Local Calling Guide

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

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-312 A Rancho Bernardo CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732      
858-312 0 Rancho Bernardo CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2015-07-10   
858-312 1 Rancho Bernardo CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732      
858-312 2 Rancho Bernardo CA   829J PAETEC ITEL, LLC 732   2004-11-15   
858-312 3 Rancho Bernardo CA   829J PAETEC ITEL, LLC 732   2004-11-15   
858-312 4 Rancho Bernardo CA   829J PAETEC ITEL, LLC 732   2004-11-15   
858-312 5 Rancho Bernardo CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732   2006-01-29   
858-312 6 Rancho Bernardo CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732   2004-01-28   
858-312 7 Rancho Bernardo CA SNDICAETDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 732   2007-04-04   
858-312 8 Rancho Bernardo CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732   2008-03-22   
858-312 9 Rancho Bernardo CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2016-03-24   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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