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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-397 A El Segundo CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730      
424-397 0 El Segundo CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2015-06-01   
424-397 1 El Segundo CA   649C ONVOY, LLC - CA 730   2016-10-27   
424-397 2 El Segundo CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2016-12-08   
424-397 3 El Segundo CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2016-01-10   
424-397 4 El Segundo CA   6529 T-MOBILE USA, INC. 730   2017-10-13   
424-397 5 El Segundo CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2016-12-01   
424-397 6 El Segundo CA   7139 TELEPORT COMMUNICATIONS GROUP - LOS ANGELES 730   2015-12-07   
424-397 7 El Segundo CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2015-11-09   
424-397 8 El Segundo CA   7139 TELEPORT COMMUNICATIONS GROUP - LOS ANGELES 730   2016-06-06   
424-397 9 El Segundo CA   6529 T-MOBILE USA, INC. 730   2016-09-22   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.