What Blacklists are used by Cloudflare?

Please can someone point me at a list of the Backlists used by Cloudflare, if any?

I am assuming the StevenBlack blacklist is used, but I don’t know.

Also, how do I turn on/off particular blacklists?



Hi @charles8,

You can create rules in Cloudflare Gateway to block/allow different content categories. I believe they use a range of sources, but I’m not sure which specific providers they use to categorise sites.

Does anyone from Cloudflare know?


Ah, if you want a response from Cloudflare itself, I suggest you open a ticket:

To contact Cloudflare Customer Support, login & go to https://dash.cloudflare.com/?account=support and select get more help. If you receive an automatic response that does not help resolve your issue, reply and indicate that you still require assistance. And, please share your ticket number here so that we can track it.


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To answer your question about how categorization on Cloudflare Radar occurs, we use a combination of 3rd party threat feeds and Cloudflare’s own threat intelligence work.