How do I configure the CDN?

Super Cache is an option for the CDN. I have Cloudflare.

1. I migrated 6 months ago to another hosting.
2. Unfortunately the register remained the same and requires the IP. Yes, I need the IP for Cloudflare.
3. On Super cache and the CDN setting I notice an entry: nameservers.
4. And if you put the ip and the nameserver of the hosting in the register and the Cloudflare nameservers in the Super Cache, could it be a good idea?

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