SIDN

Technology, Information and InternetGelderland, Netherlands51-200 Employees

SIDN is a technology and internet infrastructure organization based in Arnhem, Gelderland, Netherlands. It operates the .nl domain by registering names and ensuring they resolve for users worldwide, handling a vast daily volume of search queries and supporting reliable email delivery. The organization develops services and solutions built on secure domains and digital identities to support safer and more convenient online life.

Its customers include domain registrants and internet users around the world, with a primary focus on the stability and accessibility of the .nl ecosystem and its DNS. SIDN Labs conducts research to devise new technologies and systems that improve the resilience and security of the .nl domain, the DNS, and broader internet infrastructure. Through the SIDN Fund, the organization supports social initiatives aimed at promoting internet use and addressing related negative effects.

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