[pspzockerscene]

* by the way even if you never see it, you can also tell that a website is using Cloudflare by looking into your cookies and searching for "cf" cookies.
For spankbang.com, this looks like this:
Screenshot:

Spoiler:

EDIT

For better context:
The browser addon used to view the cookies is called "EditThisCookie" though you can also view set cookies in your browsers' settings but it takes more time to reach them this way.