A reverse phone lookup identifies the individual or company responsible for a phone call you received.It is pretty common for the police to use this tactic for tracking someone's phone number. When you run a reverse lookup service, the data engine generates a confidential report that includes the owner's name, address background, age, potential family, phone type and carrier, the location associated with the number, and more, when applicable.It operates on both cellphones and landlines, even though the phone numbers aren't publicly available.