[ILUG] [OT] eircom and dns...

[Ewan McDonell]

On Wednesday 17 Apr 2002 8:12 am, Anders Holm wrote:

> Hey...
>
> Let's see here... Authorative DNS for doolin.com seems to be
> rackspace.com.. resolves nicely, yep... But:
>
> [anders at redhat anders]$ dig @auth01.ns.eircom.net doolin.com
>


You were querying the wrong name server.

auth01.ns.eircom.net is a nonrecursive server, and since it is not
authoritative for doolin.com in any case, it returned a perfectly
correct referral to the GTLD servers.

Eircom users get DNS resolution from ns1.tinet.ie and dns1.te.net.

Querying ns1.tinet.ie for doolin.com returns the following:

***********************************************************************
[ewan at aqua ewan]$ dig @ns1.tinet.ie doolin.com any

; <<>> DiG 9.1.3 <<>> @ns1.tinet.ie doolin.com any
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11546
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 2, ADDITIONAL: 4

;; QUESTION SECTION:
;doolin.com.                    IN      ANY

;; ANSWER SECTION:
doolin.com.             86382   IN      NS      NS.RACKSPACE.com.
doolin.com.             86382   IN      NS      NS2.RACKSPACE.com.
doolin.com.             14320   IN      A       64.49.223.49
doolin.com.             50476   IN      MX      40 owsla.ie.suberic.net.
doolin.com.             50476   IN      MX      10 doolin.com.

;; AUTHORITY SECTION:
doolin.com.             86382   IN      NS      NS.RACKSPACE.com.
doolin.com.             86382   IN      NS      NS2.RACKSPACE.com.

;; ADDITIONAL SECTION:
NS.RACKSPACE.com.       72927   IN      A       207.235.16.2
NS2.RACKSPACE.com.      72927   IN      A       207.71.44.121
owsla.ie.suberic.net.   105508  IN      A       62.17.162.83
doolin.com.             14320   IN      A       64.49.223.49

;; Query time: 95 msec
;; SERVER: 159.134.237.6#53(ns1.tinet.ie)
;; WHEN: Wed Apr 17 09:19:50 2002
;; MSG SIZE  rcvd: 233

*****************************************************************

A query issued to dns1.te.net results in the following:

*****************************************************************

[ewan at aqua ewan]$ dig @dns1.te.net doolin.com any

; <<>> DiG 9.1.3 <<>> @dns1.te.net doolin.com any
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3428
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 2, ADDITIONAL: 3

;; QUESTION SECTION:
;doolin.com.                    IN      ANY

;; ANSWER SECTION:
doolin.com.             6425    IN      NS      NS.RACKSPACE.com.
doolin.com.             6425    IN      NS      NS2.RACKSPACE.com.
doolin.com.             82046   IN      A       64.49.223.49
doolin.com.             86365   IN      MX      10 doolin.com.
doolin.com.             86365   IN      MX      40 owsla.ie.suberic.net.

;; AUTHORITY SECTION:
doolin.com.             6425    IN      NS      NS.RACKSPACE.com.
doolin.com.             6425    IN      NS      NS2.RACKSPACE.com.

;; ADDITIONAL SECTION:
NS.RACKSPACE.com.       18894   IN      A       207.235.16.2
NS2.RACKSPACE.com.      110493  IN      A       207.71.44.121
doolin.com.             82046   IN      A       64.49.223.49

;; Query time: 93 msec
;; SERVER: 159.134.248.17#53(dns1.te.net)
;; WHEN: Wed Apr 17 09:24:27 2002
;; MSG SIZE  rcvd: 217

********************************************************************

I don't see anything wrong with the data returned here, and nothing that 
would suggest that Eircom's DNS is borked... though just about everything
else to do with that company is.

Regards,

Ewan

--
Ewan McDonell
ewan at smairlines.com
Santa Monica Airlines, Inc.