Do you remember a time before Caller ID when you had to pick up the phone without knowing who was on the other end? While Caller ID now alerts you to the phone number (unless it is blocked or unpublished), it doesn’t always identify the name of the caller. Especially in the case of a business calling you, you may want to find out who owns the number before returning the call. Thanks to the Internet, there are simple ways to look up a company by its telephone number. Tips Warnings Writer Bio