To generate UPC online you’ll need SIM card number and Mobile Number. Yopu can found SIM card number on the back of the sim card. If your sim card is nano or micro sim and you don’t have sim number on it then you can try any sim card info app from Play store.
Steps to generate Aircel UPC online:
Open this link Aircel UPC link. Enter your Aircel Mobile number and Sim number. It’ll show you UPC.