I've opened an abuse ticket. Their forums are filled with folks facing the same issue. Cloudflare customer support only starts caring when your company is spending over $10K USD per month with them (speaking from experience, I got the VIP treatment while working at "too big to fail inc", but also had to deal with them on a $20/month plan. I’ve already shared a few horror stories with you, like the time they just decided to block all videos on my Mastodom server).
In short, they’re aware of it:
- https://community.cloudflare.com/t/how-can-i-block-2a063600-103-at-waf-level/651073/40 (2024)
- https://community.cloudflare.com/t/is-it-safe-to-block-2a063600-103/321899 (2021)
I don’t like blocking useful services like this, as folks on Nostr might be building legitimate stuff using Cloudflare Workers. But at this point, it’s really the lesser of two evils. Even though my firewall detected the abuse and was returning 429s to all requests, the sheer volume of requests was still enough to take everything down.