How to proof/check if a certificate was revoked

I issued several certificates using certonly, now I want to revoke the older one:

  1. how can I do/proof/check that?
  2. if I renew a certificate is the older one automatically revoked?
  3. Is there a certification revocation list in place?

well there is no CRL but an OCSP.

here’s an example that is even using LE.

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No, renewals do not automatically revoke old certificates.

You can upload the certificate to to check its revocation status. Note that you have to manually revoke the certificate using the client software. It won't happen automatically.

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