I've also blocked tens of thousands of ips from DO, and AWS on several web sites. Mostly for attempts at logging into wordpress admin accounts, some were spamm

I've also blocked tens of thousands of ips from DO, and AWS on several web sites. Mostly for attempts at logging into wordpress admin accounts, some were spammers I'm guessing were using vpns that sometimes go through them. Those and tens of thousands from brasil, and several other countries. There was a time when I looked at sending in reports - and a time when I asked someone in the wp plugin directory who had a detector-like plugin to have it spit out a chunk of fields that would be ready to fill in the amazon complaint form and to do a cidr lookup to port over to iptables.. but that never got made. This was all made worse when maxmind went registration needed and ruined the most effective security plugin for wordpress I'd been depending on for years. I've noticed an increase in the microsoft ips I'm blocking these days to. for now I don't mind doing an ip lookup when I can block 64,000 ips or more at a time I find it's a solid win.