An Alaskan WiMax service offered by AT&T that you probably never knew about is shutting down. As we noted in 2007, AT&T's Alascom subsidiary started offering Juneau, Alaska, residents WiMax broadband service starting at $19.95 a month, and while AT&T initially had plans to expand WiMax further, the evolution of LTE sidelined those plans. Stop The Cap directs our attention to the fact that AT&T's now shutting down that service January 31, and users will need to mail in their modems to avoid being charged.