That's odd. I looked up that range just the other day for some reason that now escapes me. I'd got them labeled as Cingular Mobile, with assorted sublets. This is probably backward, though.
Incidentally, I know we are Not Supposed To Do This, but if you google "Wireless Data Service Provider Corporation" the SERP text in the first hit --first for me anyway-- is pretty hilarious. I believe the operative word is "cloaking" :)