Quad9 OverviewUNIXBusinessApplication

Quad9 is the #4 ranked solution in top Managed DNS tools and #5 ranked solution in top Internet Security tools. PeerSpot users give Quad9 an average rating of 7.0 out of 10. Quad9 is most commonly compared to Cloudflare DNS: Quad9 vs Cloudflare DNS. Quad9 is popular among the large enterprise segment, accounting for 52% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a comms service provider, accounting for 31% of all views.
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What is Quad9?

Quad9 is a free, recursive DNS service that replaces your ISP's or company's default domain name server (DNS) settings. Quad9 blocks lookups of malicious host names from an up-to-date list of threats when your computer makes any internet transaction that uses the DNS.

This blocking action protects your computer, mobile device, or IoT systems against a variety of risks, including malware, phishing, spyware, C2 command-and-control domains, exploit kit-compromised sites, and botnets. It can also boost performance while ensuring privacy.

Quad9’s service uses threat intelligence from a variety of sources, including:

  • Cisco
  • F-Secure
  • Netlab
  • IBM X-Force
  • Anti-Phishing Working Group (APWG)

Quad9 employs DNSSEC, which assures that the results supplied are accurate. It also filters out websites that have been categorized as hazardous using blacklists provided by various security suppliers.

Quad9 supports DNS over TLS (DoT) and DNS over HTTPS (DoH). It’s been increasingly obvious in recent years that standard DNS has significant security flaws due to a lack of encryption. As a result, it is more susceptible to DNS hijacking. Quad9 users are effectively protected from cyber criminals as well as government censorship.

The Quad9 service is run by the Quad9 Foundation, a non-profit organization based in Switzerland whose purpose is to make the internet a safer and more reliable place for everyone.

Quad9 Features

Quad9 has many valuable key features. Some of the most useful ones include:

  • Privacy: Quad9 is the custodian of a worldwide DNS infrastructure that allows people to communicate and participate in governance and civil society more easily. Quad9 protects their users' privacy by not collecting personal data; Quad9 protects their consumers' privacy by preventing connections between their devices and harmful Internet sites. Quad9 provides users with performance by placing servers in hundreds of communities all over the world to deliver service on a local level. Because of their non-commercial position, they are able to give equal emphasis to regions that are otherwise underserved.
  • Addresses: Quad9 offers a number of distinct recursive DNS service options. Each has its own IP address (or, in certain situations, hostname), which you may use to configure your devices.
  • Threat blocking: Both commercial and publically available threat intelligence feeds have been merged by Quad9. Each was picked based on its shown ability to identify threats and provide a comprehensive set of capabilities for detecting exploits, malware, ransomware, spyware, and other potentially hazardous websites. Quad9’s threat intelligence (TI) partners provide us with data on feeds that are rapidly updated and dispersed as new domain-based risks emerge, and these domains or hosts are updated in their lists.
  • Locations: Quad9 systems are available in more than 150 places in 90 countries, with significant expansion planned. Quad9's servers are primarily positioned at internet exchange points, which are the locations with the highest concentration of interconnections within a typical network region.
Quad9 Customers

CISCO, Netlab, proofpoint

Quad9 Video

Quad9 Pricing Advice

What users are saying about Quad9 pricing:
"The price of Quad9 is free."

Quad9 Reviews

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Benoit Tellier - PeerSpot reviewer
IT Telehealth Specialist at Clinical & Support Options
Real User
Top 5Leaderboard
No maintenance required, free service, but more free features would help
Pros and Cons
  • "The most valuable feature of Quad9 is that it is a free solution."
  • "Quad9 could improve by having more free features, such as custom DNS filtering."

What is our primary use case?

We were using Quad9 to prevent our users from accidentally landing on suspicious websites.

What is most valuable?

The most valuable feature of Quad9 is that it is a free solution.

What needs improvement?

Quad9 could improve by having more free features, such as custom DNS filtering.

For how long have I used the solution?

I have been using Quad9 for a month.

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January 2023
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What do I think about the stability of the solution?

Quad9 is stable.

What do I think about the scalability of the solution?

We have approximately 700 people using the solution. The solution is being used throughout our company. 

How are customer service and support?

Quad9's website is functional enough to retrieve the information needed for what we use it for in the free service.

Which solution did I use previously and why did I switch?

I have not used another solution other than Quad9.

How was the initial setup?

The initial setup of Quad9 was simple and can be done within one hour.

What about the implementation team?

We did the implementation of Quad9 in-house. The solution does not require any maintenance.

What was our ROI?

Quad9 is a free solution, therefore we have seen a return on inventment.

What's my experience with pricing, setup cost, and licensing?

The price of Quad9 is free.

Which other solutions did I evaluate?

We evaluated other solutions before selecting Quad9, such as OpenDNS. OpenDNS was bought by Cisco and turned into another solution called Cisco Umbrella, which is now a premium service. We chose Quad9 over it because it's free.

What other advice do I have?

My advice to others is to spend the money and get something better.

I rate Quad9 a seven out of ten.

Which deployment model are you using for this solution?

Public Cloud
Disclosure: I am a real user, and this review is based on my own experience and opinions.
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Updated: January 2023
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Buyer's Guide
Download our free Managed DNS Report and find out what your peers are saying about Quad9 DNS, Cloudflare, Google, and more!