Nightroll

Free SSL Certificate Checker

Type a domain to check its certificate.

Your domains

    Domains you checked, with days left. Kept in this browser; click one to re-check.

    How to make an SSL check

    1. Type a domain name.
    2. See whether the certificate is valid, when it expires and who issued it.
    3. Checked domains go on your watch list so you can re-check them later.

    Frequently asked questions

    Is my watch list stored?
    Only in your browser. The check itself is made by Nightroll’s server and nothing about it is kept.
    What counts as a problem?
    An expired or not-yet-valid certificate, a name that does not match, or a chain that does not lead to a trusted authority.