414 is Milwaukee, WI or that general area. I live in Madison, my Mom lives here too on the other side of town, we both get calls from this number. They never leave a message, if I answer, the caller hangs up. If I try calling back, its a busy signal or it just rings forever.
This might be some sort of tracking service, trying to determine if people are home? If you answer, you're there and they know to start recording your devices.
I was on another call but noticed a call come in a moment ago with ID 414-375-0209. Sorry no details other than this but thought I'd log this since there were others who received this call within the last 3 hours. phone company will do nothing about these type of calls when I asked, other than to offer a $6/mo service of blocking ph#'s. This was AT&T. I was hoping for a more regulatory policing on their part but they are throwing their hands up.