In Apache, if you want to forward some requests matching a regex to another server, you can use the rule ProxyPassMatch.
Here is an example that is matching URL like:
- /list/any number/info
- /manage/any number
and redirect it to https://my-hidden-domain.com:26000
ProxyPassMatch ^/(admin/.*@.*|list/[0-9]*/info|manage/[0-9]*)$ https://my-hidden-domain.com:26000/$1
You can then define any rule you want with multiple rules matching different regex.