This page aggregates measured, corroborated evidence: donors' iPhones recorded apps contacting this domain, every claim below was reported by separate accepted donations and published under a human verdict (later rows for an approved app inherit its verdict). A contact is a measurement, not an accusation — it does not show what data was sent.
dns.quad9.net
classified as unknown · 2
What our research panel found AI-drafted · human-reviewed
We ask several independent AI models the same question and publish their answers separately — cross-vendor agreement is evidence against fabrication, and disagreement is worth seeing. 3 of 3 models answered, overall confidence high. A human reviewed this domain's claims before anything here published.
Anthropic Claude — unknown
dns.quad9.net is the endpoint of Quad9, a public recursive DNS resolver (operated by the nonprofit Quad9 Foundation) offering DNS-over-HTTPS/TLS; it is not an advertising, analytics, or tracking endpoint, and it is not owned by Ookla, so none of the available categories fit cleanly. A network-diagnostic app plausibly contacts public resolvers for DNS latency/resolution testing, and a DNS lookup does not by itself imply collection of user data by the developer, so I cannot conclude the contact is undisclosed.
OpenAI — unknown
The provided data does not identify the domain owner or establish the purpose of this DNS contact, so its role is ambiguous. With no evidence of a data flow beyond DNS resolution, undisclosed collection or sharing cannot be determined.
Google Gemini — unknown
dns.quad9.net is operated by Quad9, a non-profit public DNS service used for domain name resolution and network utility. Because it functions as core network infrastructure rather than a tracking, advertising, or analytics service, its contact does not indicate undisclosed data collection.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
| Speedtest by Ookla | — | 4 | 5 | 2026-07-28 → 2026-07-29 |
| Proton Mail: Encrypted Email | — | 3 | 3 | 2026-07-30 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
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