country-blocking | dns>geo-ip>blocked?>true/false

yes, country-blocking works via ip, but shouldn't it be possible via dns for web-surfing purposes too? for examble when nextdns resolves a hostname and the answer is an ip-adress in a blocked country, the answer 0.0.0.0 is sent to the client? it is not the same as blocking the ip (incoming) in your firewall, but the websites in these countris won't load.