The following charts, courtesy of Allnet Insights & Analytics, show licensed POPs for Verizon, AT&T, T-Mobile and Dish Networks in the MVDDS, 24 GHz, LMDS, 39 GHz and 47 GHz bands. None of them holds licenses in the 24 or 47 GHz bands, but their existing holdings provide an indication of where they might want to add to their stash. LMDS includes bands 28, 29 and 31 GHz, while the MVDDS is 12.2-12.7 GHz.
For more on spectrum ownership in the U.S., see this past summer's Special Report.