Authoritative DNS server for 12.54.94.0/23 PTR

Wed Sep 28 06:35:34 UTC 2011

Looks like I typo'd the third octet.

2011/9/27 Keegan Holley <keegan.holley at sungard.com>

> it looks like ATT still answers the queries.  I'd assume that any changes
> would have to be authorized by the customer though.  Why not just call
> Siemens Medical?
>
> ; <<>> DiG 9.6.0-APPLE-P2 <<>> -x 12.54.91.1
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 21619
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;1.91.54.12.in-addr.arpa.    IN    PTR
>
> ;; AUTHORITY SECTION:
> 54.12.in-addr.arpa.    900    IN    SOA    xbru.br.ns.els-gms.att.net.
> rm-hostmaster.ems.att.com. 1179 86400 10000 600000 172800
>
>
>
>
> 2011/9/27 Mike Gatti <ekim.ittag at gmail.com>
>
>> Hello Nanog Members,
>>
>> We have been having some issue doing reverse lookups for ip's in the
>> 12.54.94.0/23 prefix. We know that this block is assigned to AT&T and
>> AT&T has assigned that block to Siemens Medical (based on whois queries). We
>> are now trying to find out who would be the authoritative DNS server that
>> would resolve PTR queries for these IP addresses. Would someone from AT&T
>> (or Siemens) or someone that has that info please contact me offline to
>> discuss?
>>
>> Thanks Everyone,
>> --
>> Michael Gatti
>> cell.949.735.5612
>> ekim.ittag at gmail.com
>> (UTC-8)
>>
>>
>>
>>
>>
>>
>