Yea but I don't want to have to pay for the information........
You can find out without paying. Just type in Area Code-—in your search box. I always find one that says “Did you receive a phone call from -—?” There is a place to put the number - you don’t always find what it is, but there is usually some discussion, other people who’ve received th same call, and you’ll almost always get your answer.
By the way, hanging up does no good. Most marketing software gives the caller three choices - Continue, Schedule callback, or Refused. Hanging up is not viewed as refused - until you say the word no to them, they will continue to call.