AT&T Uverse/DSL Network Engineer DNS question

Tue Feb 5 21:10:33 UTC 2013

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:

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> Hi,
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> 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?
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> 68.94.156.1
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> 68.94.157.1
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> 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
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> east coast would actually resolve to a central part of the US or west
> coast IP.
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> Thanks
> in advance,Tim
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