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: 387

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-387 A New Orleans LA NWORLAMAYEX  515J IP HORIZON LLC 490      
504-387 0 New Orleans LA   150C VOICESTREAM GSM I, LLC 490   2021-11-07   
504-387 1 New Orleans LA   515J IP HORIZON LLC 490   2021-05-23   
504-387 2 New Orleans LA   624H ONVOY SPECTRUM, LLC 490   2021-09-26   
504-387 3 New Orleans LA   624H ONVOY SPECTRUM, LLC 490   2021-09-26   
504-387 4 New Orleans LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490   2023-08-14   
504-387 5 New Orleans LA   624H ONVOY SPECTRUM, LLC 490   2021-09-26   
504-387 6 New Orleans LA   749E ONVOY, LLC - LA 490   2021-10-02   
504-387 7 New Orleans LA   749E ONVOY, LLC - LA 490   2021-10-02   
504-387 8 New Orleans LA   749E ONVOY, LLC - LA 490   2021-10-02   
504-387 9 New Orleans LA   749E ONVOY, LLC - LA 490   2021-10-02   

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

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