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: 525

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-525 A Santa Monica: Mar Vista DA CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730      
424-525 0 Santa Monica: Mar Vista DA CA   981E BANDWIDTH.COM CLEC, LLC - CA 730      
424-525 1 Santa Monica: Mar Vista DA CA   649C ONVOY, LLC - CA 730      
424-525 2 Santa Monica: Mar Vista DA CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730      
424-525 3 Santa Monica: Mar Vista DA CA SNMNCAXPX2Z  624H ONVOY SPECTRUM, LLC 730      
424-525 4 Santa Monica: Mar Vista DA CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730      
424-525 5 Santa Monica: Mar Vista DA CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730      
424-525 6 Santa Monica: Mar Vista DA CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730      
424-525 7 Santa Monica: Mar Vista DA CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730      
424-525 8 Santa Monica: Mar Vista DA CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730      
424-525 9 Santa Monica: Mar Vista DA CA   649C ONVOY, LLC - CA 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.