In our society today, it is important, both in business and in person, to know who might be calling you. Sometimes, though, the caller doesn't leave a message, and all you have is a phone number. Luckily, a phone number is all you need to identify someone.
Type the phone number into Google and search for it on the Internet. If a business or other public body is contacting you, a search will bring them up. It will also reveal whether the number that dialed you was a "robo-caller." Many of the numbers these computers use will be posted online to put minds at ease.
Enter the number into a reverse look up directory. The search will not come up with a name for private lines. Check the telephone book online. If you have been contacted by a listed land line, it will yield the name and address of your caller.
Enter the number into a cell phone reverse look up website. Looking up a cell phone number is not free since these numbers are protected from the public by the cell phone providers.