An open DNS recursive service for free security and high privacy

Quad9 is a free DNS service operated by the Swiss-based Quad9 Foundation that blocks malicious websites and protects devices from malware, phishing, and other threats while maintaining strict privacy by never logging user IP addresses. The service processes over 670 million daily blocks through 230+ resolver clusters across 110+ countries and is designed to be GDPR-compliant, prioritizing user privacy over data commercialization. Unlike other DNS providers, Quad9's founding charter makes privacy a primary goal, with the organization committed to keeping personal data under user control.