It's not a DNS issue since:
And pinging an IP from the modem gives a "timeout" error.
More probably they are blocking all the TCP connections, and WireGuard works over UPD (right?).
At the beginning of my tests I also tried to change the DNS, and then pinging directly a remote IP; the issue is not related to the domains resolution.
How can I use nmap to find something useful here?
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