Reverse Phone Lookup: Find out the owner of any cell phone or unlisted number. This is a very helpful resource. We all get those calls, whether it is from an unknown toll free number, a number out of New York (and we may not know anyone in New York)… and they do not leave a message. Before calling them back, use Reverse Phone Lookup and see who they are. Found an odd number on your child’s cell phone… look it up! There are so many reasons why this is a great service.