Certificate Transparency
by the numbers.
A live snapshot of the public CT corpus indexed by CT Radar. Sourced directly from public Certificate Transparency log operators — canonical, not crowdsourced.
Records indexed
4,194,789,873
4.19B · live
Certificate authorities
1,337
distinct issuers
Segments on disk
148
LSM tree partitions
Charts updated
36m ago
daily snapshot
New certificates per month
Issuance volume from CT logs, last 24 months. Each bar counts certificates whose notBefore falls in that month.
Top certificate authorities
Issuers ranked by number of certificates in our index. Long names truncated for readability.