Truecaller is the popular application to identify the unknown caller names & location. The algorithm of app fetch the name of callers from different contacts lists and shows the one which is used by most of its users.
But there are lots of funny identities available on truecaller that even can’t exist in the world. Most of them used for promotional or banking numbers. Here you go :
These are the results of people’s frustation towards promotional calls or people they don’t like.