The 920-266 exchange is serviced by the following companies within the FONDDU LAC ratecenter.
AMERITECH WISCONSIN
Call are routed trough OCN 9327 and CLLI - FDULWI01DS0 (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in FOND DU LAC.
Who's number is 920-266 Numbers?