If your certificate number has the format xxxx-xxx-xxx-xxxx-xxxx (4 dashes), use this form to validate the certificate. Otherwise, use the older method located here. Certificate Lookup Use this form to find a certificate by its unique number or a user's id. Enter a Certificate Number*Certificate numbers come in two different formats. xooo-xxx-xxx-xxxx and xooo-xxx-xxx-xxxx-xxxx. You must enter the complete certificate number.