From yesterday i have realized the wifi calling doesn't work anymore.
I have delete all the lists and still doesn't work.
With the DNS from Google i have no problem.
Hmm, do you have dns rebinding enabled?
Greg Burns now i check both routers.I have main router who create the connection to internet because is via cable and second wifi6 router from Xiaomi.
on Xiaomi i don't have any option for rebind but i found on Fritzbox.I will do a test and i hope will work.
If will work i will write a short tutorial for customers who use Fritzbox also i found a solution for DynDns to connect to nextdns to report the dynamic ip.
I found the problem.Was the Fritzbox DNS rebind protection.I have add the dns servers to the list and it's seems now everything is working fine.