Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 504 [Rate centres in NPA 504] [Dial plan for NPA 504]

NXX: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-399 A New Orleans LA NWORLAMA46Z  749E ONVOY, LLC - LA 490      
504-399 0 New Orleans LA   749E ONVOY, LLC - LA 490   2017-10-09   
504-399 1 New Orleans LA   749E ONVOY, LLC - LA 490   2017-10-09   
504-399 2 New Orleans LA   749E ONVOY, LLC - LA 490   2017-10-09   
504-399 3 New Orleans LA   749E ONVOY, LLC - LA 490   2017-10-09   
504-399 4 New Orleans LA   749E ONVOY, LLC - LA 490   2017-10-09   
504-399 5 New Orleans LA   749E ONVOY, LLC - LA 490   2017-10-09   
504-399 6 New Orleans LA   749E ONVOY, LLC - LA 490   2017-10-09   
504-399 7 New Orleans LA   749E ONVOY, LLC - LA 490   2017-10-09   
504-399 8 New Orleans LA   153F BANDWIDTH.COM CLEC, LLC - LA 490   2018-08-13   
504-399 9 New Orleans LA   477H AIRUS, INC. - LA 490   2018-05-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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