How to connect my NIN to my Airtel Sim

Dial *121# on the Airtel line you wish to link .. Enter your 11-digit NIN and send. ... Airtel Subscribers can also link online by visiting https://www. airtel .com.ng/ nin , Enter Mobile Number and click SEND OTP. Type the OTP in the space below to confirm your number. Thereafter enter your 11 Digit NIN and submit.