It's possible that some sleazy telemaggoter using caller ID spoofing in order to display a number that belongs to an innocent party. In the past these operations displayed out of service numbers, but the practice of displaying any number is on the rise.
Caller ID shows 'Mark Groll', in Cincinnati, Ohio. Have no idea who or what that might be, but calls kept coming in fast succession, like a lot of robocalls I get. No message, hang up.
It's possible that some sleazy telemaggoter using caller ID spoofing in order to display a number that belongs to an innocent party. In the past these operations displayed out of service numbers, but the practice of displaying any number is on the rise.