Just of recent The Nigerian Communications Commission (NCC) just made it known too all that all network providers must link their customers phone number with their NIN in other to avoid been blocked.
Confirm Your Mobile Number(s) Registration Status To Avoid Being Blocked By NCC.
MTN – dial *789*1#
Airtel – dial *746#
9mobile – dial 746 or 200
Glo – text REG to 746 or 3456
How To link Your NIN With Your Phone
To link your NIN, simply dial *785# using the phone number you wish to link, enter your NIN and submit or;
Dial *785#Your NIN# from the phone number you wish to link. The number will be linked to your NIN automatically.
Visit https://mtnonline.com/nim/using your phone or computer.
Complete the NIN linking form by entering your name, phone number, NIN, and email address.
Submit the form as soon as you’re done.
Wait for feedback from the network.
To link your NIN to your Airtel phone number, follow the steps below:
Dial *121# on the Airtel line you wish to link.
Type 1 for “NIN Capture” and send.
Enter your 11-digit NIN and send.
Wait for the message confirming your submission. If you get an error, just wait for some time and try again.
Other networks (Glo and 9mobile)
For the other networks, you simply visit the nearest office of your service provider (Glo or 9mobile) to register/link your NIN.
Go with NIN and your SIM pack or call the customer care line of your service provider.
9mobile said it is making effort to develop a system that would make things simple for its customers. You can check your NIN status by dialing *346# from your 9mobile line.