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Case Study – Nslookup can't find server name for address x.x.x.x and Non-existent domain

Situation: When the workstation can’t join the domain, we use nslookup to find the status of the DNS. The nslookup displays this message: “DNS request timed out. Timeout was 2 seconds.

The nslookup displays this message: “DNS request timed out. Timeout was 2 seconds.

*** Can't find server name for address 192.168.10.1: Non-existent domain

*** Default servers are not available

Default Server:  chicagotech.net

Address:  192.168.10.1

Troubleshooting: You can ping the server by IP or FQDN, but you ping –a witch doesn’t display the server’s FQDN.

Resolution: The "nonexistent domain" message means nslookup can't map 192.168.10.1, the IP address of its name server, to a domain name. Adding the PTR records for the server fixes the issue.

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Nslookup can't find server name for address x.x.x.x and Default Server:  UnKnown

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