Quad9, a Swiss nonprofit founded in 2016, runs a free, security-focused public DNS resolver that blocks malicious domains. AI-generated from public sourcesThe starting point for every profile: auto-generated by 0-Doubt from public vendor materials, and not yet confirmed by the vendor or an independent analyst. Nothing here is hidden or overstated — it simply has not been reviewed yet.Where every profile starts, before the vendor or an analyst has reviewed it. A higher label means a more independent source — not a better product.How trust works →
IntegrationsUI-12 — integration graphDetected from this vendor's own published integration/partner pages by the enrichment loop — each entry links the exact page it was found on. Directional: "integrates with" is claimed by this vendor; "integrated by" is claimed by the other vendor's site. Coverage grows as the scan progresses.
Trust profileHow to read thisFive separate questions a buyer actually asks, each answered with its own evidence and a link to the source. There is deliberately no overall score: a single number invites comparison it cannot support, and would mostly reflect how much of Quod9 we have managed to scan rather than anything about the vendor.
Not checked means we have not looked yet, and is never counted against a vendor. Limited means we did look, but found only one line of evidence — enough to report, not enough to corroborate.
checked 11 of 16 signals
Limited
Independently verified
Has anyone other than the vendor confirmed this?
checked 3 of 4
Nothing here has been confirmed by an independent third party yet.
No third-party certifications found
Profile not claimed by the vendor
Strong
Operating durability
Is this a real, durable business?
checked 3 of 4
How long this vendor has been operating, and who stands behind them.
Domain registered 2017 — 9 years ago
Security & trust signalsAbout these signalsCertifications are labeled by how well evidenced each one is — confirmed in a public registry, stated by the vendor, or merely detected on a page — and every claim links to its source. Security headers are checked live against the vendor's homepage, re-checked every 90 days. These are independent signals and are not blended into a single score.
9 of 9 technical checks completed — not a score, just coverage
Security headers (4/5) — checked 10/18/2026
✓ Strict-Transport-Security
✓ Content-Security-Policy
✕ X-Frame-Options
✓ X-Content-Type-Options
✓ Referrer-Policy
✕ security.txt
Infrastructure & transparency signals
Domain since 2017DNSSEC enabledHSTS preloaded
Data coverage: 33/100What this measures (and doesn't)
Not a quality rating or endorsement — a measure of how much verified, disclosed data we actually have about this vendor. A low score usually means "we don't have much verified information yet," not "this is a bad vendor." Never used to sort or rank vendor lists.
The platform admin controls the formula's weights.
Data coverage profileHow to read thisThe same four components behind the data coverage score above, shaped instead of listed — a vendor strong on verification but thin on buyer feedback looks visibly different from one that's the other way around. Security and feedback plot at the neutral midpoint (50) when there's no data yet (no products tracked, no reviews), matching how the actual score itself treats missing data — not a guess either way.
Products (1)
Product information on this page is auto-generated by 0-Doubt from public sources and not yet confirmed by the vendor or an independent analyst, unless an item is individually labelled otherwise. How trust works →
