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: 706

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-706 A Kennewick WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2025-08-23   
509-706 0 Kennewick WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2025-10-31   
509-706 5 Kennewick WA   6270 UNITED STATES CELLULAR - WA 676   2025-10-06   
509-706 9 Kennewick WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2025-08-23   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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