[CentOS] how do I find out which nameserver returns a DNS query?
Rudi Ahlers
Rudi at SoftDux.com
Mon Jul 7 15:38:22 UTC 2008
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 at SoftDux.com ---------
> Date: Mon, 07 Jul 2008 17:25:58 +0200
> From: Rudi Ahlers <Rudi at SoftDux.com>
> Reply-To: CentOS mailing list <centos at centos.org>
> Subject: [CentOS] how do I find out which nameserver returns a DNS
> query?
> To: CentOS mailing list <centos at centos.org>
>
>
>> 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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