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: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-406 A New Orleans LA NWORLAMAYTX  732J NUSO, LLC 490      
504-406 0 New Orleans LA   749E ONVOY, LLC - LA 490   2024-04-14   
504-406 1 New Orleans LA   749E ONVOY, LLC - LA 490   2023-10-11   
504-406 2 New Orleans LA   749E ONVOY, LLC - LA 490   2023-10-11   
504-406 3 New Orleans LA   732J NUSO, LLC 490   2023-10-21   
504-406 4 New Orleans LA   150C VOICESTREAM GSM I, LLC 490   2012-04-15   
504-406 5 New Orleans LA   150C VOICESTREAM GSM I, LLC 490   2012-04-15   
504-406 6 New Orleans LA   150C VOICESTREAM GSM I, LLC 490   2012-04-15   
504-406 7 New Orleans LA   150C VOICESTREAM GSM I, LLC 490   2012-04-15   
504-406 8 New Orleans LA   150C VOICESTREAM GSM I, LLC 490   2012-04-15   
504-406 9 New Orleans LA   150C VOICESTREAM GSM I, LLC 490   2012-04-15   

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

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