Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 672

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-672 A Arvin CA   6529 T-MOBILE USA, INC. 734   2025-05-18   
661-672 0 Arvin CA   6529 T-MOBILE USA, INC. 734   2025-06-29   
661-672 1 Arvin CA   6529 T-MOBILE USA, INC. 734   2025-06-29   
661-672 2 Arvin CA   6529 T-MOBILE USA, INC. 734   2025-06-29   
661-672 3 Arvin CA   6529 T-MOBILE USA, INC. 734   2025-06-29   
661-672 9 Arvin CA   6529 T-MOBILE USA, INC. 734   2025-05-18   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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