dig +trace to find all the forwarders?

[Warren Kumari]

On Apr 27, 2010, at 12:50 AM, Barry Margolin wrote:

> In article <mailman.1278.1272292131.21153.bind-users at lists.isc.org>,
> Warren Kumari <warren at kumari.net> wrote:
>
>> On Apr 26, 2010, at 3:10 AM, Josh Kuo wrote:
>>
>>> What is happening is I suspect the DNS resolved IP given by my ISP  
>>> is
>>> actually forwarding recursive queries to yet-another-server(s),  
>>> and is
>>> introducing slow name resolution and timeouts.
>>
>> Well, if you are just trying to figure out if the nameserver you are
>> asking is the one doing the resolution, this *might* help you out:
>>
>> http://www.damia.com/whatismydns/
>>
>
> Another way to do this is to look up the names whoami.ultradns.net or
> whoami.akamai.net.  The nameservers for these names return the
> resolver's IP as the IP of the hostname.

Oh, hey, yeah, that's even better -- feel stupid for not suggesting  
that originally....

W

>
> -- 
> Barry Margolin, barmar at alum.mit.edu
> Arlington, MA
> *** PLEASE don't copy me on replies, I'll read them in the group ***
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