Local Calling Guide

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

NXX: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-521 A Rancho Bernardo CA RBRNCA11DS0  9740 PACIFIC BELL 732      
858-521 0 Rancho Bernardo CA   9740 PACIFIC BELL 732      
858-521 1 Rancho Bernardo CA   9740 PACIFIC BELL 732      
858-521 2 Rancho Bernardo CA   9740 PACIFIC BELL 732      
858-521 3 Rancho Bernardo CA   9740 PACIFIC BELL 732      
858-521 4 Rancho Bernardo CA   9740 PACIFIC BELL 732      
858-521 5 Rancho Bernardo CA   9740 PACIFIC BELL 732      
858-521 6 Rancho Bernardo CA   9740 PACIFIC BELL 732      
858-521 7 Rancho Bernardo CA   9740 PACIFIC BELL 732      
858-521 8 Rancho Bernardo CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732   2007-09-18   
858-521 9 Rancho Bernardo CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732   2007-09-18   

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

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