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: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

NXX: 225

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-225 A El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
424-225 0 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2007-05-12   
424-225 1 El Segundo CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-02-26   
424-225 2 El Segundo CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-02-26   
424-225 3 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2007-06-22   
424-225 4 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2007-06-22   
424-225 5 El Segundo CA IRVECAEIDS2  7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730   2016-11-03   
424-225 6 El Segundo CA SNANCALWDS0  7262 XO CALIFORNIA, INC. 730   2008-12-21   
424-225 7 El Segundo CA LSANCAGJDS4  7453 U.S. TELEPACIFIC CORP. - CA 730   2010-04-04   
424-225 8 El Segundo CA LSANCAGJDS4  7453 U.S. TELEPACIFIC CORP. - CA 730   2010-04-04   

Last updated: Sun, 07 Feb 2021 01:52:50 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.