I kind of wonder why ISPs haven't already started offering value-add security services that have various levels of filtering to provide a cleaner-feed internet experience. From my limited research there seem to be a surprisingly large number of bad actors that own moderate swathes of ip address ranges and even Autonomous Systems (AS) that are known and can therefore be blocked. I use OPNSense, which seems to allow AS…
I don't know if it does anything for suspicious AS.