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: 370

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-370 A Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490      
504-370 0 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2018-11-22   
504-370 1 Lafitte LA NWORLASD1MD  073H TELNYX LLC 490   2019-03-19   
504-370 2 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2019-06-04   
504-370 3 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2019-06-04   
504-370 4 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2019-06-04   
504-370 5 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2019-06-04   
504-370 6 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2020-04-27   
504-370 7 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2020-04-27   
504-370 8 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2019-04-15   
504-370 9 Lafitte LA NWORLAMA46Z  749E ONVOY, LLC - LA 490   2019-04-15   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.