Who called from 2015471002

OK obviously something i going on with this number, Same here rang once and hang  up

Getting unwanted calls from this number

Unwanted call, rang once, hung up.

Called in A.M early!!!!! No message.. damn them!!!

Ditto to the rest; rang once, then hung up.  I wonder if they are trying to hit some call quota, but don't actually want to speak to the person they called.