Re: Paging ATT.com DNS master

[Jeremy Chadwick <nanog () jdc parodius com>]

David,

Issue appears specific to one of five of AT&T's nameservers;
in this case, ns3.attdns.com only.

Authoritative nameservers for att.com are:

;; QUESTION SECTION:
;att.com.                       IN      NS

;; ANSWER SECTION:
att.com.                172800  IN      NS      ns1.attdns.com.
att.com.                172800  IN      NS      ns2.attdns.com.
att.com.                172800  IN      NS      ns3.attdns.com.
att.com.                172800  IN      NS      ns4.attdns.com.
att.com.                172800  IN      NS      ns5.attdns.com.

;; ADDITIONAL SECTION:
ns1.attdns.com.         172800  IN      A       144.160.112.22
ns2.attdns.com.         172800  IN      A       144.160.128.140
ns3.attdns.com.         172800  IN      A       144.160.20.47
ns4.attdns.com.         172800  IN      A       192.128.167.75
ns5.attdns.com.         172800  IN      A       192.128.133.75

I only get back NXDOMAIN from ns3.attdns.com.  All the others work
as expected.

-- 
| Jeremy Chadwick                                 jdc at parodius.com |
| Parodius Networking                        http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, USA |
| Making life hard for others since 1977.               PGP: 4BD6C0CB |

On Thu, Feb 15, 2007 at 08:56:01AM -0800, David Ulevitch wrote:
> You broke the zone for ATT.com.
>
> That's probably not good.
>
> -david
>
>
> $ dig @ns3.attdns.com att.com
>
> ; <<>> DiG 9.2.2 <<>> @ns3.attdns.com att.com
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 940
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;att.com.                       IN      A
>
> ;; Query time: 75 msec
> ;; SERVER: 144.160.20.47#53(ns3.attdns.com)
> ;; WHEN: Thu Feb 15 08:54:58 2007
> ;; MSG SIZE  rcvd: 25