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: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-331 A Othello WA OTHEWA01DS0  9638 QWEST CORPORATION 676      
509-331 0 Othello WA   9638 QWEST CORPORATION 676      
509-331 1 Othello WA   9638 QWEST CORPORATION 676      
509-331 2 Othello WA   9638 QWEST CORPORATION 676      
509-331 3 Othello WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2006-11-03   
509-331 4 Othello WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2004-10-12   
509-331 5 Othello WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2006-06-19   
509-331 6 Othello WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2007-04-14   
509-331 7 Othello WA   483E ONVOY, LLC - WA 676   2006-10-14   
509-331 8 Othello WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2006-05-18   
509-331 9 Othello WA   6010 NEW CINGULAR WIRELESS PCS, LLC 676   2014-10-08   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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