I know my question is a newbie answer. I been looking at the websites, but I can't really get a good answer or at least an answer that I can understand. So lets say I type in 'nslookup www.mit.edu'. I get one non-authoritative answer. When I type in 'nslookup -type=nds mit.edu', I get a bunch of non-authoritative answer name servers (8). So what is going is nslookup is sending out a command to my local dns to get all the name servers (both non-authoritative and authoritative name servers)?

Can someone let me know I am on the right track.


You are getting a non-authoritative list of authoritative name servers. Basically, it's saying "I am not authoritative, but here's what I believe the list of authoritative name servers are".

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  • if I do a nslookup -type=NS somesite.com... The second part of the print out says: non-authoritative answer: somesite.com nameserver = ns1.1.com. The authoritative server is ns1.1.com? thanks in advanced – Peter Sun Sep 7 '14 at 13:05
  • @PeterSun The non authoritative answer is that the authoritative answer can be obtained from that nameserver. – David Schwartz Sep 8 '14 at 15:36

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