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: 510

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-510 A Halls Lake WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674      
425-510 0 Halls Lake WA   483E ONVOY, LLC - WA 674   2021-02-15   
425-510 1 Halls Lake WA   318J COMCAST IP PHONE, LLC 674   2020-10-31   
425-510 2 Halls Lake WA   318J COMCAST IP PHONE, LLC 674   2020-10-30   
425-510 3 Halls Lake WA   318J COMCAST IP PHONE, LLC 674   2020-10-31   
425-510 4 Halls Lake WA   318J COMCAST IP PHONE, LLC 674   2020-10-31   
425-510 5 Halls Lake WA   483E ONVOY, LLC - WA 674   2020-11-16   
425-510 6 Halls Lake WA   483E ONVOY, LLC - WA 674   2020-11-16   
425-510 7 Halls Lake WA   483E ONVOY, LLC - WA 674   2021-02-15   
425-510 8 Halls Lake WA   6529 T-MOBILE USA, INC. 674   2022-08-01   
425-510 9 Halls Lake WA   6529 T-MOBILE USA, INC. 674   2022-08-01   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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