The logs show that the app has been briefly tested by a handful of people using what is almost certainly an iPhone 5, evidently running iOS 5, sporting two distinct sets of mobile network codes (MNC) / mobile country codes (MCC). Those codes can be used to uniquely identify mobile carriers.
Sure enough, some registrations for the app which the developer also asked not to be named were logged from a new Apple device, using the MNC/MCC codes from both Verizon and AT&T.
This would appear to confirm remarks made by Verizon CFO Fran Shammo in April.
"The fluctuation, I believe, will come when a new device from Apple is launched, whenever that may be, and that we will be, on the first time, on equal footing with our competitors on a new phone hitting the market, which will also be a global device."