An update on Google-hosted Mirrors

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Philippe Boneff

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Jan 6, 2026, 11:30:02 AM (2 days ago) Jan 6
to Certificate Transparency Policy

Hello,


Following up on Filippo's great work archiving old logs to the Internet Archive, we will turn down the Mirrors hosted on Google's infrastructure over the next few days. You can now fetch these logs directly from the Internet Archive.


Thanks again Filippo! I'm happy to know that historical CT data remains available, and can be fetched with a simpler API.


Over the last few years, we gradually stopped mirroring new logs on Google's infrastructure. Moving forward, we will not bring up new Mirrors. Logs operators can now archive their own logs on the infrastructure of their choice using https://github.com/geomys/ct-archive when they cease growing.


Cheers,

Philippe

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