Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 858 [Rate centres in NPA 858] [Dial plan for NPA 858]

NXX: 417

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-417 A National City CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-12-27   
858-417 0 National City CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2024-12-30   
858-417 1 National City CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2026-06-25   
858-417 2 National City CA   649C ONVOY, LLC - CA 732   2026-08-17   
858-417 3 National City CA   649C ONVOY, LLC - CA 732   2026-08-17   
858-417 4 National City CA   649C ONVOY, LLC - CA 732   2026-09-27   
858-417 5 National City CA SNDGCAJW6MD  073H TELNYX LLC 732   2025-08-22   
858-417 6 National City CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-12-27   
858-417 7 National City CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-12-27   
858-417 8 National City CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-12-27   
858-417 9 National City CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2024-12-27   

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

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