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: 504 [Rate centres in NPA 504] [Dial plan for NPA 504]

NXX: 375

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-375 A Kenner LA NWORLAMAY1X  197D VONAGE AMERICA LLC 490      
504-375 0 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 1 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 2 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 3 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 4 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 5 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 6 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 7 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 8 Kenner LA   197D VONAGE AMERICA LLC 490   2019-02-08   
504-375 9 Kenner LA   749E ONVOY, LLC - LA 490   2019-04-15   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.