DNS Default Server : unknown

DNS Default Server: Unknown , this is the most common message Users see when they enter nslookup. This message means the DNS server which is configured on the client is not able to resolve itself / there is no pointer record configured for the DNS server.

DNS Server Unknown

To resolve the error, DNS administrator should ensure, there is an associated PTR record registered in the zone’s reverse lookup zone and test the nslookup command which should populate the DNS server name


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