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: 620

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-620 A Coulee Dam WA SPKNWA01XXX  483E ONVOY, LLC - WA 676      
509-620 0 Coulee Dam WA SPKNWA01XXX  483E ONVOY, LLC - WA 676      
509-620 1 Coulee Dam WA SPKNWA01XXX  483E ONVOY, LLC - WA 676      
509-620 2 Coulee Dam WA SPKNWA01XXX  483E ONVOY, LLC - WA 676   2016-01-07   
509-620 3 Coulee Dam WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2016-02-28   
509-620 4 Coulee Dam WA SPKNWAKY0MD  006F BANDWIDTH.COM CLEC, LLC - WA 676   2016-10-23   
509-620 5 Coulee Dam WA SPKNWAKY0MD  006F BANDWIDTH.COM CLEC, LLC - WA 676   2016-10-23   
509-620 6 Coulee Dam WA SPKNWAKY0MD  006F BANDWIDTH.COM CLEC, LLC - WA 676   2016-10-23   
509-620 7 Coulee Dam WA YAKMWAWE7MD  508J CENTURYLINK COMMUNICATIONS, LLC 676   2015-12-02   
509-620 8 Coulee Dam WA   792K CHARTER IP ENABLED SERVICES, LLC 676   2019-05-22   
509-620 9 Coulee Dam WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 676   2016-03-31   

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

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