Constant Wyze cam DNS requests

Approximately every 30 seconds the cam sends 4 DNS requests; 1 IPv4 & 1 IPv6 (even though there is no IPv6 service here) for and ditto for As long as the device is plugged in, even when technically turned off. At least one of these domains indicates to be in China. Please explain?

Clearly, even when in OFF mode, the cam must maintain some minimal internet connection (heartbeat). Otherwise there’d be no way to turn it back ON remotely. I can’t comment on the China aspect though.