Local Calling Guide

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NPA: 858 [Rate centres in NPA 858] [Dial plan for NPA 858]

NXX: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-440 A La Mesa CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2025-10-17   
858-440 0 La Mesa CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2026-01-23   
858-440 1 La Mesa CA SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2026-02-17   
858-440 7 La Mesa CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2026-05-18   
858-440 8 La Mesa CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2026-05-18   
858-440 9 La Mesa CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2025-10-17   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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