Same! I also got like 20 requests every second from a university IP. I tried a few things to make it error out, like returning 404, but no dice. In my case, it

Same! I also got like 20 requests every second from a university IP. I tried a few things to make it error out, like returning 404, but no dice. In my case, it was my own fault though, a page with a few lines of JS to periodically check for updates got into a crazy state (I never found out how) and they didn't notice because it was a remote desktop system where they left the page open. Went on for months but didn't impact my service (I just noticed it in access logs while looking for something else) so I left it and remembered again a few months later, then it was gone.