This guide covers checking all SIMs registered on your CNIC — the 668 SMS service, the PTA online portal, identifying unauthorised registrations, and immediate response steps.

Step 1

Check All SIMs via SMS to 668

PTA's official SIM ownership check service: send your 13-digit CNIC number (no dashes or spaces) as an SMS to 668 from any Pakistani mobile phone. The reply within 1-2 minutes shows the total number of active SIMs registered against your CNIC and identifies which mobile operator each belongs to. This service is free — your standard outgoing SMS rate may apply for the message you send to 668.

Step 2

Detailed Check via PTA Online Portal

For a more detailed listing: go to pta.gov.pk then Consumer Corner then SIM Information System. Log in with your CNIC number and a one-time verification code sent to a phone number you can access. The portal shows each SIM registered to your CNIC with the operator name and the registration status — more detail than the 668 SMS reply provides.

Step 3

Identify Any Unauthorised SIM Registrations

Carefully review every SIM listed in the 668 reply or PTA portal. Any SIM from a mobile operator you've never subscribed to, or any number you simply don't recognise, indicates that someone fraudulently registered a SIM using your CNIC identity. This typically happens through identity theft, operator retail employee misconduct, or registration using a photocopied or forged CNIC document. Note the operator name and any partial number for the blocking complaint.

Step 4

Act on Fraudulent Registrations Immediately

For every unrecognised SIM found on your CNIC: call the relevant operator's helpline and request immediate blocking of the specific fraudulently registered SIM citing identity theft; file a consumer complaint with PTA online at pta.gov.pk with the details; and file a police FIR documenting the identity fraud and unauthorised SIM registration. Taking all three actions simultaneously gives the fastest and most comprehensive resolution.

Device and SIM Problems

668 shows more SIMs than expected but I cannot recall all my numbers

Call the helpline of each operator listed in the 668 reply. With your CNIC, they can tell you the specific registered numbers. Then you can confirm which are genuinely yours and initiate blocking for any that are not.

Sent CNIC to 668 but received no reply after several minutes

Check that you sent from a Pakistani SIM and that the message body contained only the 13-digit CNIC number with absolutely no spaces, dashes, or other characters. Retry after 5 minutes. If consistently no reply, check your SIM's messaging service isn't blocked.

Frequently Asked Questions

Most cases involve operator retail staff misconduct using customer CNIC copies, use of stolen biometric data in isolated incidents, or registration with forged CNIC documents. Regular checks via 668 allow rapid detection and response.

Yes — the 668 service accepts any valid CNIC number. You can send your parent's CNIC to 668 and review the results on their behalf. This is a useful routine check to perform for elderly relatives who may not manage their own telecom security.