How to identify Cloudflare Traffic

What is the name of the domain?

example.com

What is the issue you’re encountering

How to identify Cloudflare Traffic for my API requests?

What are the steps to reproduce the issue?

I’m using an Azure API Management Instanz with Custom Domain, the Custom Domian is proxied via Cloudflare. Per Default, the APIM Instanz is using a own Default Domain, my goal is to block traffic not coming from Cloudflare via my Custom Domain, so I wonder how I can identify Cloudflare traffic?

The Cloudflare proxy requests will come from IP addresses in the ranges listed here:

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