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: 477

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-477 A Issaquah WA STTLWAWBXQZ  197D VONAGE AMERICA LLC 674      
425-477 0 Issaquah WA   6529 T-MOBILE USA, INC. 674   2020-11-14   
425-477 1 Issaquah WA   6529 T-MOBILE USA, INC. 674   2020-11-14   
425-477 2 Issaquah WA   624H ONVOY SPECTRUM, LLC 674   2021-10-10   
425-477 3 Issaquah WA   624H ONVOY SPECTRUM, LLC 674   2021-10-10   
425-477 4 Issaquah WA   197D VONAGE AMERICA LLC 674   2020-11-05   
425-477 5 Issaquah WA   624H ONVOY SPECTRUM, LLC 674   2021-10-10   
425-477 6 Issaquah WA   624H ONVOY SPECTRUM, LLC 674   2021-10-10   
425-477 7 Issaquah WA   197D VONAGE AMERICA LLC 674   2020-11-05   
425-477 8 Issaquah WA   624H ONVOY SPECTRUM, LLC 674   2021-10-10   
425-477 9 Issaquah WA   006F BANDWIDTH.COM CLEC, LLC - WA 674   2020-11-09   

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

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