PAN:

Permanent Account Number (PAN) is unique alphanumeric combination issued to all juristic entities identifiable under the Indian Income Tax Act 1961. This number is mandatory for filing you Income Tax Return with the Department of Income Tax, for financial transactions such as opening a bank account, receiving taxable salary or professional fees, sale or purchase of assets above specified limits. The primary purpose of PAN is to bring a universal identification key factor for all financial transactions and indirectly prevent tax evasion by keeping a track of monetary transactions of high net worth individuals.

The central government has introduced a new online service called "Know Your PAN" to verify or validate new and existing PAN numbers, which can be done by visiting :

Know your PAN.

PAN Status Track via Tax Information Network.

Warning : Holding two PAN’s is against the Law. If you have been inadvertently allotted two PAN’s, you may retain any one of the numbers and surrender the other through a letter addressed to your jurisdictional Assessing Officer.

There is also an online facility made available by the Income Tax Department for PAN surrender.

Click here to surrender your PAN online.