The most annoying thing next to Briney Spears is not knowing who called you. Have you ever gotten a call that you did not know the number. Doing a Google search brought up this site which reverse look-up a phone number, plus they can tell you who called. In my case I just wanted some basic information before I called the number back, but if you are looking at numbers on for example your wife or husbands cell phone this could be a little more detailed. These services have a great function, but you also need to be careful how you use them. If you have bill collectors calling, then for sure use this service. Any tool against collection agencies is a plus in my book. If you want to look up your own phone number Click Here!