Who called from 5022421201

This number called my cellphone this morning.  Since I didn't recognize the number, I didn't answer.  No message was left by the caller.

# called me today, 6/6/16, did not answer, did not leave message.

# called me today, 6/6/16. I answered, but silence at the other end.

called me, i didn't answer.  no vm left

Called today, left no msg.  I don't answer calls I don't recognize.  Assuming is a scam caller.