For consultation with service personnel, 24-hour customer service line: 0800-022-120 (free of charge), customer service mailbox: firstname.lastname@example.org
A Digital Certificate is an identity of individual person or organization issued by CA for PKI application.
It contains the following information:
Certificate serial number and edition
name or code of person or entity holding the certificate effective date and expiration date certificate timing (application scope)
Public key issuing unit