Recently, Minister of State for Finance Santosh Kumar Gangwar in a written reply informed the Rajya Sabha that as on July 27, 11,44,211 PANs have been identified and deleted or de-activated in cases where multiple PANs were found allotted to one person.
A person cannot hold more than one PAN. A penalty of Rs. 10,000 is liable to be imposed under section 272B of the Income-tax Act, 1961 for having more than one PAN.
If a person has been allotted more than one PAN then he should immediately surrender the additional PAN card(s).
To check whether one's PAN is active or in an inactive stage, here's the process.
Just in case, you have forgotten the PAN or want to locate the jurisdiction officer address, the link above may help you in locating them.
The facility to delete or de-activate the PAN is available with the Assessing Officer through application software.