Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 350 [Rate centres in NPA 350] [Dial plan for NPA 350]

NXX: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-204 A Atwater CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738      
350-204 0 Atwater CA   073H TELNYX LLC 738   2023-05-07   
350-204 1 Atwater CA   6529 T-MOBILE USA, INC. 738   2023-11-09   
350-204 2 Atwater CA   6529 T-MOBILE USA, INC. 738   2023-11-09   
350-204 3 Atwater CA   6529 T-MOBILE USA, INC. 738   2023-09-08   
350-204 4 Atwater CA   6529 T-MOBILE USA, INC. 738   2023-09-08   
350-204 5 Atwater CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2023-08-13   
350-204 6 Atwater CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2023-03-20   
350-204 7 Atwater CA   6529 T-MOBILE USA, INC. 738   2023-03-17   
350-204 8 Atwater CA   6529 T-MOBILE USA, INC. 738   2023-03-17   
350-204 9 Atwater CA   6529 T-MOBILE USA, INC. 738   2023-03-17   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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