Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 774

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-774 A Orange CA   6529 T-MOBILE USA, INC. 730   2025-01-02   
657-774 8 Orange CA   6529 T-MOBILE USA, INC. 730      
657-774 9 Orange CA   6529 T-MOBILE USA, INC. 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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