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: 512

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-512 A Beverly Hills CA   829J PAETEC ITEL, LLC 730      
424-512 0 Beverly Hills CA   073H TELNYX LLC 730   2017-04-24   
424-512 1 Beverly Hills CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2017-12-21   
424-512 2 Beverly Hills CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2017-12-21   
424-512 3 Beverly Hills CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2018-05-11   
424-512 4 Beverly Hills CA   649C ONVOY, LLC - CA 730   2019-03-24   
424-512 5 Beverly Hills CA   829J PAETEC ITEL, LLC 730   2017-04-17   
424-512 6 Beverly Hills CA   829J PAETEC ITEL, LLC 730   2017-04-17   
424-512 7 Beverly Hills CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730   2020-05-01   
424-512 8 Beverly Hills CA   649C ONVOY, LLC - CA 730   2020-06-07   
424-512 9 Beverly Hills CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2017-04-21   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.