How Many SIMs on My CNIC? Check with 668
To check how many SIMs are on your CNIC, send an SMS with your 13-digit CNIC number (no dashes) to 668. The reply shows how many active SIMs are registered to your ID card on each network. If you see a SIM you don't use, get it blocked at that network's franchise.
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This works from any Pakistani mobile number.
- Open your messages app.
- Type your 13-digit CNIC number without dashes.
- Send it to 668.
- You will get a reply listing how many SIMs are registered on that CNIC, by network.
🔑 The key point
The SMS carries a small charge set by PTA and the networks.
Use only 668 — avoid "SIM owner details" websites
Many websites and apps claim to show "SIM owner details" or the SIMs on a CNIC. They are not needed and are best avoided: they often show wrong data, and some collect the CNIC and numbers you type in. Stick to the 668 SMS. For anything more — seeing the actual numbers on your CNIC or blocking one — visit your network's franchise with your original CNIC.
⚠️ Careful here
Never type your CNIC into a website or app you found through an ad or a forwarded message.
Why you should check your SIMs
A SIM registered on your CNIC is legally linked to you. If someone else is using a SIM in your name — a forgotten old number, or one issued without your knowledge — it could be used for scam calls or fraud that leads back to your ID card. Checking takes a minute; do it every few months.
Found a SIM you don't recognise?
Act quickly.
- Note which network the unknown SIM is on.
- Visit that network's franchise or customer service centre with your original CNIC.
- Ask them to show the numbers on your CNIC and block the one you don't use (biometric verification is needed).
- Check 668 again a few days later to confirm it is gone.
Old SIMs you no longer use
Old numbers you have stopped using still count against your CNIC until they are deactivated. If you don't need them, get them blocked the same way, so nobody else can use them in your name.
Keep your number safe
Never share a one-time code (OTP) sent to your phone, even with someone claiming to be from a bank, a network or a shop. Scammers use OTPs to take over WhatsApp and wallet accounts.
More on staying safe online: How to Spot a Fake Online Seller in Pakistan. Buying a used phone? How to Check if a Mobile Is PTA Approved. Network codes are in Balance Check Code: Jazz, Zong, Telenor, Ufone.
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Frequently asked
How can I check how many SIMs are on my CNIC?
Send your 13-digit CNIC number without dashes to 668. The reply lists the SIMs on your CNIC by network.
What is 668?
668 is PTA's official SMS service that tells you how many SIMs are registered on a CNIC.
How to check sim owner details?
Avoid "SIM owner details" websites and apps. Send your CNIC to 668 to see how many SIMs are on it, and visit your network's franchise with your original CNIC to see the numbers or block one.
Does 668 show the phone numbers?
It shows how many SIMs are on your CNIC for each network. To see the actual numbers and block one, visit that network's franchise with your CNIC.
How do I block a SIM on my CNIC?
Visit the network's franchise or customer service centre with your original CNIC; they will verify you biometrically and block the SIM.
Is the 668 SMS free?
No, it carries a small charge set by PTA and the networks.