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SIDN

Dutch registry for the .nl domain, also running security services, research and a social fund

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TrustList summary

SIDN is the registry behind the .nl domain. It keeps .nl names reachable, makes sure email to .nl addresses is delivered, and looks after the stability of the domain.

What SIDN offers

  • Domain registration: .nl names through registrars, with a tool for suggesting available names.
  • Brand monitoring: SIDN Merkbewaking shows lookalike domain registrations worldwide to protect against phishing.
  • Registrar education: an academy that helps registrars adopt secure internet standards.
  • Research: SIDN Labs develops technology for DNS and internet stability and security.
  • Social funding: SIDN Fund backs projects on internet use and its side-effects.

Key facts

  • Scale: more than five million registered .nl names
  • Digital identity: services built on secure domains and identities

Summary written by TrustList from the business's own published information, Oct 2026.

Categories & features

SIDN rankings

SIDN is ranked on 1 TrustList ranking at #12.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. SIDN has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

It service provider · 1 ranking

  • #12of 22
    Ios app › Netherlands

    It is one of 3 here listing CSS and one of 4 here listing CMS.

    Of the 22 here, 19 also cover web development and 13 also cover mobile app development; 2 also work in Ahmedabad and 4 also work in United Kingdom.

    Behind Wolters Kluwer, ahead of Initworks B.V..

As of 2026-11-15. Organic ranks only; sponsored placements are never ranks. How TrustList ranks

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