Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 425 [Rate centres in NPA 425] [Dial plan for NPA 425]

NXX: 584

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-584 A Maple Valley WA   483E ONVOY, LLC - WA 674      
425-584 1 Maple Valley WA   483E ONVOY, LLC - WA 674   2021-06-26   
425-584 2 Maple Valley WA   483E ONVOY, LLC - WA 674   2021-06-26   
425-584 3 Maple Valley WA   159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2018-11-02   
425-584 5 Maple Valley WA   483E ONVOY, LLC - WA 674   2021-06-26   
425-584 6 Maple Valley WA   483E ONVOY, LLC - WA 674   2021-06-26   
425-584 7 Maple Valley WA   318J COMCAST IP PHONE, LLC 674   2005-03-26   
425-584 8 Maple Valley WA   483E ONVOY, LLC - WA 674   2006-08-15   
425-584 9 Maple Valley WA   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-12-15   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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