Quad9

Windows · Mac · Linux · Android · iPhone

Freedom report

Three barsScore 6.7

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely5 of 6 device platforms
DocumentedPlans, terms and facts published

Quad9 is ranked #3 of 28 in DNS filtering software on Freedom251. It runs on Android, iOS, Linux, macOS, Windows. There is a free plan.

Quad9 plans and pricing

All plans

Quad9 DNS service Free free for everyone · no contract · no sign-up process quad9.net · 1 Oct 2026

Compared on DNS filtering software

Free plan: Yes

Best Quad9 alternatives

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Two bars AdGuard DNS Free tier No. 1Free6.8 Two bars NextDNS Free tier No. 2£1.79/mo6.7 Two bars Technitium DNS Server Free tier No. 4Free6.6 One bar AdGuard Paid plans No. 5—5.8 One bar CleanBrowsing Paid plans No. 6$6.25/mo5.8 One bar Control D Paid plans No. 7$2/mo5.8

The record

Service: Quad9 is a free, recursive, anycast DNS platform providing security, performance, and privacy.
Threat blocking: Quad9 blocks DNS requests for domains associated with malware, viruses, adware, phishing, and scams.
Threat intelligence: Quad9 combines data from more than 20 threat intelligence partners to identify malicious domains.
Encryption: Quad9 supports DNS over TLS, DNS over HTTPS, and DNSCrypt.
DNSSEC: Quad9 provides DNSSEC validation on its resolver services.
Privacy: Quad9 does not store end-user IP addresses and is governed by Swiss privacy law.
No content filtering: Quad9 does not offer content filtering and focuses on blocking malicious domains.
Platforms: Setup guides are provided for Mac, Windows, Linux, iOS, and Android, with an Android app available.
Integrations: Quad9 documentation includes guides for Cloudflared, Pi-hole, and open-source routers including pfSense, OPNsense, OpenWrt, MikroTik RouterOS, and IPFire.
Support: Quad9 support assists with setup questions and issues through its support team.
Reliability: Quad9 reports 99.999% uptime for its global anycast service.
Large-scale use: ISPs, service providers, and other large organizations are asked to contact Quad9 before sending large-scale DNS traffic.
Threat-data partnerships: Quad9 shares anonymized volumetric information and rough threat geography with threat intelligence partners.
Audience: Quad9 is intended for everyone from home users to large-scale enterprises.
Price from: Free

Where it ranks on Freedom251

Best DNS Filtering Software in 2026#3 of 28

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Sources

quad9.net/about/· checked 1 Oct 2026
docs.quad9.net· checked 1 Oct 2026
quad9.net/service/service-addresses-and-features/· checked 1 Oct 2026
quad9.net/support/faq/· checked 1 Oct 2026
quad9.net/about/partners/· checked 1 Oct 2026
quad9.net/news/blog/quad9-public-domain-name-serv· checked 1 Oct 2026
quad9.net· checked 28 Sept 2026