9.9.9.9
Free DNS security for agencies, municipalities, and public organizations. Quad9 automatically blocks access to domains linked to malware, phishing, and botnets — before threats reach your agency’s network. One DNS configuration change. No procurement process. No cost. Quad9 for Government Quad9 automatically prevents access to domains linked to malware, phishing, and botnets. Updated continuously from 35+ threat intelligence partners — blocking at the DNS level before a connection is ever made. No personal user data is collected or stored. Quad9 operates under Swiss Federal Data Protection law and is designed to be GDPR-compliant — meeting public-sector privacy requirements out of the box. A single DNS configuration change deploys Quad9 across your entire agency network. No hardware, no software, no licensing fees. Free and easy to set up. With 260+ resolver locations in 115+ countries, Quad9 delivers secure, reliable DNS worldwide. The Swiss Government has partnered with Quad9 to enhance cyber resilience for international organizations. The Swiss Government partnered with Quad9 to enhance cyber resilience for international organizations. That model can be replicated for national and local agencies at any scale. Quad9 is a nonprofit operating in the public interest — with no commercial agenda, no personal data collection, and no cost to deploy. Cyberattacks don’t spare schools. Quad9 blocks malicious domains before students and staff can reach them — protecting every device on your network with a single DNS configuration change. No budget required. Quad9 for Schools Quad9 checks every DNS lookup against threat data from 35+ intelligence partners — blocking domains linked to malware, phishing, and ransomware before any connection is made. Always on, always updated. Quad9 collects no personalprivate user data — which means no student data, no staff browsing profiles, and nothing to breach. Operates under Swiss Federal Data Protection law, designed to be GDPR-compliant. A single DNS configuration on your network resolver protects every connected device instantly. No hardware, no software, no cost. 260+ resolver locations in 115+ countries, positioned at Internet Exchange Points for low-latency performance. The internet is a critical resource for education — Quad9 helps keep it safe. The Swiss Government partnered with Quad9 to enhance cyber resilience for international organizations. That model can be replicated for national and local agencies at any scale. Quad9 is a nonprofit operating in the public interest — with no commercial agenda, no personal data collection, and no cost to deploy. Ransomware and phishing attacks start with a DNS lookup. Quad9 checks every lookup in real time — blocking known malicious domains before they reach your network or your systems. One DNS change. No cost. No contract. Quad9 for Businesses Quad9 checks every DNS lookup against threat data from 35+ intelligence partners — blocking domains linked to malware, phishing, and ransomware before any connection is made. Always updated, always on. A single DNS configuration change deploys Quad9 across your organization. Protects every networked device — without hardware, software, or licensing fees. A single DNS configuration on your network resolver protects every connected device instantly. No hardware, no software, 260+ resolver locations in 115+ countries, positioned at Internet Exchange Points. Anycast routing delivers queries to the nearest available system — automatically. 260+ resolver locations in 115+ countries, positioned at Internet Exchange Points. Anycast routing delivers queries to the nearest available system — automatically. Ransomware and phishing attacks start with a DNS lookup. Quad9 intercepts that lookup before a connection is ever made — blocking the threat at the DNS level, before it reaches your network or your systems. One DNS configuration change. No hardware. No ongoing cost. Note for CMS: Healthcare-specific regulatory compliance language (e.g. HIPAA) should be reviewed by legal before publishing. No such claims are made in this draft. Quad9 has several service configurations for recursive DNS — each with a different IP address. Choose the profile that matches your requirements, including options for DNSSEC, ECS, DoH, DoT, and DNSCrypt. Step-by-step configuration instructions for common network devices, operating systems, and enterprise environments. Quad9 operates 260+ resolver locations in 115+ countries, positioned primarily at Internet Exchange Points. Search any domain to verify whether Quad9 is blocking it — useful for investigating block events or confirming accessibility. Quad9 publishes a full Transparency Report covering how the service operates, how blocking decisions are made, and how requests from governments and law enforcement are handled. Contact the Quad9 team with configuration questions, integration requirements, or operational issues.
Free DNS security for agencies,
municipalities, and public organizations.
Deploy for Your Agency
Blocks Cyber Threats at the Source
How threat blocking works
Privacy-First, Compliance-Ready
Read about privacy
Seamless, Zero-Cost Deployment
See setup guides
Proven at Scale, Globally
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The Swiss Government chose Quad9.
Yours can too.
Contact us to discuss collaboration
Take action today.
Free, privacy-first DNS security for educational institutions.
Set Up for Your School
Blocks Malware and Phishing
How threat blocking works
No User Data Collected
Read about privacy
Zero Cost, Simple to Deploy
See setup guides
Reliable Infrastructure Worldwide
View Quad9 locations
The Swiss Government chose Quad9.
Yours can too.
Contact us to discuss collaboration
Take action today.
Free DNS security for healthcare organizations.
Get Started
Blocks Ransomware and Phishing
How threat blocking works
No User Data Collected or Stored
See setup guides
Zero-Cost, Zero-Friction Deployment
See setup guides
High-Availability Infrastructure
View Quad9 locations
DNS-layer protection
for healthcare networks.
See how to set up Quad9
Deploy Quad9 for your organization today.
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