[160443] in North American Network Operators' Group
RE: AT&T Uverse/DSL Network Engineer DNS question
daemon@ATHENA.MIT.EDU (Tim Haak)
Wed Feb 6 09:39:13 2013
From: Tim Haak <thaitim43@hotmail.com>
CC: "nanog@nanog.org" <nanog@nanog.org>
Date: Wed, 6 Feb 2013 09:39:00 -0500
In-Reply-To: <CD36B648.4FA9%wbailey@satelliteintelligencegroup.com>
Reply-To: tim.haak@hotmail.com
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Thanks for checking guys. I checked RIR registration and they have those 2 =
IPs registered in =0A=
Texas. I have read that AT&T uses anycast for name resolution for =0A=
Uverse/DSL customers. I can only check from my account in Florida and =0A=
the DNS query responses so far resolve as if I were in the Central =0A=
United States because the recursive resolvers are registered in Texas=2C I=
=0A=
as far as I can tell.=20
I just need to know if these are the only DNS server IPs they hand out to t=
heir Uverse/DSL customers.
Thanks=2C
Tim Haak
> From: wbailey@satelliteintelligencegroup.com
> To: jof@thejof.com=3B tim.haak@hotmail.com
> Subject: Re: AT&T Uverse/DSL Network Engineer DNS question
> Date: Tue=2C 5 Feb 2013 21:15:46 +0000
> CC: nanog@nanog.org
>=20
> Here in Orange County=2C CA I've got a /28 with Uverse Residential with t=
he
> same DNS servers as mentioned below.
>=20
> FYI=20
>=20
> On 2/5/13 1:10 PM=2C "Jonathan Lassoff" <jof@thejof.com> wrote:
>=20
> >These appear to be an anycasted service=2C as I reach different destinat=
ions
> >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=2C there.
> >
> >--j
> >
> >On Tue=2C Feb 5=2C 2013 at 1:01 PM=2C Tim Haak <thaitim43@hotmail.com> w=
rote:
> >
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> Hi=2C
> >>
> >>
> >>
> >>
> >> 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 custome=
rs
> >> 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=2C us=
ers
> >>on
> >> the
> >> east coast would actually resolve to a central part of the US or west
> >> coast IP.
> >>
> >>
> >>
> >> Thanks
> >> in advance=2CTim
> >>
> >>
> >>
> >>
> >
>=20
>=20
>=20
=
