On Tue, Feb 5, 2013 at 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. > 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 <thaiti...@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 >> >> >> >> > > >