Checking how many SIM cards are registered against your CNIC is an important part of managing your mobile identity in Pakistan. If you have used several mobile networks over the years, replaced old SIMs, lost a number, or simply want to review your registration record, the 668 SMS service provides a convenient way to check SIM registration information associated with your CNIC.
The basic process is simple: you enter your 13-digit CNIC number without dashes into an SMS and send it to 668. The service can return information about the number of SIMs associated with your CNIC across mobile networks.
The important point is that this service is intended for checking your own CNIC registration information. It should not be treated as a public database for finding another person’s private SIM details, address, CNIC information, or personal identity.
In this guide, Sims Owners Details explains how the 668 SMS service works, what to type, how to send the message, what information you can expect, what to do if the result looks incorrect, and how to escalate a telecom issue through official channels.
668 SIM Check at a Glance
If you only need the quick procedure, follow these steps:
| Step | What to Do |
|---|---|
| 1 | Open the SMS/Messages app |
| 2 | Create a new SMS |
| 3 | Type your own 13-digit CNIC |
| 4 | Do not add dashes or spaces |
| 5 | Enter 668 as the recipient |
| 6 | Send the SMS |
| 7 | Wait for the response |
| 8 | Review the SIM information provided |
The format is:
Your 13-digit CNIC → 668
For example, if a CNIC were represented for demonstration purposes as:
1234512345671
the message would contain the digits only and would be sent to:
668
Do not use a real person’s CNIC in examples, screenshots, public posts, or demonstrations.
What Is the 668 SMS Service?
The 668 SMS service is associated with Pakistan’s SIM registration information system and is used to check SIMs registered against a CNIC.
The purpose is different from a reverse phone-number lookup.
When you check your own CNIC, the service is intended to help you understand whether SIM registrations exist against your identity. The official SIM Information System also provides an online route for checking the total number of SIMs associated with a CNIC. Its current interface asks users to enter their CNIC and displays network-wise SIM counts.
This makes 668 useful when you want to perform a quick check without opening a website.
Why is this useful?
You may want to check your CNIC if:
- You have used multiple SIM cards in the past.
- You recently lost a SIM.
- You replaced an old mobile connection.
- You stopped using a network.
- You are concerned about an unfamiliar registration.
- You want to review your mobile identity records.
- You want to compare your current SIMs with your registration count.
Before You Send the SMS
A successful 668 check starts with entering the information correctly.
Make sure you have:
- Your own 13-digit CNIC number
- A working mobile phone
- An active Pakistani mobile connection
- Enough balance if your operator applies an SMS charge
- The correct shortcode: 668
Most important rule
Enter the CNIC as digits only.
Do not type:
12345-1234567-1
Instead, use:
1234512345671
Avoid adding:
- Dashes
- Spaces
- Extra words
- Your name
- Mobile numbers
- Hashtags
- Other commands
The purpose of the message is to identify the CNIC you want to check.
Step-by-Step: How to Use 668 to Check SIMs
Step 1: Open Your Messages App
Start by opening the standard SMS/Messages application on your mobile phone.
You do not need WhatsApp, Facebook Messenger, Telegram, or a third-party SIM-checking application.
The 668 method is an SMS-based process.
Step 2: Create a New Message
Tap:
New Message
or the equivalent option on your phone.
If your phone has two SIM cards, make sure you know which SIM you are using to send the SMS.
Step 3: Enter Your 13-Digit CNIC
Type your CNIC number into the message field.
Use 13 digits without dashes.
Correct format
1234512345671
Incorrect format
12345-1234567-1
Also avoid adding text such as:
CNIC 1234512345671
unless the current official instructions specifically tell you to do so.
For the standard method described by PTA-related guidance, the CNIC is sent to 668 as the SMS request.
Step 4: Enter 668 as the Recipient
In the recipient field, enter:
668
Double-check the shortcode before sending.
You do not need to enter an international dialing prefix or a regular mobile number.
Step 5: Send the SMS
Press Send.
Your mobile operator processes the outgoing SMS and the service responds with the available SIM registration information.
PTA’s published cybercrime guidance has advised users to periodically check the SIMs issued in their name and specifically references sending the CNIC to 668 for this purpose.
What Happens After Sending Your CNIC to 668?
After your request is processed, you should receive a response containing information related to SIMs registered against the CNIC.
The result is intended to help you understand the registration situation across mobile networks.
For example, an illustrative result might look conceptually like this:
| Network | SIM Count |
|---|---|
| Jazz | 2 |
| Telenor | 1 |
| Ufone | 0 |
| Zong | 1 |
| Total | 4 |
This is only an example. It is not a real user’s result.
Your actual response can be different depending on your registration record and the information available through the service.
What Does a 668 Result Tell You?
The main value of the 668 check is understanding how many SIM registrations are associated with your CNIC.
It is particularly useful for identifying a mismatch between:
SIMs you know about
and
SIM registrations associated with your identity.
For example, suppose you personally use:
- One Jazz SIM
- One Zong SIM
but your registration result indicates a higher number of SIMs than you expected.
That does not automatically prove fraud. However, it gives you a reason to investigate the registration through the relevant operator.
668 Does Not Mean “SIM Owner Database”
This is an important distinction.
Many websites use phrases such as:
- SIM owner details
- SIM database
- CNIC SIM data
- SIM owner name
- SIM owner address
- SIM details by number
These terms can create the impression that a person can enter someone else’s phone number and obtain their private identity information.
The official SIM Information System is not a public directory for exposing another person’s private subscriber information. Its online interface is designed around checking SIM registration counts associated with an identity record.
Therefore, do not treat 668 as a tool for obtaining:
- Another person’s home address
- Another person’s private CNIC record
- Another person’s location
- Private subscriber databases
- Confidential personal information
For privacy and security, use the service to check your own registration information.
668 vs CNIC.SIMS.PK
There are two commonly discussed ways to check SIM registration information associated with a CNIC: the SMS method and the online SIM Information System.
Here is the practical difference:
| Feature | 668 SMS | CNIC.SIMS.PK |
|---|---|---|
| Method | SMS | Website |
| Internet required | No | Yes |
| CNIC required | Yes | Yes |
| Best for | Quick check | Online review |
| Device | Any SMS-capable phone | Smartphone/computer |
| Network-wise information | Available through service response | Displayed online |
| CAPTCHA/verification | No website CAPTCHA | Online verification may be required |
| Good for quick checking | Yes | Yes |
The official SIM Information System currently instructs users to enter their CNIC and submit it to find the total number of SIMs registered against that CNIC.
This means you can choose the method that is more convenient for you.
When Should You Use the 668 Method?
The SMS method is especially useful when you do not have reliable internet access.
For example, you may be:
- Using an older keypad phone.
- In an area with poor mobile data.
- Temporarily without Wi-Fi.
- Checking your CNIC while traveling.
- Trying to perform a quick identity audit.
Because it relies on SMS rather than a web browser, it can be convenient for users who prefer simple mobile services.
When Should You Use the Online SIM Information System?
The online method can be useful when you prefer a browser-based interface.
The current SIM Information System allows a user to enter a CNIC and view the resulting SIM count by network. The displayed result page includes network rows and a total SIM count.
You can use the online system when:
- You have internet access.
- You want to review the result on a larger screen.
- You want to compare network-wise counts.
- The SMS method is not convenient.
- You want to verify the result through another official channel.
What If the 668 SMS Does Not Arrive?
Sometimes an SMS service may not respond immediately.
Do not immediately assume that your CNIC is incorrect.
Try the following troubleshooting steps.
1. Check the CNIC digits
Make sure you entered all 13 digits correctly.
2. Remove spaces and dashes
Use numbers only.
3. Check your mobile balance
If your network applies an SMS charge and your balance is insufficient, the message may not be sent successfully.
4. Check your signal
Poor network coverage can delay SMS delivery.
5. Wait before repeating the request
Avoid repeatedly sending messages within a very short period.
6. Try the online system
You can also use the official SIM Information System as an alternative checking method.
7. Contact your operator
If you continue experiencing problems with SMS services, contact your mobile network’s official customer support.
What If the Result Shows More SIMs Than You Own?
This is one of the most important situations to understand.
Suppose you know you have three active SIMs, but your CNIC check indicates a higher registration count.
Do not immediately conclude that someone has committed fraud.
Instead, investigate systematically.
Check your history
Think about:
- Old SIM cards
- Lost SIMs
- Replaced SIMs
- Numbers you stopped using
- SIMs issued for temporary purposes
- Previous mobile networks
An old registration may explain part of the difference.
If the number still cannot be explained, contact the relevant operator.
What to Do About an Unknown SIM Registration
If you discover an unfamiliar SIM registration, follow an official resolution process.
Step 1: Identify the Network
Look at the network associated with the unexpected registration.
Step 2: Contact the Operator
Use the operator’s official customer service or visit an authorized service center.
Step 3: Explain the Situation
Tell the representative that the registration is associated with your CNIC but you do not recognize it.
Step 4: Complete Required Verification
The operator may require identity verification before taking action.
Step 5: Request the Appropriate Action
Depending on the circumstances, ask the operator about blocking, disowning, correcting, or investigating the registration.
Step 6: Keep the Complaint Reference
If the operator creates a complaint or service request, save its reference number.
Step 7: Escalate if Necessary
If the issue is not resolved through the operator, you can consider using PTA’s official complaint system.
PTA’s Complaint Management System allows consumers to register and track telecom complaints.
Do Not Post Your CNIC Online
If you discover an unexpected SIM registration, one of the worst responses is posting your CNIC publicly and asking strangers to investigate it.
Avoid sharing your:
- CNIC number
- CNIC photograph
- Fingerprint information
- OTP
- Mobile account password
- Banking information
- Personal address
on social media or unofficial websites.
PTA’s National Telecom CERT focuses on protecting telecom-sector security and the confidentiality of user data, making responsible handling of personal information particularly important.
Why Regular SIM Checks Are Useful
A SIM registered against your identity can be important because subscriber registration connects a mobile connection with an identity record.
Regular checks can help you notice changes that you do not recognize.
You might choose to check after:
- Losing your phone
- Losing a SIM
- Replacing a SIM
- Closing a mobile connection
- Changing networks
- Buying a new SIM
- Giving a CNIC copy to a business
- Suspecting suspicious telecom activity
PTA’s published guidance recommends periodically checking the SIMs issued in your name.
668 SMS Checklist
Before sending the message, use this quick checklist:
Your CNIC
- It belongs to you.
- It contains 13 digits.
- It is typed correctly.
- It has no dashes.
- It has no spaces.
SMS
- Open the normal Messages application.
- Create a new message.
- Enter the CNIC digits.
- Enter 668 as the recipient.
- Check the message once.
- Send it.
After the Reply
- Review the SIM count.
- Compare it with your known SIMs.
- Investigate unexpected registrations.
- Contact the relevant operator if necessary.
- Keep complaint/reference information.
Common Mistakes When Using 668
Mistake 1: Adding Dashes
Incorrect:
35202-1234567-1
Use the 13 digits without separators.
Mistake 2: Sending a Mobile Number Instead
668 is associated with checking SIM registrations against a CNIC. Do not confuse it with services designed for checking information about a specific mobile number.
Mistake 3: Using Someone Else’s CNIC
Do not use another person’s identity information without authorization.
The safest approach is to use official services for legitimate self-verification.
Mistake 4: Searching for a “668 App”
You do not need a random third-party application to send the SMS.
Use the normal SMS application already available on your phone.
Mistake 5: Trusting Unofficial Database Websites
Avoid websites that claim they can provide:
“Complete SIM owner details with name, CNIC and address.”
Such claims should be treated with caution.
The official SIM Information System is designed to provide controlled SIM registration information, not unrestricted access to private subscriber databases.
Is 668 the Same as 667?
No.
Both numbers are associated with different SIM-related functions.
| Code | General Purpose |
|---|---|
| 668 | Check SIM registrations associated with your CNIC |
| 667 | Used for certain SIM/MNP registration-related checks |
| 76367 | The official SIM Information System currently lists a service for checking the network of a number by sending N 03xx3456789 |
The current CNIC.SIMS.PK website specifically displays the 76367 network-check service and its applicable charge.
Therefore, do not randomly send commands to different shortcodes. Use the command intended for the service you actually need.
668 SMS Service and Privacy
Privacy is an important consideration whenever you use an identity-based telecom service.
Your CNIC is not simply an ordinary number. It is linked to your identity record.
For that reason:
Never share your CNIC unnecessarily
Only provide it to legitimate organizations when there is a valid reason.
Never share OTPs
An OTP received on your phone should not be forwarded to an unknown person.
Be careful with biometric verification
PTA’s National Telecom CERT publishes awareness material encouraging users to be careful when providing fingerprints for SIM-related processes.
Use authorized locations
For SIM ownership, replacement, biometric verification, or other account-level changes, use the operator’s official channels or authorized service locations.
What 668 Cannot Do
It is equally important to understand the limitations of the service.
The 668 method should not be considered a way to:
- Track a person’s live location.
- Find someone’s home address.
- Obtain private CNIC information.
- Reveal another person’s private SIM database.
- Track a mobile phone.
- Hack a SIM.
- Access WhatsApp accounts.
- Obtain banking credentials.
- Identify a person from a random phone number through unofficial means.
Its legitimate purpose is much narrower: checking SIM registration information associated with your own CNIC.
668 SMS vs Third-Party SIM Lookup Websites
If you search online for SIM information, you may encounter unofficial websites promising much more information than official services provide.
Consider the difference:
| Official 668 Method | Unofficial Lookup Website |
|---|---|
| Uses an established telecom service | May have unknown ownership |
| Designed for SIM registration checks | May make unsupported claims |
| Uses your CNIC for your own record | May ask for excessive personal data |
| No promise of private third-party records | May claim to reveal private data |
| Better choice for identity checks | Privacy and accuracy may be uncertain |
If a website asks you to upload your CNIC image merely to “check a SIM owner,” stop and consider whether the request is necessary.
What If You Need More Help?
If your 668 result creates a genuine telecom concern, the correct next step is generally not another random website.
Instead:
For a specific SIM registration
Contact the relevant mobile operator.
For an unresolved telecom complaint
Use the official PTA Complaint Management System.
PTA’s complaint documentation explains that users can sign in, submit complaints, and manage complaint information through its system.
For suspected cybercrime or identity misuse
Use the appropriate official law-enforcement reporting channel rather than posting your personal information publicly.
Frequently Asked Questions
How do I check SIMs on my CNIC through 668?
Open your SMS application, type your 13-digit CNIC without dashes or spaces, and send it to 668. The service can provide SIM registration information associated with your CNIC.
What number do I send my CNIC to?
The shortcode used for the SIM registration check is:
668
Should I include dashes in my CNIC?
No. For the standard SMS method, use the 13-digit CNIC digits without dashes.
Can I send someone else’s CNIC to 668?
You should use identity-based verification services for legitimate purposes involving your own information or with proper authorization. Do not use another person’s CNIC to obtain private information.
Does 668 show the names of SIM owners?
The 668 service should not be treated as a public database for obtaining another person’s private subscriber identity. Its purpose is to check SIM registrations associated with a CNIC.
Does 668 show someone’s address?
No. Do not expect the official SIM registration check to provide a person’s private residential address.
Can I check SIMs without internet?
Yes. The 668 method is SMS-based, so you do not need a web browser or mobile data connection to send the request.
What if my 668 SMS fails?
First check your CNIC digits, network signal, SMS balance, and recipient shortcode. You can also use the official online SIM Information System as an alternative.
What if I see an unfamiliar SIM?
Contact the relevant mobile operator and request verification or appropriate action. Keep any complaint/reference number. If the issue remains unresolved, PTA’s Complaint Management System can be used for telecom complaints.
How often should I check SIMs on my CNIC?
There is no need to check every day. A periodic review can be useful, especially after losing a SIM, replacing a number, changing networks, or noticing suspicious activity.
Is CNIC.SIMS.PK another way to check?
Yes. The official SIM Information System allows users to enter their CNIC online and view the SIM count by network.
Is 668 the same as a mobile number lookup?
No. A CNIC-based SIM registration check and a reverse mobile-number lookup are different things. Do not confuse a legitimate self-check with websites claiming to reveal private subscriber records.
Final Takeaway
The 668 SMS service is one of the simplest ways to check SIM registration information associated with your CNIC in Pakistan.
The process is straightforward:
Open Messages → Enter your 13-digit CNIC without dashes → Send to 668 → Review the response.
The main reason to use this service is not to find another person’s private information. It is to maintain awareness of the SIM registrations associated with your own identity.
If the result matches the SIMs you know about, you can keep the information for your records. If the result is higher than expected, investigate the discrepancy through the relevant mobile operator rather than relying on unofficial SIM databases.
For online verification, the official SIM Information System provides another route for checking SIM counts associated with a CNIC.
If you encounter an unresolved telecom problem, PTA’s official Complaint Management System provides a route for registering and tracking complaints.
Most importantly, protect your CNIC and biometric information. Never upload your identity documents to unknown websites promising “complete SIM owner details.”
Sims Owners Details is an independent informational website. It is not affiliated with PTA, NADRA, or any mobile network operator, and it does not operate or provide access to private SIM databases. Always verify important telecom information through official authorities and authorized operator channels.
Official Sources to Reference
- PTA / National Telecom CERT — SIM security and telecom awareness guidance.
- CNIC.SIMS.PK — Official SIM Information System.
- PTA Complaint Management System — Telecom complaint registration and tracking.
- NADRA — National identity and biometric-related information.
- Relevant Mobile Operator — SIM-specific verification, blocking, correction, and subscriber-account issues.