Thanks for checking guys. I checked RIR registration and they have those 2 IPs
registered in
Texas. I have read that ATT uses anycast for name resolution for
Uverse/DSL customers. I can only check from my account in Florida and
the DNS query responses so far resolve as if I were in the Central
United States because the recursive resolvers are registered in Texas, I
as far as I can tell.
I just need to know if these are the only DNS server IPs they hand out to their
Uverse/DSL customers.
Thanks,
Tim Haak
From: wbai...@satelliteintelligencegroup.com
To: j...@thejof.com; tim.h...@hotmail.com
Subject: Re: ATT Uverse/DSL Network Engineer DNS question
Date: Tue, 5 Feb 2013 21:15:46 +
CC: nanog@nanog.org
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 j...@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 thaiti...@hotmail.com wrote:
Hi,
Can a ATT 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