A person who intends to validate a certificate may request to certify that the certificate is valid (that is, the certificate is not revoked or suspended) at the specific time via online access to the Certification Center. If a certificate is revoked or suspended, it is possible to request the time and reason for revocation or suspension.
Details of procedures are as follows.
(i) When the certificate has not been either revoked or suspended, "The certificate has not been invalidated";
(ii) When the certificate has been revoked, "The certificate was revoked on xxx xx, 19xx because of ."
(iii) When the certificate has been suspended, "The certificate has been suspended".