Call respective company''s helpline or UAN given below:

Enter your CNIC Number and will tell you accurate number of SIMS issued on your CNIC.
If the number of SIM Cards are more than you are using, Kindly contact the Customer Service Center of the Respective Cellular Company.
It is very essential to keep the record of all the SIMs issued on your CNIC, though this system cannot tell you the numbers but validates the number of SIMs.
The SIM Card issued on your CNIC might be in wrong hands, so do not delay and spread this to your friends and family members as well to check how many SIMs are issued.

  CNIC Number:
  Example: 6110123456789

Many people in Pakistan keep a variety of SIM cards with them. But the problem arises when they losses any one of it. When they goes to block or for a duplicate at that time some are even unaware of on whose name the SIM card was. The process to know on whose name was the SIM card is very easy.

You just have to send your Computerized National Identity Card (CNIC) number to 668.