Local Calling Guide

Area code/prefix search

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

NXX: 344

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-344 A La Jolla CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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