Reverse Number Lookup Phone

Ok I am freaked out….. How do you do a Reverse Phone Number Lookup?

OK I play on xbox live and just last night I get a prank call which my caller ID said was “private” then today I get a text messege from somebody asking “Is this the famous (my xbox live ID)” I have the Phone Number now, is there a way to find out who it belongs to.

I have no clue, but DUDE that’s creepy!