Quick update here: Vultr is still ignoring us, and Cloudflare said to one of my clients: "some IPv6 traffic from Vultr was being dropped by a DDoS mitigation system as we were receiving malicious traffic from Vultr. The issue has since been resolved, and updown should be reporting availability correctly now."
So this confirms what I suggested above, I suppose they choose not to respond with an HTML page here because it would generate too much traffic, and maybe it was a lower level TCP attack.
This also probably explains why Vultr doesn't want to answer me if they were "responsible" for the DDoS attack that got them blocked.
So this confirms what I suggested above, I suppose they choose not to respond with an HTML page here because it would generate too much traffic, and maybe it was a lower level TCP attack.
This also probably explains why Vultr doesn't want to answer me if they were "responsible" for the DDoS attack that got them blocked.