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]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-999 4 La Jolla CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2011-04-05   
858-999 5 La Jolla CA SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2011-03-31   
858-999 6 La Jolla CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2011-02-15   
858-999 7 La Jolla CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2011-02-15   
858-999 8 La Jolla CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2011-12-04   
858-999 9 La Jolla CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2010-11-21   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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