The Practical steps on How to Check the Phone Numbers Linked to Your NIN in Nigeria

Nigerians can now check the phone numbers linked to their National Identification Number (NIN) using the official NIN–SIM verification channels provided by the Nigerian Communications Commission (NCC) and mobile network operators.

The National Identification Number is connected to subscribers’ mobile phone registration records to establish identity and strengthen the security of telecommunications services. However, many Nigerians may not know how many SIM cards are associated with their NIN or whether another person has registered a phone number using their identity information.

Ejes Gist News reports that the NCC provides a universal USSD code, *996#, for checking NIN–SIM linkage status across Nigerian mobile networks. Subscribers can also contact their network providers or visit authorised service centres to resolve discrepancies involving their registered phone numbers.

Checking the numbers linked to your NIN is important because an unfamiliar SIM registration could indicate an identity or registration problem that requires investigation.

This guide explains how to check all phone numbers linked to your NIN, the USSD code to use, the procedures for MTN, Airtel, Glo and 9mobile subscribers, and what to do if you discover an unfamiliar number.

How to Check All Phone Numbers Linked to Your NIN

The NCC provides the *996# USSD service for NIN–SIM linkage management across Nigerian mobile networks.

To check your NIN–SIM linkage status, follow these steps:

  1. Open the dialler on your mobile phone.
  2. Dial *996#.
  3. Follow the instructions displayed on your screen.
  4. Select the relevant option for checking your NIN–SIM linkage status, where available.
  5. Follow the authentication instructions.
  6. Check the response or confirmation message from your network provider..

Practical Example on How to Check the Phone Numbers Linked to Your NIN. 

Dial *996#. Popup will display select option 4 View Nin Status click send , another instructions will appear select 2. view Numbers Linked to nin tap send and the numbers will appear.

The NCC identifies *996# as a universal code for NIN–SIM linkage services. It also confirms that subscribers can use the code to check whether their SIM cards have been successfully linked to their NIN.

Important: Checking the linkage status of the SIM you are using is not necessarily the same as obtaining a complete list of every phone number registered against your NIN across all networks. If you need a comprehensive list, contact the relevant network operators and request an account-level verification.

The NCC confirms that the *996# service is free.

How to Check Numbers Linked to Your NIN on MTN

MTN subscribers can use the network’s NIN Status Portal to check whether their phone numbers have been successfully linked to their NIN.

MTN provides an online platform that allows customers to check their NIN linkage status using their mobile phone numbers.

Steps to Check Your MTN NIN Status

  1. Visit the official MTN NIN Status Portal: https://nin.mtn.ng/nin/status.
  2. Enter your MTN phone number.
  3. Request an OTP.
  4. Enter the OTP sent to your phone.
  5. Follow the instructions to confirm your NIN linkage status.

The portal displays the status of the submitted MTN number and provides relevant instructions where further action is required.

MTN also allows customers to access the service through its corporate website, myMTN App and Zigi.

The company states that checking NIN linkage status through its portal is free.

How to Check Numbers Linked to Your NIN on Airtel

Airtel subscribers can use the NCC’s universal *996# service to check their NIN–SIM linkage status.

You can also contact Airtel customer care or visit an authorised Airtel service centre to request verification of the phone numbers registered under your identity.

NIN Validation Portal: How to Verify Your NIN Online, Access NIMC Services and Check Your Details

When visiting an Airtel office, provide your NIN and valid identification and explain that you want to check the SIM registrations associated with your identity.

Airtel can advise on the appropriate procedure for resolving unfamiliar or incorrectly registered numbers.

How to Check Numbers Linked to Your NIN on Glo

Globacom subscribers can also use *996# to access the universal NIN–SIM linkage service.

If you want to confirm whether your Glo number is properly associated with your NIN, dial the code and follow the instructions.

You can also visit a Glo customer service centre and request assistance with checking the SIM registration information associated with your identity.

Where you discover a discrepancy, ask the network provider to investigate the registration record and explain the procedure for correcting it.

How to Check Numbers Linked to Your NIN on 9mobile

9mobile subscribers can use the NCC’s *996# USSD service to check NIN–SIM linkage status.

Subscribers who experience difficulties can contact their network provider through its official customer service channels or visit an authorised service centre.

Take your NIN and valid identification when requesting assistance with SIM registration records.

Can You Check All Numbers Linked to Your NIN Online?

The availability of online NIN–SIM verification depends on the services provided by individual network operators.

For example, MTN operates an online NIN Status Portal that allows customers to check the linkage status of a submitted phone number.

However, checking one number through a network portal does not automatically establish that you have obtained a complete list of every SIM registered against your NIN across MTN, Airtel, Glo and 9mobile.

If you want to establish whether unfamiliar numbers are associated with your identity, contact the relevant operators and request a more comprehensive verification.

Do not enter your NIN or other sensitive identity information on unofficial websites advertising access to the National Identity Database.

What to Do If You Find an Unknown Phone Number Linked to Your NIN

Discovering a phone number you do not recognise during a NIN–SIM verification exercise requires attention.

An unfamiliar number does not automatically prove identity theft. It could result from an administrative error, an unresolved SIM registration record or another registration issue.

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However, you should not ignore it.

Take the following steps:

  1. Contact your network provider: Visit the customer service centre of the operator associated with the unfamiliar number.
  2. Request an investigation: Explain that the number appears to be associated with your NIN without your knowledge.
  3. Provide identification: Present your NIN and valid identification to establish ownership of your identity record.
  4. Request correction: Ask the operator to investigate and explain the official procedure for removing or correcting an unauthorised association.
  5. Obtain confirmation: Request evidence that the complaint has been received and keep any reference number issued.
  6. Check again: Reconfirm your NIN–SIM linkage status after the operator completes its investigation.

If the operator fails to resolve the complaint, you can escalate it through the NCC’s consumer complaint channels.

NCC consumer information: https://consumer.ncc.gov.ng/

How to Remove an Unfamiliar Number Linked to Your NIN

If a phone number you do not own appears to be associated with your NIN, contact the network operator responsible for that SIM registration.

The operator must establish the circumstances surrounding the registration before processing the appropriate correction.

You should request an investigation rather than attempting to access, control or deactivate another person’s phone number yourself.

Where the problem involves suspected identity fraud, explain this clearly to the network provider and request that the complaint be escalated.

Keep copies of all relevant correspondence and complaint reference numbers.

What Happens If Your NIN Is Not Properly Linked to Your SIM?

The NCC explains that a phone number may fail NIN–SIM verification when the Know Your Customer (KYC) information in the SIM registration does not match the information associated with the NIN.

This means that submitting a NIN does not automatically guarantee successful linkage.

Where verification fails, the network operator should notify the subscriber.

The NCC advises affected subscribers to visit their network provider’s outlet to correct the discrepancy.

Subscribers should ensure that their registered names and other identity information are consistent with their NIMC records. <Cite refs={[“turn191197search1”]}/>

How to Confirm Your NIN Before Checking Linked Phone Numbers

If you have forgotten your NIN, you can retrieve it through NIMC’s recognised retrieval service.

The NCC confirms that subscribers can dial *346# using the phone number provided during their NIN registration.

Follow these steps:

  1. Dial *346# on your phone.
  2. Select the NIN retrieval option.
  3. Follow the instructions displayed.
  4. Complete the process to retrieve your NIN.

The retrieval service requires the phone number used during your NIN enrolment. A service charge may apply, so check the amount displayed before confirming.

Note that *346# retrieves your NIN, while *996# is used for NIN–SIM linkage services. They perform different functions.

Why You Should Regularly Check the Numbers Linked to Your NIN

Your NIN is an important identity reference, and its association with SIM registration records makes it necessary to protect your personal information.

Checking your NIN–SIM linkage can help you:

  • Identify unfamiliar SIM registration records.
  • Confirm that your personal phone numbers have been properly linked.
  • Detect possible discrepancies in your identity information.
  • Identify registration problems that could affect your mobile services.
  • Take appropriate action when an unauthorised association is discovered.
  • Reduce the risk of identity misuse involving your personal information.

The NCC introduced NIN–SIM linkage as part of efforts to strengthen subscriber identification, improve the integrity of SIM registration records and address security concerns involving telecommunications services.

Frequently Asked Questions About Phone Numbers Linked to NIN

1. What is the code to check numbers linked to my NIN?

Dial *996# and follow the instructions for NIN–SIM linkage services. The NCC identifies this as the universal code for NIN–SIM linkage across Nigerian networks.

2. Can I check all numbers linked to my NIN?

You can use the NCC’s *996# service to check NIN–SIM linkage status. For a comprehensive list of all numbers associated with your identity across different networks, contact the relevant operators and request verification.

3. Is checking numbers linked to NIN free?

The NCC states that using *996# for NIN–SIM linkage services is free. Other services offered by individual network operators may have separate terms.

4. How do I check numbers linked to my NIN on MTN?

You can visit https://nin.mtn.ng/nin/status, enter your MTN phone number, request an OTP and follow the instructions to confirm the linkage status.

5. How do I check numbers linked to my NIN on Airtel?

Dial *996# and follow the instructions. You can also contact Airtel customer care or visit an authorised service centre for assistance.

6. How do I check numbers linked to my NIN on Glo?

Use *996# to check NIN–SIM linkage status. For further verification, contact Globacom through its official customer service channels.

7. How do I check numbers linked to my NIN on 9mobile?

Dial *996# and follow the instructions. You can also visit an authorised 9mobile service centre.

8. What should I do if I find a strange number linked to my NIN?

Contact the relevant network provider immediately, request an investigation and follow its official procedure for correcting unauthorised or incorrect SIM registration records.

9. Can someone register a SIM with my NIN without my knowledge?

Unauthorised use of another person’s identity information is a serious matter. If you suspect that someone has used your NIN without permission, contact the network operator and request an investigation.

10. What is the difference between *346# and *996#?

The *346# code is used to retrieve your NIN, while *996# provides access to NIN–SIM linkage services, including checking linkage status.

11. Does one NIN work for multiple phone numbers?

Yes. An individual has one unique NIN and can associate it with multiple phone numbers, subject to applicable SIM registration requirements.

12. What happens if my SIM registration details do not match my NIN?

The network provider may reject the linkage and notify you. The NCC advises subscribers to visit their network provider’s outlet to resolve the mismatch.

Official Sources for Checking NIN-Linked Phone Numbers

For accurate information and assistance, use the following official resources:

The NCC’s SIM–NIN linkage guidance provides the official procedures for checking linkage status and resolving verification problems.