Pakistan Telecommunication Authority has officially announced online SIM ownership verification service. The subscribers of any cellular company operating in Pakistan can check the number registered on their names by two ways. Either online SIM information system of PTA or sending CNIC number at 668.
All you need to just type your CNIC/NADRA ID Card Number in write message box and have to send it to 668. After this you will get the details of how much SIM card are issued on your CNIC. You can also block any number that you think has been illegally registered on your CNIC. You have to just visit the nearby franchise of your company and have to fill a SIM block form.
For more details, contact at your SIM provider help number. help number of cellular companies are as follows:
Telenor: 111-345-100 or 345
Warid: 111-111-321 or 321
Mobilink: 111-300-300 or 111
Zong: 111-222-111 or 310
Ufone: 111-333-100 or 333
If you want to check online then click here and insert your CNIC number without dashes.