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: 220

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-220 A Modesto CA SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2024-05-18   
350-220 0 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-05-19   
350-220 1 Modesto CA SKTNCASL5MD  732J NUSO, LLC 738   2024-05-19   
350-220 2 Modesto CA SKTNCASL5MD  732J NUSO, LLC 738   2024-05-19   
350-220 3 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-06-22   
350-220 4 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-06-22   
350-220 5 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-06-22   
350-220 6 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-06-22   
350-220 7 Modesto CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-06-22   
350-220 8 Modesto CA SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2024-05-18   
350-220 9 Modesto CA SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2024-05-18   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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