Updated May 2025
SIM Owner Details in Pakistan — How to Check Who a Number Belongs To (Legally)
The complete, legally accurate guide to checking SIM registration details in Pakistan — what PTA allows, what is not permitted, and the exact 668 method explained step by step.
How to Check Your Own SIM Owner Details (PTA 668 Service)
Pakistan Telecommunication Authority (PTA) operates an official free SMS service that allows any Pakistani mobile subscriber to check which SIM cards are registered under their CNIC. This is the only legal, direct method for SIM registration enquiry available to private individuals.
Send your 13-digit CNIC number (no dashes) to 668 from any Pakistan mobile
Free service — available 24/7 on Jazz, Zong, Ufone, and Telenor
668 service covers all four networks simultaneously: A single SMS to 668 returns SIMs across Jazz, Zong, Ufone, and Telenor in one response. You do not need to contact each operator individually. This is the only service that gives cross-network visibility on a single CNIC.
Can You Check Someone Else’s SIM Owner Details in Pakistan?
Legal Boundary — The Most Important Section on This Page
PTA’s 668 service returns only the SIMs registered under the CNIC of the person sending the SMS. It does not allow you to check who owns a specific mobile number that belongs to another person.
Attempting to obtain another person’s SIM registration details through technical or social means (without their consent or a legal authority) falls under Pakistan’s Prevention of Electronic Crimes Act 2016 (PECA) and the Telecommunications Act. This includes SIM swap attacks, social engineering telecom staff, and any method that bypasses authorised channels.
The correct legal path: law enforcement agencies can request SIM owner details from PTA with a court order or official authorisation under Section 54 of the Pakistan Telecommunication (Re-organisation) Act 1996. Private individuals have no legal mechanism to access another person’s SIM registration data.
PTA’s SIM Verification Process — How Registration Works
Every SIM issued in Pakistan since the PTA biometric mandate of 2014–2015 must be registered under a valid CNIC with biometric fingerprint verification. The process works as follows:
| Step | Who Does It | What Happens |
|---|---|---|
| SIM purchase at franchise | Customer + franchise staff | Customer presents original CNIC; staff enters CNIC number into PTA’s SIM registration system |
| Biometric fingerprint capture | Customer (at biometric device) | Customer places finger on biometric reader; fingerprint is verified against NADRA’s database in real-time |
| NADRA verification | NADRA (automatic) | NADRA confirms the fingerprint matches the CNIC; sends confirmation to PTA’s system |
| SIM activation | Network (automatic) | PTA records the SIM IMSI number, CNIC, date, and network operator; SIM becomes active |
| Ongoing monitoring | PTA | PTA monitors SIM usage; unregistered or fraudulently registered SIMs are blocked |
What Information Is Stored Against a SIM Registration
Subscriber Data
Full CNIC number, name as per NADRA, registered address (from CNIC), date of birth, biometric fingerprint confirmation timestamp.
SIM Data
Mobile number (MSISDN), network operator, SIM serial (ICCID), registration date, franchise location code, SIM type (prepaid/postpaid).
SIM Owner Details for Lost or Stolen SIM Recovery
If your SIM is lost or stolen, the registered CNIC owner retains full rights to the mobile number. The process for recovering the number requires visiting a franchise of the same network with your original CNIC. The franchise performs biometric verification and issues a replacement SIM with the same number.
SIM swap fraud warning: SIM swap fraud — where an attacker convinces your network operator to transfer your number to a new SIM — is Pakistan’s most prevalent telecom fraud. Signs include: your SIM suddenly losing signal without explanation, receiving confirmation SMS for requests you did not make, or being locked out of your bank’s OTP-based authentication. If this happens, call your telecom helpline immediately (Jazz 111, Zong 310, Ufone 333) and your bank’s fraud line.
Legal Boundaries — What PTA and PECA Allow
| Action | Legal Status | Authority Required |
|---|---|---|
| Check own SIM registrations via 668 | Legal — fully permitted | None — self-service |
| Block unrecognised SIM on own CNIC via operator | Legal — fully permitted | Original CNIC at franchise |
| Check another person’s SIM owner details | Not permitted for private individuals | Court order required for LEAs |
| SIM swap (legitimate — lost SIM recovery) | Legal with CNIC + biometric | Original CNIC at franchise |
| Social engineering a telecom agent to reveal SIM data | Illegal — PECA 2016 Section 3 | N/A |
| Law enforcement SIM data request | Legal with proper authorisation | Court order or ministerial order |
SIM Owner Details FAQs
How do I check which SIMs are registered on my CNIC?
Send your 13-digit CNIC number (without dashes) as an SMS to 668 from any Pakistani mobile number. PTA’s system returns a list of all SIMs registered against your CNIC across all networks (Jazz, Zong, Ufone, Telenor) within 30 seconds. This service is free.
Can I find out who owns a specific mobile number in Pakistan?
No. PTA does not provide a public service to check the registered owner of another person’s SIM. Checking another person’s SIM registration details without their consent or a legal authority order is not permitted under Pakistan’s Telecommunications Act. The 668 service only returns SIMs registered to the CNIC of the person sending the SMS.
What information is stored in PTA’s SIM registration records?
PTA stores: the subscriber’s full CNIC number, CNIC-linked name (as per NADRA records), date of SIM registration, network operator (Jazz, Zong, Ufone, Telenor), and mobile number. The registered address from NADRA is also linked. Biometric fingerprint confirmation is recorded for SIMs activated after PTA’s 2015 biometric mandate.
What is SIM swap fraud and how does it relate to SIM owner details?
SIM swap fraud occurs when an attacker convinces a telecom operator to transfer (swap) your mobile number to a new SIM they control. Once they have your active number, they can receive OTPs and access your bank accounts. SIM swap is the most common fraud involving SIM ownership in Pakistan. Signs: your SIM suddenly loses signal without reason. Immediately call your telecom helpline and your bank if this happens.
How can I block SIMs registered on my CNIC that I didn’t activate?
Use PTA’s Device Verification System (DVS) portal at pta.gov.pk to block SIMs registered to your CNIC. First, use the 668 service to identify all SIMs on your CNIC. Then contact the respective telecom operator (Jazz 111, Zong 310, Ufone 333) with your CNIC to request deactivation of any SIM you did not register.
How do law enforcement agencies access SIM owner details in Pakistan?
Under Section 54 of the Pakistan Telecommunication (Re-organisation) Act 1996, law enforcement agencies (Police, FIA, ISI, NACTA) can request SIM registration data from PTA with a legal authorisation — court order or official request under national security provisions. This process is not available to private individuals.
Can someone check my SIM details using my CNIC without my knowledge?
No. PTA’s 668 service sends results only to the mobile number that sent the SMS — not to the CNIC holder’s number. Someone knowing your CNIC cannot use 668 to see your SIMs from their own phone; the results go to the requesting number, not to you. However, physical CNIC misuse at a telecom franchise for fraudulent SIM registration is a separate risk — safeguard your CNIC carefully.
What is the maximum number of SIMs I can have in Pakistan?
PTA allows a maximum of 5 SIMs per CNIC per network. Across all four networks (Jazz, Zong, Ufone, Telenor), the total SIM cap per CNIC is determined per-network, not in aggregate. This means a subscriber can theoretically hold up to 20 SIMs in total (5 per network × 4 networks), although this is unusual.