DNS look up against a specific DNS provider

[irongeek at irongeek.com (Adrian Crenshaw)]

I've gave those a shot without luck. Here are the results I got(I change my
IP to ip-obmitted  for this output):



C:\Users\adrian>nslookup -norecurse ip-obmitted ns1.dyndns.org
(root)  nameserver = H.ROOT-SERVERS.NET
(root)  nameserver = K.ROOT-SERVERS.NET
(root)  nameserver = M.ROOT-SERVERS.NET
(root)  nameserver = A.ROOT-SERVERS.NET
(root)  nameserver = D.ROOT-SERVERS.NET
(root)  nameserver = C.ROOT-SERVERS.NET
(root)  nameserver = E.ROOT-SERVERS.NET
(root)  nameserver = I.ROOT-SERVERS.NET
(root)  nameserver = J.ROOT-SERVERS.NET
(root)  nameserver = G.ROOT-SERVERS.NET
(root)  nameserver = F.ROOT-SERVERS.NET
(root)  nameserver = L.ROOT-SERVERS.NET
(root)  nameserver = B.ROOT-SERVERS.NET
Server:  UnKnown
Address:  204.13.248.75

(root)  nameserver = B.ROOT-SERVERS.NET
(root)  nameserver = C.ROOT-SERVERS.NET
(root)  nameserver = I.ROOT-SERVERS.NET
(root)  nameserver = J.ROOT-SERVERS.NET
(root)  nameserver = K.ROOT-SERVERS.NET
(root)  nameserver = G.ROOT-SERVERS.NET
(root)  nameserver = M.ROOT-SERVERS.NET
(root)  nameserver = F.ROOT-SERVERS.NET
(root)  nameserver = A.ROOT-SERVERS.NET
(root)  nameserver = E.ROOT-SERVERS.NET
(root)  nameserver = L.ROOT-SERVERS.NET
(root)  nameserver = H.ROOT-SERVERS.NET
(root)  nameserver = D.ROOT-SERVERS.NET
*** No internal type for both IPv4 and IPv6 Addresses (A+AAAA) records
available
 for ip-obmitted





dig @ns1.dyndns.org ip-obmitted

; <<>> DiG 9.2.4 <<>> @ns1.dyndns.org ip-obmitted
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15548
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 0

;; QUESTION SECTION:
;ip-obmitted.                 IN      A

;; AUTHORITY SECTION:
.                       518400  IN      NS      H.ROOT-SERVERS.NET.
.                       518400  IN      NS      M.ROOT-SERVERS.NET.
.                       518400  IN      NS      K.ROOT-SERVERS.NET.
.                       518400  IN      NS      E.ROOT-SERVERS.NET.
.                       518400  IN      NS      I.ROOT-SERVERS.NET.
.                       518400  IN      NS      G.ROOT-SERVERS.NET.
.                       518400  IN      NS      F.ROOT-SERVERS.NET.
.                       518400  IN      NS      A.ROOT-SERVERS.NET.
.                       518400  IN      NS      L.ROOT-SERVERS.NET.
.                       518400  IN      NS      B.ROOT-SERVERS.NET.
.                       518400  IN      NS      J.ROOT-SERVERS.NET.
.                       518400  IN      NS      C.ROOT-SERVERS.NET.
.                       518400  IN      NS      D.ROOT-SERVERS.NET.

;; Query time: 93 msec
;; SERVER: 204.13.248.75#53(ns1.dyndns.org)
;; WHEN: Thu Jun 25 12:35:53 2009
;; MSG SIZE  rcvd: 242



On Thu, Jun 25, 2009 at 2:05 PM, Jonathan Moore <supermegatron at gmail.com>wrote:

> On Thu, Jun 25, 2009 at 12:32 PM, Adrian Crenshaw<irongeek at irongeek.com>
> wrote:
> > Does anyone know a way to specify a reverse DNS look up against a
> specific
> > DNS provider? I don't want to use the DNS that is authoritive for  the
> given
> > IP range. For example, look up all of the IPs at my org to see if any are
> > mapped to some host name at DYNDNS? Some bot nets use these services for
> > naming, so I thought this might be useful.
>
> I may be misunderstanding, but both nslookup and dig let you specify
> the server to query.  Using dig, adding @server.example.org to the
> command tells dig to query only that server (IIRC).
>
>  dig @ns1.everydns.net yahoo.com
>
> HTH
>
> -jonathan
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