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: 445

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-445 A San Diego: Mira Mesa DA CA   6529 T-MOBILE USA, INC. 732   2026-01-23   
858-445 0 San Diego: Mira Mesa DA CA   649C ONVOY, LLC - CA 732   2026-01-26   
858-445 4 San Diego: Mira Mesa DA CA   490J DISH WIRELESS, LLC 732   2026-01-26   
858-445 5 San Diego: Mira Mesa DA CA   490J DISH WIRELESS, LLC 732   2026-06-13   
858-445 8 San Diego: Mira Mesa DA CA   6529 T-MOBILE USA, INC. 732   2026-01-23   
858-445 9 San Diego: Mira Mesa DA CA   6529 T-MOBILE USA, INC. 732   2026-01-23   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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