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 0 Castle Rock WA PTLDORWAX7Y  073H TELNYX LLC 672   2022-09-02   
564-777 1 Castle Rock WA PTLDORWAX7Y  073H TELNYX LLC 672   2023-06-03   
564-777 2 Castle Rock WA PTLDOR13XFX  318J COMCAST IP PHONE, LLC 672   2022-07-05   
564-777 5 Castle Rock WA PTLDORWADS2  483E ONVOY, LLC - WA 672   2021-06-26   
564-777 6 Castle Rock WA PTLDORWADS2  483E ONVOY, LLC - WA 672   2021-06-26   
564-777 7 Castle Rock WA   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: Sat, 05 Apr 2025 03:03:23 UTC

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