How to Check CNIC Number with Mobile Number in Pakistan

People search for “check CNIC number with mobile number” for very different reasons:

• confirming a SIM is in their own name
• finding their own forgotten CNIC number
• spotting SIMs someone else activated on their ID
• identifying an unknown caller

This guide covers the official way to handle each one. It also explains why the last one is not available to the public, and what to do instead.

Which CNIC or SIM Check Fits Your Situation?

Each service answers a different question, so the right one depends on what you’re trying to find out. Match your situation below to see where to start:

How Do You Check the CNIC Registered on Your SIM?

These methods go from a mobile number to the CNIC behind it. They only work for a SIM you physically hold or can verify yourself as the owner.

Send MNP to 667

1. Open the messages app on the phone with the SIM you want to check.
2. Type MNP in capital letters.
3. Send it to 667.
4. Read the reply, which shows the registered owner’s name and CNIC.

The reply format differs slightly between networks. If nothing comes back within a few minutes, use the helpline method below.

Call Your Network Helpline

Operators confirm the registered owner after verifying the caller. Keep your CNIC with you, since the agent will ask security questions first.

Use Your Operator’s Official App

Each network has its own self-care app where you log in with your number and a one-time code. Account sections typically show the registered details for that connection.

Download the app only from Google Play or the App Store, and check that the publisher is the operator itself. Look-alike “SIM details” apps are a common source of data theft.

How Can You Find Your Own CNIC Number If You Have Forgotten It?

No SMS service returns a CNIC from a phone number alone, except 667 on a SIM that is already registered in your name. If your SIM is in a parent’s or spouse’s name, 667 will show their CNIC, not yours.

Try these instead:

• Check the physical card, a photocopy, or a photo you saved earlier.
• Log in to NADRA’s Pak Identity app, which shows your registered identity documents.
• Look at an old bank statement, utility connection form, or property document.
• Open your FBR IRIS profile, since FBR uses the CNIC as the registration number for individuals.

If you are already registered with FBR, you can also verify your NTN online by CNIC to confirm the record.

How Do You Check All SIMs Registered on Your CNIC?

These checks start with your CNIC and show every SIM issued against it, including any you never activated. Run one every few months, and right away if you lose your phone or your ID card.

Send Your CNIC to 668

1. Open the messages app on any phone.
2. Type your 13-digit CNIC with no dashes or spaces.
3. Send it to 668.
4. Read the reply, which lists how many SIMs are registered on each network.

A small per-message charge applies, deducted from your balance.

Use the PTA SIM Information Portal

1. Open cnic.sims.pk.
2. Enter your CNIC without dashes.
3. Complete the captcha.
4. Submit to see SIMs on your ID by operator.

Take a screenshot of the result. It is useful to show at a franchise if you need to block a number.

Visit a Franchise for the Full List

The 668 reply and the portal show counts by network. To see which specific numbers are on your ID, visit that operator’s customer service centre with your original CNIC. Staff will verify your fingerprint and show the numbers linked to you.

Can You Check SIM Owner Details for Someone Else’s Number?

No. Searches for “SIM owner details,” “Pak SIM data,” or “check SIM owner name” lead to sites and apps that claim to show any caller’s name, CNIC, and address. That data does not come from any public source.

Subscriber records belong to the operators and are shared with PTA for regulatory use only. In July 2026, the National Cyber Crime Investigation Agency arrested three suspects in Lahore after a PTA complaint about a network selling SIM ownership details, call records, and family registration data. Cases like this are registered under the Prevention of Electronic Crimes Act 2016, as amended in 2025.

Using these services carries two risks. You may be handling stolen data, and anything you type in, including your own CNIC, goes to the people running them.

What to Do About an Unknown or Harassing Caller

• Block the number on your phone and keep screenshots of calls and messages.
• File a complaint on PTA’s consumer complaint portal at complaint.pta.gov.pk for spam, fraud, or nuisance calls.
• For fraud, threats, blackmail, or impersonation, file with NCCIA at nccia.gov.pk, or call its helpline at 051-9106691.
• Give your bank the NCCIA reference number if money was involved.

Only law enforcement, acting through legal process, can obtain the owner’s identity from the operator.

What to Do When an Unknown SIM Appears on Your CNIC

Whatever is done through a SIM is legally traced back to the CNIC holder. A SIM you did not activate needs to be removed quickly.

1. Note which network the extra SIM belongs to from the 668 reply or the portal.
2. Visit that operator’s franchise with your original CNIC.
3. Ask staff to show the number and confirm you did not activate it.
4. Request that the SIM be blocked and disowned from your CNIC.
5. Keep the complaint or reference number.
6. Recheck through 668 after a few days to confirm the count dropped.
7. If the SIM was used for fraud, file a complaint with NCCIA.

PTA allows a maximum of five SIMs per CNIC across all networks. An unknown SIM uses up one of your five, so you may not be able to get a new connection until it is blocked.

How to Transfer a SIM into the Right Name

Many households have SIMs registered on one person’s CNIC but used by someone else. This causes problems with tax deductions, SIM blocking, and legal responsibility.

Transfer Between Living Owners

Both the current owner and the new owner normally need to visit the operator’s franchise together, each with an original CNIC, and complete biometric verification. The SIM then moves to the new owner’s CNIC and counts toward their five-SIM limit.

Postpaid connections usually need outstanding bills cleared first.

Transfer After the Owner Passes Away

PTA’s 2026 amendment to the subscriber verification regulations, notified through SRO 1519(I)/2026, sets out the process. Operators send an SMS to every SIM registered on a deceased person’s CNIC. If ownership is not transferred within 60 days, those SIMs are blocked.

PTA lists four core documents for transfer to a legal heir:

• Family Registration Certificate (FRC)
• Death certificate of the SIM holder
• The original SIM card
• Proof of SIM usage

Only eligible heirs, such as a spouse or close blood relative, can take ownership. Operators add their own requirements.

Zong asks for a valid CNIC of the heir and an FIR if the SIM is lost. Ufone may ask for a succession certificate and NOCs from other heirs. Call the helpline before visiting so you bring everything in one trip.

How Can Overseas Pakistanis Check SIMs Registered on Their NICOP?

NICOP holders carry the same 13-digit identity number as a CNIC, so the 668 check and the PTA portal work the same way.

If you are abroad and a family member uses a SIM in your name, run the 668 check periodically. Any SIM blocking or tax action tied to that number lands on your record, not theirs.

How Your SIM and CNIC Affect Your Tax Status

FBR uses the same identity that your SIM is registered on. Three tax issues come up most often.

SIM Blocking for Non-Filers

FBR has used SIM blocking against people it considers liable to file returns but not filing. The SIM targeted is the one registered on your CNIC, whoever happens to use it. You can check the FBR SIM block list to see if your name appears.

Checking Your Filer Status by SMS

Type ATL, a space, and your 13-digit CNIC, then send it to 9966. FBR’s official ATL check replies with your name, registration number, and Active or Inactive status. You can also check your tax filer status online.

An Inactive status raises costs on banking, property, and vehicle transactions. This guide to filer vs non-filer rules covers the differences.

Advance Tax Certificates and Your NTN

Operators deduct advance income tax on mobile usage and issue certificates against the registered owner’s CNIC. If your SIM is in someone else’s name, the deduction sits in their tax record. Once it is in your name, you can request your certificate from your network:

• Get your Jazz tax certificate
• Get your Zong tax certificate
• Get your Ufone tax certificate
• Get your Telenor tax certificate

For individuals, the CNIC also serves as the NTN. If you are new to FBR, start with how to get your NTN from CNIC and the steps to become a tax filer.

How Can You Protect Your CNIC from SIM Misuse?

Most SIM fraud starts with a copied CNIC or a misused fingerprint, not a hacked phone. A few habits close off the most common gaps:

• Run the 668 check every few months and after losing a phone.
• Never send photos of your CNIC to unknown callers, couriers, or social media accounts.
• Give fingerprints only at official franchises and authorised retailers.
• Move SIMs used by relatives or staff into their own names.
• If a caller claims to be from a bank, NADRA, PTA, or FBR, hang up and call the official number yourself.

Frequently Asked Questions

SIM kis ke naam par hai, kaise check karein?

Jis SIM ko check karna hai usi se MNP likh kar 667 par SMS karein. Reply mein registered naam aur CNIC aa jayega. Apne CNIC par kitni SIMs hain yeh dekhne ke liye CNIC number bina dash ke 668 par bhejein.

Can police or FBR find the CNIC behind a number?

Law enforcement agencies can obtain subscriber details from operators through a legal process. That access is not available to private individuals or businesses.

Does the 668 check show SIMs on a NICOP?

Yes. NICOP holders use the same 13-digit identity number, so sending it to 668 or entering it on cnic.sims.pk works the same way.

What happens to SIMs on a deceased person’s CNIC?

Under PTA’s 2026 rules, operators notify those SIMs by SMS. If a legal heir does not complete the change of ownership within 60 days, the SIMs are blocked.

Can I transfer a SIM to my name without the owner present?

Generally no, if the owner is alive. Both parties usually need to be present with original CNICs for biometric verification. Separate rules apply when the owner has passed away.

Will blocking an unknown SIM affect my other numbers?

No. Blocking is done number by number. Your other SIMs stay active.

Why does 667 show my father’s CNIC instead of mine?

Because the SIM is registered on his CNIC. Advance tax on that SIM goes to his record, and he remains legally responsible for it. A change of ownership at the franchise fixes this.

Get Help with Your Filer Status

If your 9966 reply shows Inactive, or your SIM appears on an FBR block list, the fix starts with a filed return. Our team handles income tax return filing, NTN registration, and ATL inclusion for salaried individuals, freelancers, overseas Pakistanis, and business owners. See the full range of taxation services we offer.

You can also follow the steps to file your income tax return yourself, or request a consultation. A consultant will confirm the scope and fee before any work begins.