Obtaining certificate chain for irrtweb.org, one moment while we download the irrtweb.org certificate and related intermediate certificates...
Refreshing certificate chain and revocation status for irrtweb.org, one moment while we re-check the irrtweb.org certificate and related intermediate certificates...
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Revocation check via OCSP and CRL for irrtweb.org failed
Sorry, the request for irrtweb.org could not be completed...
We could not load the certificate for irrtweb.org, it might not exist or we could not reach the server, complete the TLS handshake, etc.
Revoked certificates can't and should not be trusted, these certificate will cause errors like "NET::ERR_CERT_REVOKED" in browsers and expose a security risk.