Ok, I get that in principle... but that particular combination sounds awfully suspicious. The DoD just happens to have extra IP space, and they just happen to lease it to cell phone carriers? Hmmmmmmmmm....
I mean, yeah, it could all be totally innocuous, but I'm still suspicious that there might be something else going on. I'm not exactly a card carrying member of the tinfoil-hat brigade, but I trust our government about as far as I can throw it... :-)