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: 888

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-888 A La Jolla CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732      
858-888 0 La Jolla CA SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2011-03-31   
858-888 1 La Jolla CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732   2019-09-11   
858-888 2 La Jolla CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2010-08-20   
858-888 3 La Jolla CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2010-08-20   
858-888 4 La Jolla CA SNDACA96DS0  7147 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 732   2011-01-09   
858-888 5 La Jolla CA SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2011-02-05   
858-888 6 La Jolla CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2010-12-19   
858-888 7 La Jolla CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732   2010-08-30   
858-888 8 La Jolla CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2010-08-19   
858-888 9 La Jolla CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2010-08-20   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.