I recently needed to run a reverse lookup on a couple of telephone numbers. This used to be very difficult in the old days (read this as before the Internet and even last year.) I researched online and tried a couple of sites. The best one I have found – and joined – is powered by SafeCaller.com. I signed up at http://www.okcaller.com.
About the only negative comment I can make about the website is that they don’t use https:// to transport the information.