# Quad9

> Source: https://fuckyc.org/services/quad9/
> Website: https://quad9.net/
> Categories: DNS resolvers
> KYC: none — Free public resolver; no account required.
> Status: active
> Jurisdiction: Switzerland (operator-disclosed, non-profit)
> Fiat on-ramp: no
> Founded: 2016
> Open source: no
> Custodial: no
> Last verified: 2026-01-01

## Verdict

Quad9 is the Swiss non-profit no-account public resolver with malware-domain blocking on by default. A good complement to Mullvad DNS as a second option; pick based on whether you want the threat-intel blocking.

## Strengths

- Swiss non-profit operator.
- Blocks known-malicious domains using shared threat-intel feeds.
- DoH/DoT supported; anycast deployment.

## Caveats

- Threat-intel blocking can flag false positives.
- Single-trust-anchor operator model.
- Facts need re-verification by operator (last seeded 2026-01).

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## What Quad9 is

A Swiss non-profit free public DNS resolver.

## Threat-model fit

Default no-account resolver, with built-in threat-domain blocking.

## Sources

- [Quad9 about](https://www.quad9.net/about/) — accessed 2026-01-01
- [Quad9 privacy](https://www.quad9.net/privacy/) — accessed 2026-01-01