Comment by jeroenhd

I've had that experience in a developed country too, but every time it happened it was because of CGNAT without IPv6 (or some similar setup causing millions of requests to come from a single IP).

But on the other hand, almost all of the requests from less developed countries in my logs seem to be malicious. I've blocked entire countries at times (through iptables, arguably better for privacy but worse for blocked people) when a dumb bot wave made it through the internet. I get why Cloudflare is so eager to ban some ISPs, those ISPs seem to be doing a terrible job protecting the rest of the internet from their hacked or abusive customers.