How to Check Numbers Linked to My NIN: Step-by-Step Guide for 2025

How to Check Numbers Linked to My NIN: Step-by-Step Guide for 2025 

With the mandatory NIN-SIM linkage policy enforced by the Nigerian government through the National Identity Management Commission (NIMC) and the Nigerian Communications Commission (NCC), every phone number must be linked to a National Identification Number (NIN). But how do you know which numbers are linked to your NIN?

In this guide, you’ll learn how to check numbers linked to your NIN, why it's important, and what to do if you see unauthorized numbers linked to your identity.

Why Should You Check Numbers Linked to Your NIN?

Many Nigerians unknowingly have unauthorized SIM cards linked to their NIN due to:

• Mistakes by mobile agents
• Fraudulent registrations
• SIM swaps done by third parties

This can lead to:

• Identity theft
• Fraudulent activities in your name
• Disconnection of your genuine line

It’s important to regularly check and confirm the mobile numbers linked to your NIN.

How to Check Numbers Linked to Your NIN on MTN, Glo, Airtel, and 9mobile

Here are the steps per network to check the list of numbers linked to your NIN:

MTN

1. Dial *996#
2. Select option: “NIN Linked Numbers”
3. Enter your NIN if prompted
4. A list of all MTN numbers linked to your NIN will appear

You can also text “STATUS” to 996

Airtel

1. Dial *121#
2. Choose “NIN Capture” or “Manage NIN”
3. Follow the on-screen instructions
4. View numbers linked to your NIN

Alternatively, use the Airtel NIN portal:
👉 https://www.airtel.com.ng/nin

Glo

1. Dial *996# or visit https://www.gloworld.com/ng/nin
2. Input your details and your NIN
3. See the phone numbers registered under your NIN

9mobile

Currently, 9mobile doesn't offer USSD to check numbers linked to your NIN. Instead:

• Visit the nearest 9mobile Experience Centre
• Present a valid ID and your NIN
• Request for a full check and unlink unauthorized numbers

What To Do If You Find Unknown Numbers Linked to Your NIN

If any number listed is not yours, report immediately:

1. Visit the customer care center of the mobile provider
2. File a complaint for unauthorized NIN linkage
3. Present your NIN slip, valid ID, and any supporting evidence
4. Request for delisting or unlinking of the number

This is very important for your security, especially for students or anyone using their NIN for WAEC, NECO, JAMB, NYSC, or banking services.

Pro Tips for NIN-SIM Link Management

• Always register SIMs yourself or at verified outlets
• Don’t share your NIN publicly or on unsecured platforms
• Check regularly (every 3–6 months)
• Use official codes and verified portals only

FAQs About Checking NIN-Linked Numbers

Can I check how many SIM cards are linked to my NIN?

Yes — each network allows this through USSD codes or portals. Use *996# for MTN or contact your operator.

Is there a universal code for all networks?

As of now, each network has its own process. There's no single USSD code that works across all operators.

Can I unlink a number I don’t recognize?

Yes — visit the telecom provider and make a formal request with your NIN and ID.

How many SIM cards can be linked to my NIN?

There’s no limit currently, but only SIMs you authorized should be linked.

With rising cases of SIM fraud and digital identity misuse, checking the numbers linked to your NIN is not just smart — it's essential. Using simple USSD codes and official portals, you can take control of your digital identity and prevent issues with SIM cards, WAEC registration, JAMB profiles, or banking apps.

Take a few minutes today to verify your linked numbers. Your NIN is your identity — protect it.