Data disclaimer

The statistics are observational and should be interpreted with their technical limitations.

No guarantee of completeness

Coverage depends on public log availability, published log lists, network access and collectors' progress. A log can be delayed, temporarily unavailable or retired. The figures start from the displayed collection date and are not a complete history of Certificate Transparency.

Estimation error

Distinct counts are probabilistic estimates. The stated error is a statistical expectation, not a maximum bound. Small movements can be measurement noise rather than real ecosystem change.

No security conclusion

A logged certificate is not proof of compromise, authorisation, current use or universal trust. Conversely, the absence of a name or certificate from these aggregate figures is not proof that it has never been logged.

No professional advice

The site does not provide legal, compliance or security advice. Independently verify material decisions against authoritative log, certificate authority and domain data.