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.
a-cdn.anthropic.com
classified as cdn · 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 medium — classification split: anthropic=first-party, openai=cdn, gemini=cdn. A human reviewed this domain's claims before anything here published.
Anthropic Claude — first-party
a-cdn.anthropic.com is a subdomain of anthropic.com, the domain matching the app's own publisher (bundle id com.anthropic.claude), so it is first-party infrastructure; the 'a-cdn' hostname suggests it serves as an asset/content delivery endpoint, though its exact function is not verifiable from the data given. A first-party connection of this kind is consistent with the app's declared collection categories, so nothing here implies an undisclosed data flow.
OpenAI — cdn
The a-cdn subdomain naming strongly suggests a content-delivery endpoint operated under Anthropic's own domain, though ownership is not provided. A CDN contact alone does not establish a data flow beyond the app's broad declared collection and sharing categories.
Google Gemini — cdn
The domain a-cdn.anthropic.com is a first-party content delivery network domain belonging directly to the app developer, Anthropic. This operational contact supports standard first-party functionality and does not indicate an undisclosed third-party data flow.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
| Claude by Anthropic | — | 3 | 3 | 2026-07-29 |
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