I know this is old but I hope this helps someone else down the road. In working with Wyze I got this answer.
this is an IoT heartbeat server
not wyze-owned, it’s a part of a network that our tech partner uses to check if your devices are online
it serves no other function but blocking it could cause your device to think that the v3 is offline when you can view video and record events
(assuming it encounters cases where it can’t find another server before timeout)