Founder of OpenStatus here:
We can't use Cloudflare because there's no way to execute in a specific region, if you know how to do it let me know
Found this to be the best resource:
https://community.cloudflare.com/t/how-to-force-region-in-cl...
Guess it's a bit more work than originally expected.
An alternative would be to use proxy ip's to hint regions, which would resolve to other locations. And then parse the Colo from the request.