guides business users to solutions

    Read more
  • Wednesday 13 November 2019


    SIDN continues as registry service provider for .amsterdam

    dot Amsterdam logo

    New five-year deal agreed with city authority

    Read more
  • Tuesday 3 September 2019


    SPIN now ready for production use


    Next moves are up to the community and market players

    Read more


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