"In a Central Bank of India passbook, the CIF (Customer Information File) number is located on the first page of the passbook. This page usually contains key details about the account holder, such as their name, account number, branch details, and CIF number. The CIF number is a unique identifier for the customer profile within the bank database. Suppose you cannot find the CIF number in your passbook. In that case, it is advisable to contact your branch for assistance or check any bank statements or official correspondence from the bank, as the CIF number is often mentioned in these documents. "
