alt Hacker News> bunch of organisations that just probe the entire IPv4 range on a regular basis
Yep, #1 source of junk traffic, in my experience. I set those prefixes go right into nullroute on every server I set up:
https://raw.githubusercontent.com/UninvitedActivity/Uninvite...
#2 are IP ranges of Azure, DO, OVH, vultr, etc... A bit harder to block those outright.
In my servers I dont have IPv4 at all, just IPv6 only.
On the plus side, it does not waste CPU cycles used to block unwanted IPv4 traffic.