The 509-931 exchange is serviced by the following companies within the SPOKANE ratecenter.
"PAC - WEST TELECOMM, INC. - WA"
Call are routed trough OCN 2819 and CLLI - SPKNWA01XYZ (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in SPOKANE.
Who's number is 509-931 Numbers?