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: 384

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-384 A Santa Monica: Mar Vista DA CA LSANCA03DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
424-384 0 Santa Monica: Mar Vista DA CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2015-03-29   
424-384 1 Santa Monica: Mar Vista DA CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2015-04-30   
424-384 2 Santa Monica: Mar Vista DA CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2015-06-07   
424-384 3 Santa Monica: Mar Vista DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-06-15   
424-384 4 Santa Monica: Mar Vista DA CA   4129 O1 COMMUNICATIONS, INC. - CA 730   2015-07-03   
424-384 5 Santa Monica: Mar Vista DA CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2015-06-24   
424-384 6 Santa Monica: Mar Vista DA CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2015-03-16   
424-384 7 Santa Monica: Mar Vista DA CA   6529 T-MOBILE USA, INC. 730   2015-05-15   
424-384 8 Santa Monica: Mar Vista DA CA   6529 T-MOBILE USA, INC. 730   2015-03-25   
424-384 9 Santa Monica: Mar Vista DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-03-23   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.