Not all files on the same subdomain are using Cloudflare CDN

I run a test using Webpagetest and it is showing that not all files on the same subdomain are using Cloudflare CDN. How can i fix this?

Perhaps you could change your firewall settings to allow incoming connections only from these IPs:

We first should evaluate, if you need to fix that, or if WebPageTest needs to fix that.

It would help a lot, if you would share the domain and the specific URLs, which you are testing. Then we can check the headers on them and see if everything is right.

If the headers are all correct, then very likely WebPageTest is having a little bug.

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