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| How to Check Numbers Linked to My NIN in 2025 (MTN, Airtel, Glo, 9mobile) |
With the Nigerian government’s continued enforcement of NIN-SIM linkage, many mobile users are asking,
“How can I check all the phone numbers linked to my NIN?”
Whether you registered your National Identification Number (NIN) multiple times or linked it to different SIM cards (MTN, Airtel, Glo, or 9mobile), it’s now possible to check which numbers are linked to your NIN and ensure they’re correct.
In this guide, you’ll learn:
- The USSD codes and online methods for checking linked numbers,
- Why it’s important to verify your NIN-SIM linkage,
- What to do if you find an unknown number linked to your NIN.
Let’s dive in.
Why Should You Check Numbers Linked to Your NIN?
According to the National Identity Management Commission (NIMC) and the Nigerian Communications Commission (NCC), all active phone numbers must be linked to the owner’s valid NIN.
Checking the list of linked numbers helps you:
Prevent identity theft
Remove unauthorized SIM cards
Ensure full compliance with NCC regulations
Avoid getting your SIM barred or blocked
How to Check Numbers Linked to Your NIN
1. Using USSD Code (for MTN Users Only)
As of 2025, MTN Nigeria allows you to check numbers linked to your NIN using this simple code:
Dial *996*#
Then follow these steps:
- Select option for "NIN status" or "View linked numbers"
- Enter your NIN (if requested)
- The system will display all MTN numbers currently linked to your NIN
Note: This only works for MTN SIMs. Glo, Airtel, and 9mobile are still working on releasing similar USSD functionality.
2. Via MTN Website or MyMTN App
If you're an MTN user:
- Go to: https://mtn.ng/nin
- Enter your phone number
- You may be asked to validate your NIN
- Linked numbers are then displayed
Or use the MyMTN App, log in, and go to NIN Services > Linked Numbers.
3. Call Customer Care for Airtel, Glo, 9mobile
If you use other networks, your best option is to call customer support:
- Airtel: 111 or 121
- Glo: 121 or 200
- 9mobile: 200
Request to verify which phone numbers are currently linked to your NIN. You may be asked to provide your full name, NIN, and date of birth for verification.
4 Visit NIMC-Approved NIN Enrollment Centres
You can also visit the nearest NIMC center or NIN registration agent (e.g., in banks or telecom service centers) with a valid ID card to request the full list of numbers tied to your NIN.
What If an Unknown Number Is Linked to My NIN?
If you discover a phone number you don't recognize, it could mean:
- Someone used your NIN without your consent
- You mistakenly linked the number during registration
- There’s a database error at the telco’s end
Here’s what you can do:
Step 1: Report to the network provider to delist the number
Step 2: File a formal complaint with NIMC or NCC
Step 3: Update your NIN at any authorized center and request to unlink unrecognized numbers
Pro Tip: Link Your NIN to All SIMs Properly
If you haven’t linked your NIN to your SIM cards yet, here are the codes:
| Network | NIN Linking Code |
|---|---|
| MTN | 996YourNIN# |
| Airtel | 1211# or 121YourNIN# |
| Glo | Send “UPDATENIN NIN FirstName LastName” to 109 |
| 9mobile | 2008# or via 9mobile website |
Targeted Long-Tail Keywords:
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- “How to unlink nin from phone number”
- “Code to check linked nin numbers”
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Keeping track of the numbers connected to your National Identification Number is more than just good practice — it’s now mandatory.
With identity fraud on the rise, regularly verifying and delinking unauthorized numbers helps protect your digital identity.
So whether you're using MTN, Airtel, Glo, or 9mobile, ensure your NIN is correctly linked, and check periodically to be sure no one else is riding on your identity.
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