dig domain ns fails when local name servers misconfigured

[Tristan Goguen]

Hi all,

We have been using dig to retrieve a domain's name servers for years.  
Unfortunately, the dig syntax we normally use does not work when name  
servers are misconfigured. Currently, dig is returning an empty name  
server list for domain ilap.ca:


dig +short ilap.ca ns
 empty list 

For testing purposes, we removed the zone statement for the domain.

We would like to take some action when domain authority transfers take  
place. Can we configure dig to return the name server list based  
exclusively on a query to the root / TLD servers? Can local name  
servers be ignored?


Thank you for any advice.

Regards,
Tristan

-
Tristan Goguen
CEO, ILAP(r)

(416) 250-5600 x205   -   tgog...@ilap.com

Our mission is to provide the North American marketplace with advanced  
Internet solutions.


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Re: dig domain ns fails when local name servers misconfigured

[Karl Auer]

On Wed, 2010-09-29 at 19:51 -0400, Tristan Goguen wrote:
 We would like to take some action when domain authority transfers take  
 place. Can we configure dig to return the name server list based  
 exclusively on a query to the root / TLD servers? Can local name  
 servers be ignored?

   dig +trace ilap.ca ns | grep ^ilap\.ca\. | cut -f6

Might need something a bit more robust than that cut if you are working
with other domains.

Regards, K.

-- 
~~~
Karl Auer (ka...@biplane.com.au)   +61-2-64957160 (h)
http://www.biplane.com.au/kauer/   +61-428-957160 (mob)

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