Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 509 [Rate centres in NPA 509] [Dial plan for NPA 509]

NXX: 352

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-352 A Spokane WA SPKNWA01XXX  483E ONVOY, LLC - WA 676      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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