Of course you can visit it for hours, because you are most likely one of very few people who are accessing the CloudFlare netrwork from that IP. If you were to

Of course you can visit it for hours, because you are most likely one of very few people who are accessing the CloudFlare netrwork from that IP. If you were to go through a public VPN, then the chance of captcha will also go up. The issue is that with higher traffic out of a single IP, there is a much higher likelihood of malicious activity. A blacklist would do nothing to solve this, since the fundamental problem is the way Tor and VPNs work, by aggregating traffic into exit nodes at specific IPs. Edit: And upon further thought, it most likely is a blacklist. A bunch of malicious requests go out from one IP, so that IP is blocked. Because it's an exit node, it also blocks a bunch of other legitimate people.