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: 587

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-587 A Brewster WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676      
509-587 0 Brewster WA   483E ONVOY, LLC - WA 676   2016-02-23   
509-587 1 Brewster WA   483E ONVOY, LLC - WA 676   2017-09-15   
509-587 2 Brewster WA   663D ELTOPIA COMMUNICATIONS, LLC - WA 676   2008-06-28   
509-587 3 Brewster WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676      
509-587 4 Brewster WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2004-06-05   
509-587 6 Brewster WA   483E ONVOY, LLC - WA 676   2007-06-15   
509-587 7 Brewster WA   508J CENTURYLINK COMMUNICATIONS, LLC 676   2015-01-28   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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