The 509-374 exchange is serviced by the following companies within the KENNEWICK ratecenter.
FRONTIER COMMUNICATIONS NORTHWEST INC. - WA
Call are routed trough OCN 4324 and CLLI - KNWCWAXADS2 (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in HIGHLANDS 5ESS.
Who's number is 509-374 Numbers?