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: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-274 A Sunnyside WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676      
509-274 4 Sunnyside WA   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 676   2025-06-16   
509-274 8 Sunnyside WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2023-07-09   
509-274 9 Sunnyside WA MLWDWAAA2MD  6010 NEW CINGULAR WIRELESS PCS, LLC 676   2023-04-22   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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