Quad9

Quad9

Quad9 is a free DNS resolution service that focuses on privacy and security. It blocks access to known malicious sites to protect users from threats.
Quad9 image
dns privacy security

Quad9: Free DNS Resolution Service for Privacy & Security

Quad9 provides a free DNS resolution service, blocking malicious sites to protect users from online threats, focusing on privacy and security.

What is Quad9?

Quad9 is a free, recursive, anycast DNS platform that provides endpoint protection, as well as DNS resolution. Quad9 blocks against known malicious domains to prevent users from accessing phishing, malware, ransomware and other types of malicious sites.

The service is operated by the Packet Clearing House, the Global Cyber Alliance, IBM Security and other cybersecurity organizations. Quad9 resolves DNS queries through 9.9.9.9 and other IP addresses.

Some key features of Quad9 include:

  • Blocks access to known malicious domains
  • Prevents DNS-based exfiltration and credential theft
  • Easy to enable on most devices by changing the default DNS server settings
  • Does not collect or sell personal identifiable information
  • Capability to uncover previously unknown threats by analyzing domain name lookups

Overall, Quad9 aims to improve end user cybersecurity and privacy just by using their DNS resolution service instead of other options.

Quad9 Features

Features

  1. DNS resolution service
  2. Blocks access to known malicious sites
  3. Encrypts DNS traffic
  4. Does not collect or sell user data
  5. Available globally

Pricing

  • Free

Pros

Improved privacy and security

Easy to set up and use

Free service

Backed by major cybersecurity organizations

Cons

May block some legitimate sites

Limited configuration options compared to other DNS services


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