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: 500

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-500 A Atwater CA SKTNCA01XKZ  624H ONVOY SPECTRUM, LLC 738   2024-01-15   
350-500 0 Atwater CA SKTNCA01XKZ  624H ONVOY SPECTRUM, LLC 738   2024-01-15   
350-500 1 Atwater CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-03-01   
350-500 2 Atwater CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-03-01   
350-500 3 Atwater CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-03-01   
350-500 4 Atwater CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-04-04   
350-500 5 Atwater CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-04-04   
350-500 6 Atwater CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-02-22   
350-500 7 Atwater CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-02-22   
350-500 8 Atwater CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-02-22   

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

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