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: 537

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-537 A New Orleans LA   749E ONVOY, LLC - LA 490   2025-05-05   
504-537 0 New Orleans LA   749E ONVOY, LLC - LA 490   2025-05-05   
504-537 4 New Orleans LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490   2025-07-05   
504-537 5 New Orleans LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490   2025-07-05   
504-537 6 New Orleans LA   318J COMCAST IP PHONE, LLC 490   2025-06-12   
504-537 7 New Orleans LA   6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490   2025-07-05   

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

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