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: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-221 A Lodi CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-07-05   
350-221 0 Lodi CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-07-05   
350-221 1 Lodi CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-07-27   
350-221 2 Lodi CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2025-09-06   
350-221 3 Lodi CA SKTNCA01XFY  649C ONVOY, LLC - CA 738   2024-12-02   
350-221 4 Lodi CA SKTNCA01X6Y  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 738   2024-07-12   
350-221 5 Lodi CA SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2024-09-28   
350-221 6 Lodi CA SKTNCASLAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-09-14   
350-221 7 Lodi CA SKTNCAGSGT0  6010 NEW CINGULAR WIRELESS PCS, LLC 738   2025-06-14   
350-221 8 Lodi CA SKTNCASLAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-11-12   
350-221 9 Lodi CA SKTOCAOY6MD  6529 T-MOBILE USA, INC. 738   2024-07-07   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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