User blog comment:BraveBrit1/Question/@comment-10502460-20180928031231

I was an admin on a wiki that dealt with a situation like this (mass spammer/vandal with dynamic IP or proxy making it difficult to keep blocked).

I still have a couple tools laying around that I got Fandom volunteer devs to make for me back then that I can ask the admins if we can use if it gets really bad. I won't mention the details here though.

If worst comes to worst, it is possible for our admins to issue a range IP ban that will ban the spammer's entire city.