host header
If you're using Cloudflare's Load Balancer you can override the host header of a specfic per Origin in a Pool even without Enterprise: https://developers.cloudflare.com/load-balancing/additional-options/override-http-host-headers/
There's more restrictions on it though:
There's more restrictions on it though:
For security reasons, this header must meet one of the following criteria:
Is a subdomain of a zone associated with this account
Matches the origin address
Publicly resolves to the origin address
When your application needs specialized routing (CNAME setup or custom hosts like Heroku), you can customize the Host header used in health monitors …
