Local Calling Guide

Area code/prefix search

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

NXX: 525

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-525 A La Jolla CA SNDGCA15DS0  9740 PACIFIC BELL 732      
858-525 0 La Jolla CA   9740 PACIFIC BELL 732      
858-525 1 La Jolla CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2003-10-29   
858-525 2 La Jolla CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2004-03-03   
858-525 3 La Jolla CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2004-03-03   
858-525 4 La Jolla CA   649C ONVOY, LLC - CA 732   2023-06-09   
858-525 5 La Jolla CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2005-04-04   
858-525 6 La Jolla CA   829J PAETEC ITEL, LLC 732   2004-12-07   
858-525 7 La Jolla CA   9740 PACIFIC BELL 732      
858-525 8 La Jolla CA   9740 PACIFIC BELL 732      
858-525 9 La Jolla CA   9740 PACIFIC BELL 732      

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

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