What Is the Quad9 DNS Server?


Larry Thompson

What Is the Quad9 DNS Server?

The Quad9 DNS server is a free, secure, and privacy-focused Domain Name System (DNS) service that offers enhanced protection against malware and phishing attacks. DNS is responsible for translating domain names into IP addresses, allowing users to access websites by typing in a memorable name instead of a series of numbers.

How Does the Quad9 DNS Server Work?

The Quad9 DNS server works by filtering out known malicious domains from the internet’s vast DNS infrastructure. When you use the Quad9 DNS server, your device sends a request to resolve a domain name, and Quad9 checks its extensive threat intelligence database. If the requested domain is flagged as potentially harmful or suspicious, Quad9 blocks the connection, preventing you from accessing the malicious content.

Why Choose the Quad9 DNS Server?

There are several reasons why you might want to consider using the Quad9 DNS server:

  • Enhanced Security: By using Quad9, you add an additional layer of protection against malware infections and phishing attempts. It helps keep your devices safe from accessing malicious websites that could compromise your data.
  • Privacy-Oriented: Unlike some other public DNS servers, Quad9 does not collect or store any personally identifiable information about its users. Your online activities remain private when using this service.
  • Faster Browsing: The Quad9 infrastructure is designed to provide fast response times by leveraging strategically placed servers worldwide. This speeds up your browsing experience compared to relying on your Internet Service Provider’s default DNS servers.
  • Easy Setup: Configuring your devices to use the Quad9 DNS server is straightforward and can be done in just a few steps. You can set it up on your computer, smartphone, or even your home router to protect all devices connected to your network.

How to Set Up the Quad9 DNS Server?

To start using the Quad9 DNS server, follow these simple steps:


  1. Open the Control Panel and navigate to “Network and Internet. “
  2. Click on “Network and Sharing Center.

  3. Select your active network connection (Ethernet or Wi-Fi).
  4. Click on “Properties” and then select “Internet Protocol Version 4 (TCP/IPv4). “
  5. Click on “Properties” again.
  6. In the new window, select the option to use custom DNS servers.
  7. Enter the Quad9 DNS server IP addresses: 9.9.9 and/or 149.112.112
  8. Click “OK” to save the changes.


  1. Open System Preferences and click on “Network.”
  2. Select your active network connection (Wi-Fi or Ethernet).
  3. Click on “Advanced.”

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