Live Certificate Transparency

Certificate Transparency Monitor

Tracking 54,626 certificates across 273 domains from the public CT logs (crt.sh). We discover subdomains automatically, track issuer history, and surface shadow IT from cert issuance.

273
Tracked
Domains
54,626
Certs
All time
21,473
Subdomains
Discovered
1
No CT History
Red flag
Clear
Domain Certs Subdomains Active Newest Health Last Check
amazon.com 0 0 0 / 5,953 exp — DOWN
Last updated Oct 20, 2026 11:27 UTC · Sitemap · API · Data: crt.sh