If you had the PAN no. of the company, to confirm the correctness of the PAN no. you can go to e-Payment option in the "incometaxindiaefiling.gov.in" website and enter the PAN no. with you and fill up the mandotory field with some dummy data and select any one of the Bank. Immediately it gives the name of the assessee as per Income tax Department's record.
In case you did not have PAN no. of the company, you can find out the pan in the above website under the service option, know your pan. But, you should know the date of incorporation of the company. Enter name of the comapny only in "Surname" area and enter the date of incoporation in the dd-mm-year format, you will get the PAN.