About.

Who operates ctlogs.dev, the legal notice and how visitor data is handled.

The service

ctlogs.dev is a search engine over the public Certificate Transparency record: it continuously ingests every public CT log into a single index and makes billions of TLS certificates searchable by domain, organization, serial number or fingerprint. The service is owned and operated by APPS34, a French software company.

Legal notice

Éditeur. APPS34 — société à responsabilité limitée (SARL) with a share capital of €5,000, registered with the Montpellier Trade and Companies Register (RCS) under number 944 081 553. Siège social: 48 Rue Claude Balbastre, 34070 Montpellier, France. TVA intracommunautaire: FR65 944 081 553. Contact: [email protected].

Hébergeur. Hetzner Online GmbH, Industriestr. 25, 91710 Gunzenhausen, Germany.

Privacy

ctlogs.dev sets no cookies and runs no analytics or tracking scripts of its own. Your IP address is used transiently for rate limiting and appears in server logs only as a truncated hash; search queries are logged for operations. The site is served through Cloudflare and loads web fonts from Google Fonts, so those providers see standard request metadata such as your IP address; origin infrastructure is hosted by Hetzner in Germany. Questions: [email protected].