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: 438

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-438 A Chula Vista CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
858-438 0 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 1 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 2 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 3 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 4 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 5 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 6 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 7 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 8 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   
858-438 9 Chula Vista CA   649C ONVOY, LLC - CA 732   2022-11-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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