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: 575

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-575 A Bellevue WA   6529 T-MOBILE USA, INC. 674   2025-12-18   
425-575 4 Bellevue WA   6529 T-MOBILE USA, INC. 674   2025-12-19   
425-575 5 Bellevue WA   6529 T-MOBILE USA, INC. 674   2025-12-19   
425-575 6 Bellevue WA   6529 T-MOBILE USA, INC. 674   2025-12-19   
425-575 7 Bellevue WA   6529 T-MOBILE USA, INC. 674   2025-12-19   
425-575 8 Bellevue WA   6529 T-MOBILE USA, INC. 674   2025-12-18   
425-575 9 Bellevue WA   6529 T-MOBILE USA, INC. 674   2025-12-18   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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