Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 425 [Rate centres in NPA 425] [Dial plan for NPA 425]

NXX: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-578 A Maple Valley WA STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      
425-578 0 Maple Valley WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-02-12   
425-578 1 Maple Valley WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-02-12   
425-578 2 Maple Valley WA STTLWAWB28Z  490J DISH WIRELESS, LLC 674   2023-07-03   
425-578 4 Maple Valley WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2010-06-20   
425-578 5 Maple Valley WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2018-06-09   
425-578 7 Maple Valley WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2015-10-11   
425-578 9 Maple Valley WA STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.