On May 22, 2012 4:00 PM, "Paul Porter" <paul.por...@gree.co.jp> wrote: > > Hi NANOG, > > I'm looking for some information on the four largest US mobile phone > carriers and the current state of their IPv6 infrastructure. Specifically, > we are trying to figure out: > > 1. How much of the carrier core and edge for AT&T, Verizon. T-Mobile, and > Sprint are on IPv6 now?
Hi, T-Mobile USA has native ipv6 to all subscribers in all of it's coverage area. But, less than 1% of subscribers use IPv6 because they do not have an IPv6 capable phone. The Nexus S and Galaxy Nexus work well. This device challenge will improve in time. Samsung is doing a good job of bringing IPv6 to Android devices. More info here https://sites.google.com/site/tmoipv6/lg-mytouch > 2. If, and how, are they handling NAT64 for native IPv6 edge devices? Yes, NAT64 / DNS64 is used in the case of reaching ipv4-only nodes. If you are concerned about middleboxs, you should deploy IPv6. > 3. What is the percentage of breakdown for users on native IPv6? Dual > stacked? > Small today. As IPv6 becomes the default setting, that will change. CB > GREE is a mobile social gaming company and we're trying to better > understand what lies between our customer's smart phones and our servers. > My next step will be to reach out to the carriers themselves, but I figured > many of their Network Engineers are probably on the NANOG mailing list and > this would be a great place to start. > > Thanks in advance for your time and assistance. > > Sincerely, > > - Paul Porter > > -- > *Paul G. Porter > *GREE International | Network Engineer > CCNP, CCSP, JNCIS-FWV, JNCIA-Junos > E-mail: paul.por...@gree.net > Mobile: (510) 371-1147 > Twitter: paul_g_porter