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: 455

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-455 A Culver City CA LSANCAJWIMD  965H FRACTEL, LLC 730      
424-455 0 Culver City CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2021-06-26   
424-455 1 Culver City CA   996H AIRESPRING, INC. 730   2020-09-11   
424-455 2 Culver City CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2021-06-26   
424-455 3 Culver City CA   649C ONVOY, LLC - CA 730   2021-07-12   
424-455 4 Culver City CA   6529 T-MOBILE USA, INC. 730   2024-10-21   
424-455 5 Culver City CA   965H FRACTEL, LLC 730   2020-07-26   
424-455 6 Culver City CA   649C ONVOY, LLC - CA 730   2021-07-12   
424-455 7 Culver City CA   516J TON80 COMMUNICATIONS, LLC 730   2021-07-01   
424-455 8 Culver City CA   649C ONVOY, LLC - CA 730   2021-07-12   
424-455 9 Culver City CA   649C ONVOY, LLC - CA 730   2021-07-12   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.