> I strongly suspect that once you answer a few spam calls, or a few calls where they hang up immediately (this has to be some sort of probe)-- you end up with

> I strongly suspect that once you answer a few spam calls, or a few calls where they hang up immediately (this has to be some sort of probe)-- you end up with many more spam calls. I think it's more luck of the draw on which lists the phone# is. I have an old cell phone (had since ~2006) which gets no spam at all! I have a new cell phone number which is relentless, easy double digits spam per day every day. And I've never answered any call on that phone except from known family member numbers. The house landline gets maybe 1 per week or so. Probably less.