On Tue, Feb 5, 2013 at 1:10 PM, Jonathan Lassoff <jof@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.
Just confirmed this. As these resolvers traverse and query your servers, they'll have different source IPs, depending on the regional resolver. Return differentiated DNS responses, based on that. --j
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@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