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: 510

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-510 A Compton: Compton DA CA   6529 T-MOBILE USA, INC. 730   2024-06-22   
424-510 0 Compton: Compton DA CA   624H ONVOY SPECTRUM, LLC 730   2024-06-23   
424-510 1 Compton: Compton DA CA   624H ONVOY SPECTRUM, LLC 730   2024-06-23   
424-510 2 Compton: Compton DA CA   624H ONVOY SPECTRUM, LLC 730   2024-06-23   
424-510 3 Compton: Compton DA CA   624H ONVOY SPECTRUM, LLC 730   2024-06-23   
424-510 4 Compton: Compton DA CA   6529 T-MOBILE USA, INC. 730   2024-06-23   
424-510 5 Compton: Compton DA CA   6529 T-MOBILE USA, INC. 730   2024-06-23   
424-510 6 Compton: Compton DA CA   6529 T-MOBILE USA, INC. 730   2024-06-23   
424-510 7 Compton: Compton DA CA   6529 T-MOBILE USA, INC. 730   2024-06-23   
424-510 8 Compton: Compton DA CA   624H ONVOY SPECTRUM, LLC 730   2024-06-23   
424-510 9 Compton: Compton DA CA   6529 T-MOBILE USA, INC. 730   2024-06-22   

Last updated: Sun, 06 Oct 2024 02:51:32 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.