The 920-791 exchange is serviced by the following companies within the BEAVER DAM ratecenter.
"T-MOBILE USA, INC."
Call are routed trough OCN 6529 and CLLI - WKSHWIROCM1 (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in WAUKESHA.
Who's number is 920-791 Numbers?