Quad9 is a free security solution that uses DNS to protect your system against the most common cyber threats. It improves your system’s performance plus it preserves and protects your privacy.  It’s like an immunization for your computer.


Put your DNS to work today.

Every website has a numerical address – known as an IP (Internet Protocol) address. DNS (Domain Name Server)  is what translates these numerical IP addresses into readable domain names we all know and remember. If your DNS settings are not working correctly, or you’re using the default setting, you may be at risk for cybercrime and performance issues.

What is DNS?

How Quad9 Works

Quad9 routes your DNS queries through a secure network of servers around the globe. The system uses threat intelligence from more than a dozen of the industry’s leading cyber security companies, to give a real-time perspective on what websites are safe, and what sites are known to include malware or other threats. If the system detects that the site you want to reach is known to be infected, you’ll automatically be blocked from entry – keeping your data and computer safe.

Who Should Set Up Quad9?

Setting up Quad9 requires just a simple configuration change. Most organizations or home users can update in minutes by changing DNS settings in the central DHCP server or home internet router which will update all clients and connected devices in a few minutes with no action needed at end devices at all. The service is and will remain freely available to anyone wishing to use it. Here are a few of the benefits:

Increase your security, protect your devices, and reduce your risk of becoming a victim of cyber crime.

Better secure your network, protect your digital assets and customers, reduce the risk of malicious threats such as email fraud, malware and ransomware.

Collaborate with a global community of peers to take action on cybercrime and malware.

APPLIANCE MANUFACTURERS: Ensure your IoT products aren’t putting consumers at risk through unknown vulnerabilities. Block botnet command-and-control requests before they cause harm!

A combined pool of malicious sites from more than 18 leading vendors and sources.

Quad9 does not collect any personally identifiable information.

A global service with an infrastructure to match.

Free and easy to use: 
Free and easy to set up. A few minutes is all it takes to configure your devices.