AT&T Uverse/DSL Network Engineer DNS question

Tue Feb 5 21:15:46 UTC 2013

Here in Orange County, CA I've got a /28 with Uverse Residential with the
same DNS servers as mentioned below.

FYI 

On 2/5/13 1:10 PM, "Jonathan Lassoff" <jof at thejof.com> wrote:

>These appear to be an anycasted service, as I reach different destinations
>based on my source address.
>
>Hopefully each deployment has unique origin IPs for their recursive
>queries.
>
>I would recommend against looking at RIR registration data to determine IP
>location. There's often little to no correlation, there.
>
>--j
>
>On Tue, Feb 5, 2013 at 1:01 PM, Tim Haak <thaitim43 at hotmail.com> wrote:
>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Hi,
>>
>>
>>
>>
>> Can a AT&T Uverse/DSL Network Engineer answer a question about the DNS
>> server IPs that are handed out to customers please? I am currently
>>testing
>> from
>> a Florida IP. Can you please let me know if all Uverse and DSL customers
>> across the United States only use these 2 IPs as their primary and
>> secondary
>> DNS servers?
>>
>>
>>
>> 68.94.156.1
>>
>> 68.94.157.1
>>
>>
>>
>> We
>> provide services based on IP GEO-location. Since the 2 recursive
>>resolvers
>> below are registered in Texas every DNS query for any of our records
>>return
>> results that are intended for IPs in that region. In other words, users
>>on
>> the
>> east coast would actually resolve to a central part of the US or west
>> coast IP.
>>
>>
>>
>> Thanks
>> in advance,Tim
>>
>>
>>
>>
>