Download affected certificate serials for 2020.02.29 CAA Rechecking Incident Last updated: Mar 3, 2020 This page hosts the list of affected serial numbers and a hostname checking utility for the incident reported at https://community.letsencrypt.org/t/2020-02-29-caa-rechecking-bug/114591. We have sent notification emails to affected subscribers who have registered an email address. If you need to