Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 564 [Rate centres in NPA 564] [Dial plan for NPA 564]

NXX: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
564-777 A Castle Rock WA PTLDOR13X9X  145J TERRA NOVA TELECOM INC. 672      
564-777 7 Castle Rock WA PTLDOR13X9X  145J TERRA NOVA TELECOM INC. 672   2019-06-12   
564-777 9 Castle Rock WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 672   2021-01-14   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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