You can use this form as a simple way of obtaining the status of a D-TRUST certificate. All you need is the serial number in decimal or hexadecimal form of the certificate and the issuing CA.

Click the "Continue" button in order to obtain information concerning the status of the certificate.

If you wish to use an application of your own to obtain the status, please use the following addresses:
OCSP via http: http://ocsp.d-trust.net:80
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OCSP via TCP/IP: ocsp://ocsp.d-trust.net:9000