In today’s digital world, mobile phone SIM cards are directly linked to our identity. In Pakistan, every SIM card must be registered against a valid CNIC (Computerized National Identity Card) issued by NADRA. While this system helps improve security and reduce fraud, it also makes it very important for citizens to regularly check how many SIMs are registered on their CNIC. Check SIMs on CNIC: Complete Guide to Verify SIMs Registered on Your CNIC in Pakistan
Many people are unaware that extra or unknown SIMs may be registered on their CNIC. These SIMs can be misused for illegal activities, scams, or harassment, which can lead to serious legal trouble for the CNIC holder. This is why checking SIMs on CNIC is not just useful—it is essential.
In this blog post, we will explain what SIM checking on CNIC means, why it is important, how to check SIMs registered on your CNIC, how to block unknown SIMs, and best safety tips to protect your identity.
What Does “Check SIMs on CNIC” Mean?
“Check SIMs on CNIC” means verifying how many mobile SIM cards are registered under your CNIC number. According to PTA (Pakistan Telecommunication Authority) rules, a person can register a maximum of 5 SIMs on one CNIC.
Sometimes, due to carelessness, fraud, or misuse of documents, extra SIMs get registered without the CNIC holder’s knowledge. By checking SIMs on your CNIC, you can:

See the total number of active SIMs
Identify unknown or suspicious SIMs
Take action to block unauthorized SIMs
Why Is It Important to Check SIMs Registered on Your CNIC?
Checking SIMs on CNIC is important for several reasons:
- Prevent Illegal Use
If a SIM registered on your CNIC is used for illegal activities such as fraud, threats, or cybercrime, you may be held responsible.
- Avoid Legal Trouble
Law enforcement agencies trace SIM activity through CNIC records. Unknown SIMs can create serious legal problems.
- Protect Your Identity
Your CNIC is your identity. Any misuse linked to it can damage your reputation and record.
- Stay Within PTA Limits
PTA allows only 5 SIMs per CNIC. Extra SIMs may get blocked automatically.
- Peace of Mind
Knowing exactly how many SIMs are registered on your CNIC gives you confidence and control.
How Many SIMs Are Allowed on One CNIC in Pakistan?
According to PTA rules:
Maximum SIMs per CNIC: 5
These SIMs can be from any network (Jazz, Zong, Ufone, Telenor)
If more than 5 SIMs are registered, the extra SIMs may be blocked by the telecom operator.
How to Check SIMs on CNIC in Pakistan (Official Method)
Method 1: Check SIMs via SMS (Most Common & Easy)
This is the official PTA method and works on all networks.
Steps:
- Open your mobile Messages app
- Type your CNIC number without dashes
Example: 3520112345678
- Send it to 668
- Within a few seconds, you will receive an SMS showing:
Number of SIMs registered
Network-wise details (Jazz, Zong, Ufone, Telenor)
📌 Charges: Usually free or very minimal
📌 Requirement: CNIC must be valid and registered
Method 2: Check SIMs Online via PTA Website
PTA also provides an online SIM information system.
Steps:
- Open your web browser
- Visit the official PTA SIM Information System
- Enter your CNIC number
- Complete the verification (captcha)
- View all SIMs registered on your CNIC
This method is useful if you want a clear, detailed view of your SIMs.
How to Identify Unknown or Fake SIMs
After checking your SIMs, look carefully at the list.
Ask yourself:
Do I recognize all these numbers?
Are all networks familiar to me?
Do I really need all these SIMs?
If you see:
A SIM you never bought
A network you never used
More than 5 SIMs
👉 That SIM may be unauthorized and should be blocked immediately.
How to Block or Remove Unknown SIMs from Your CNIC
If you find any unknown SIM, follow these steps:
Option 1: Visit Customer Service Center
- Go to the franchise or service center of the relevant network
- Take:
Original CNIC
Copy of CNIC
- Tell them you want to block an unauthorized SIM
- They will verify your identity and block the SIM
Option 2: Contact Helpline
You can also call the network’s customer support and request guidance, but most cases require physical verification.
Network Helpline Numbers (Pakistan)
Jazz: 111
Zong: 310
Ufone: 333
Telenor: 345
What to Do If Your CNIC Is Being Misused?
If you suspect serious misuse:
Block the SIM immediately
File a complaint with:
Telecom operator
PTA (if needed)
Keep a record of all communications
This can protect you if any issue arises in the future.
Common Reasons Unknown SIMs Are Registered on CNIC
Giving CNIC copy to unauthorized sellers
Buying SIMs from street vendors
Not blocking SIMs after losing phone
Old SIMs not properly closed
CNIC misuse by fraudsters
Safety Tips to Protect Your CNIC and SIMs
✔ Never share CNIC copy unnecessarily
✔ Avoid buying SIMs from roadside sellers
✔ Block SIM immediately if phone is lost
✔ Regularly check SIMs on your CNIC
✔ Keep your CNIC information private
Frequently Asked Questions (FAQs)
Q1: Can someone register a SIM on my CNIC without my knowledge?
Yes, if your CNIC copy is misused. That’s why regular checking is important.
Q2: Is checking SIMs on CNIC free?
Yes, checking via SMS 668 is mostly free.
Q3: Can I block SIMs online?
No, usually physical verification at the service center is required.
Q4: What if my CNIC has expired?
You must renew your CNIC to manage SIM-related issues.
Final Thoughts
Checking SIMs registered on your CNIC is a simple but powerful step to protect yourself from fraud, legal issues, and identity misuse. With just one SMS or a quick online check, you can ensure that only authorized SIMs are linked to your CNIC.
In Pakistan’s growing digital environment, your CNIC is your responsibility. Make it a habit to check your SIM status regularly and take action immediately if something looks suspicious.