Thanks for checking guys. I checked RIR registration and they have those 2 IPs registered in Texas. I have read that AT&T 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: AT&T Uverse/DSL Network Engineer DNS question > Date: Tue, 5 Feb 2013 21:15:46 +0000 > 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 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 > >> > >> > >> > >> > > > > >