To see a description what the service is one has to run
curl -I https://runson.cloud/
"x-about: This site provides a query interface over the
public IP address range manifests published by a number
of the large cloud providers and CDNs. The /search path
provides a simple boolean lookup (with region if possible)
to determine if the passed IP (or the IPs a domain name
resolves to) is present in a given provider's ranges,
across all manifests. All other paths return the most
specific logical blocks of the given provider's manifest
that contain the IPs passed or resolved. It is run by
github.com/sampointer <sam@outsidethe.net>"
