I receive several free electrical engineering magazines, so I think this number is associated with updating information for those subscriptions. Still annoying though.
I get this same types of calls from South Carolina, Delaware, Oregon. I have set the phone number to permanently DIVERT to voice mail. My phone doesn't ring and since they never leave one - problem solved.
This number was from a company saying they rep for another company I obtain a free subscription from. Must be an automated number as i did not receive a message. I called and left a v/m with name and number to have removed. We'll see