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SIDN

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

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About SIDN

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

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

Categories & features

Rankings

As of 2026-10-05. Organic ranks only; sponsored placements are never ranks.

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