LetsEncrypt CAA bug revocation check

Check your domain certificate against 2020.02.29 CAA bug.

This tool will allow you to determiante if you need to replace your SSL / TLS certifiate / check if your domain or certificate serial number has been affected by CAA bug and needs to be replaced to avoid interuptions. At the time of writting 23.659.138 domains are parsed from the database.
You can read more Official LetsEncrypt Blog SERVICE STATUS PAGE.

In short, Security issue has been identified in situations of issuing multiple certifiates where CAA check has been performed number of times for the first domain only. Security issue is affecting around 2.6% of active certificates according to best knowledge so far, and such certificates needs to be revoked and re-issued. If you are on the list, please renew your certificates as soonest.

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