Same here. Repeat calls all day. Caller unknown and will not leave a message on answer machine. When answered, no one at the other end which implies automatic dialing.
Received two calls from this number. Used to live in 919 area code so I almost answered. Doesn't leave message. Thanks for having this site. It put me at ease.
The John Edwards for President Campaign is using this number to fundraise. If you pick up and talk with them, they are polite and will not call you again if you request it.