Re: how do I find out which nameserver returns a DNS query?

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Ken Price wrote:
DIG tells you which server returned the results. Look for the SERVER line, should be third from the bottom. If you want to query specific nameservers directly, use dig like this:

dig @ns1.myserver domainname.com
dig @ns2.myserver domainname.com

etc, etc.

-Ken



----- Message from Rudi@xxxxxxxxxxx ---------
    Date: Mon, 07 Jul 2008 17:25:58 +0200
    From: Rudi Ahlers <Rudi@xxxxxxxxxxx>
Reply-To: CentOS mailing list <centos@xxxxxxxxxx>
Subject: how do I find out which nameserver returns a DNS query?
      To: CentOS mailing list <centos@xxxxxxxxxx>


Hi all

If I do a "dig mydomain.co.za" from a Linux server, how do I know which
DNS nameserver returns the queries?

I seem to have a faulty DNS server, but can't see which one, so I want
to find out which nameserver (if there's 4 - ns1.myserver,
ns2.myserver, ns3.myserver & ns4.myserver) returns the queries?

--

Kind Regards
Rudi Ahlers
CEO, SoftDux



Hi Ken

I thought dig would return it, but it doesn't.

Look at this:


dig hfserver1.hostfactor.co.za

; <<>> DiG 9.3.3rc2 <<>> hfserver1.hostfactor.co.za
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17016
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;hfserver1.hostfactor.co.za.    IN      A

;; ANSWER SECTION:
hfserver1.hostfactor.co.za. 6000 IN     A       196.34.136.50

;; Query time: 287 msec
;; SERVER: 4.2.2.1#53(4.2.2.1)
;; WHEN: Mon Jul  7 17:36:45 2008
;; MSG SIZE  rcvd: 60



I know I can dig @server - but I want to know which is the active server that returns a result at the moment

--

Kind Regards
Rudi Ahlers
CEO, SoftDux

Web:   http://www.SoftDux.com
Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stuff

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