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: 977

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-977 A Creston WA CETNWA010MD  1477 INLAND CELLULAR LLC 676      
509-977 1 Creston WA CETNWA010MD  1477 INLAND CELLULAR LLC 676   2004-06-14   
509-977 2 Creston WA CETNWA010MD  1477 INLAND CELLULAR LLC 676   2004-06-14   
509-977 4 Creston WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2004-06-12   
509-977 7 Creston WA YAKMWAWE7MD  508J CENTURYLINK COMMUNICATIONS, LLC 676   2015-01-28   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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