I always feel a need to state this to folks who are not aware of geolocation and ip addresses: Geolocation based on IP is very unreliable and should be used only for soft-analytics at best.

Example: It is not fit for security postures (in theory). One can dump all the CURRENT v4 routes being advertised out of China and block them via blackholes/firewalls/etc. However immediately after that a rogue operator could hijack a non-China affiliated prefix, use it for badness, and then release the hijacked prefix.

Most Geolocation services that are static (point in time) will not detect the above scenario. BGP-based monitoring services will, but that's a step up $$$ wise.