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: 479

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-479 A Renton WA PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-01-25   
425-479 0 Renton WA STTLWAWBXYZ  073H TELNYX LLC 674   2024-02-04   
425-479 1 Renton WA STTLWAWBXSZ  939H COMMIO, LLC 674   2024-04-18   
425-479 2 Renton WA PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2026-02-14   
425-479 3 Renton WA PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2026-02-14   
425-479 5 Renton WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-04-05   
425-479 6 Renton WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-04-05   
425-479 7 Renton WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-04-05   
425-479 8 Renton WA PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-01-25   
425-479 9 Renton WA PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-01-25   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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