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 MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2025-08-23   
509-706 0 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2025-10-31   
509-706 1 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2025-12-26   
509-706 6 Kennewick WA SPKNWADZBMD  490J BOOST SUBSCRIBERCO L.L.C. 676   2025-11-13   
509-706 8 Kennewick WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2026-10-25   
509-706 9 Kennewick WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2025-08-23   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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