Visit if you want to trace a prank call or unlisted number. A reverse cell phone look up can be conducted for a variety of reasons. These reaons include: * Stopping a prank caller * Research "missed calls" on your caller ID * Determine someone's exact location * See who owns an unlisted number * Research a "suspicious" number on someone's phone * Locate an old friend from high school or college * Research "missed calls" on your caller ID * or whatever other reason you might have Please note that you must keep within the confines of laws and regulations.