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Phone number details for 509-420
509-420 numbers
The 509-420 exchange is serviced by the following companies within the RICHLAND ratecenter.
AT&T LOCAL
Call are routed trough OCN 7421 and CLLI - SPKNWA01VMD (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in SPOKANE.
Working 509-420-xxxx Local Exchanges
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