I’m just curious, what if I’d use my pi-hole to block all connections from/to China on my home network. I have a good bit of automation in place, but mostly western solutions, yet still I wouldn’t be surprised if they called China. Have any of you tried this kind of experiment? Is it even possible to block? What gone down?
Note that GeoIP is unreliable so you may accidentally block some IPs that aren’t Chinese. Even whois is not 100% reliable given how often IPv4 addresses are traded these days.
If some Chinese-made technology really phones home, it’s more likely that they’d communicate with a US-based server that would then communicate to servers in China behind-the-scenes.