How to fix NSLOOKUP *** UnKnown can't find : Non-existent domain?

Issue : " *** UnKnown can't find : Non-existent domain" on NSLOOKUP from Windows Server 2008 DNS server



The reason for this error is there is there is no any Reverse Lookup Zone configured on the server. Or the Reverse zone is crashed. To fix this issue you need to create or reconfigure the reverse lookup zone.

Here is the way to do it.
1. Open the DNS management console in the Server 2008
        Start > Administrative Tools > DNS

2. Go to the Reverse Zone Lookup folder icon, Right click on it and Select New Zone


3. New Zone Wizard will open up and click Next.

4. Select Primary Zone as the Zone Type and click Next.

5. Here you can select the Zone Replication Scope as you like. If you are not sure select    servers in the domain and click Next.

6. Select the address type based on your requirement (Here I use IPV4) and Next.

7. Type the first three octets of your network IPV4 address range like 192.168.1 and click Next.


8. Select Secure Update and click Next.

9. Click Finish and Restart the DNS Server service.

Now it will take some time based on the network utilization to learn the addresses and when it is finished your nslookup will work fine.

Note: If you are facing a "Default Server:  UnKnown" issue my below post will help you to sort that out.

http://www.randika.info/2013/01/how-to-fix-nslookup-default-server.html

12 comments:

  1. You still have to add a PTR record for each machines:

    1. Right click on the reverse zone created
    2. Add a PTR record
    3. State the IP address of the server, name, etc.
    4. Then add another PTR record for all other clients

    ReplyDelete
  2. You still have to add a PTR record for each machines:

    1. Right click on the reverse zone created
    2. Add a PTR record
    3. State the IP address of the server, name, etc.
    4. Then add another PTR record for all other clients

    ReplyDelete
    Replies
    1. but how can add PTR record for all other clients

      Delete
    2. Thanks! That did the trick

      Delete
  3. have struggled with server 2008 .but still server unknown

    ReplyDelete
  4. Reverse lookuo zine is working well and resolve all querries but still this error is coming...????? Need help can any one explain.....

    ReplyDelete
  5. Reverse lookuo zine is working well and resolve all querries but still this error is coming...????? Need help can any one explain.....

    ReplyDelete
    Replies
    1. Start troubleshooting:
      IPv6 check in Un-ticked or not, this might be cause of error If reverse lookup zone is configured properly.

      Delete
  6. To set up a domain name you have to discover a domain facilitating organization. There are a lot of facilitating organizations you can discover on the web and purchasing your own particular domain name is not extremely costly.Domain Whois

    ReplyDelete