For the past 2 years I have be bothered by these spoofed 848-240- exchanges. The majority of these calls originate from teterboro, or metucen. I answered 1 of these calls about 2 years ago. A young female tried to offer a free home security evaluation. I told her no thanks, and asked to be removed from the call list. It was a moot point, each month I get about 3 calls from teterboro. I just keep blocking their numbers.