One call so far. I don’t answer unknown numbers; they did not leave a message. Thanks to those adding info here! My Panasonic seldom shows a name unless it's in my contacts. Almost all others are 'out of area' or 'toll free caller'.
I got a call from this number and it went to the answering machine. As soon as the answering machine started someone on their end picked up and a male voice said my name and waited then hung up. They didn't identify themselves he just said my first name. They are clearly getting some information from somewhere about the numbers they call. I blocked because I know I don't owe anyone anything and the people I do know would never call and just say my name and nothing else.