Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-324 A Rancho Penasquitos CA SNDACA96DS0  7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      
858-324 0 Rancho Penasquitos CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732   2013-07-11   
858-324 1 Rancho Penasquitos CA   4733 PAETEC COMMUNICATIONS, INC. - CA 732   2004-10-13   
858-324 2 Rancho Penasquitos CA   7262 XO CALIFORNIA, INC. 732   2005-09-19   
858-324 3 Rancho Penasquitos CA   073H TELNYX LLC 732   2017-06-05   
858-324 4 Rancho Penasquitos CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2009-01-14   
858-324 5 Rancho Penasquitos CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2014-01-18   
858-324 6 Rancho Penasquitos CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2014-05-02   
858-324 7 Rancho Penasquitos CA   7575 CENTURYLINK COMMUNICATIONS LLC 732   2014-04-11   
858-324 8 Rancho Penasquitos CA   649C ONVOY, LLC - CA 732   2016-01-25   
858-324 9 Rancho Penasquitos CA   7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.