What is a website that will give you, for free, a reverse cell phone directory?

We found a couple of "free" reverse cell phone directory websites: Spy Dialer and National Cellular Directory.

Spy Dialer allows you to listen to an out-going voice-mail of the cell phone number you are curious about. This is only helpful if the owner records their name in the message. A recording that includes an address is unlikely.

You'll have to create an account to use National Cellular Directory. Once you've signed in you can search their "Premium" directory free for 1 hour every day for the name and address of cell phone number owners.

You might be able to find out who the owner is of a cell phone number using Facebook. Type a phone number in the search box at the top of the screen and then press Enter. If the cell phone number has been linked to a Facebook profile, the name of the owner will appear as the top search result.

Of interest, U.S. Supreme Justices are trying to decide if police must obtain a warrant before searching someone's cell phone during an arrest. Learn more from the New York Times.