Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 858 [Rate centres in NPA 858] [Dial plan for NPA 858]

NXX: 924

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-924 A Rancho Bernardo CA RBRNCA11DS0  9740 PACIFIC BELL 732      
858-924 0 Rancho Bernardo CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2014-03-18   
858-924 1 Rancho Bernardo CA   318J COMCAST IP PHONE, LLC 732   2012-09-10   
858-924 2 Rancho Bernardo CA   6010 NEW CINGULAR WIRELESS PCS, LLC 732   2014-04-26   
858-924 3 Rancho Bernardo CA   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2013-10-04   
858-924 4 Rancho Bernardo CA   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2013-10-04   
858-924 5 Rancho Bernardo CA   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2013-10-04   
858-924 6 Rancho Bernardo CA   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2013-10-04   
858-924 7 Rancho Bernardo CA   829J PAETEC ITEL, LLC 732   2013-11-13   
858-924 8 Rancho Bernardo CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2014-07-20   
858-924 9 Rancho Bernardo CA   9740 PACIFIC BELL 732      

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

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