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: 900

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-900 A Tracy CA SKTNCA01XKZ  624H ONVOY SPECTRUM, LLC 738   2024-01-19   
350-900 0 Tracy CA   624H ONVOY SPECTRUM, LLC 738   2024-01-19   
350-900 1 Tracy CA   649C ONVOY, LLC - CA 738   2024-01-20   
350-900 2 Tracy CA   649C ONVOY, LLC - CA 738   2024-02-24   
350-900 3 Tracy CA   649C ONVOY, LLC - CA 738   2024-02-24   
350-900 4 Tracy CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2024-03-23   
350-900 5 Tracy CA   649C ONVOY, LLC - CA 738   2024-06-07   
350-900 6 Tracy CA   649C ONVOY, LLC - CA 738   2024-06-07   
350-900 7 Tracy CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 738   2024-02-20   
350-900 8 Tracy CA   649C ONVOY, LLC - CA 738   2024-01-20   
350-900 9 Tracy CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 738   2025-08-04   

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

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