Since 2006, we have managed the Dutch ENUM zone through a foundation called ENUM NL. In consultation with the Ministry of Economic Affairs and Climate Policy, the activities were brought to a close on 15 December 2017.

Any questions?

Feel free to get in touch if you've got a question. You can reach us on working days between 8am and 6pm (CET) by calling +31 26 352 5555 or mailing


  • Tuesday 16 July 2019

    About SIDN

    SIDN Annual Report 2018: vigorously pursuing our mission

    ar 2018 520x520

    Read our online annual report

    Read more
  • Friday 1 June 2018

    About SIDN

    Malicious website detector wins fourth Dutch Open Hackathon


    CrimeBusterBot voted best of 23 competing teams' creations

    Read more
  • Monday 17 December 2018

    About SIDN

    Guardian360 and SIDN team up to boost security for SMEs


    Better on-line security is urgently needed and attainable

    Read more


Your browser is too old to optimally experience this website. Upgrade your browser to improve your experience.