CloudFlare Zero Trust - DNS filtering

I have configured the DNS in our company’s router to point to those of Cloudflare. Now I need to block approximate 3000 domains. In Cloudflare Zero Trus >> Gateway >> Firewall Policies I have created the policy but I can’t find how I can block all the domains at once for example according to an uploaded .csv. I can enter all the domains manually but that is not feisable. Is there a way to bloc many domains according to an uploaded list.

Have you tried using “in list” operator? You should see your list once you choose “in list” operator.

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