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: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-578 A New Orleans LA NWORLASDIMD  6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490      
504-578 0 New Orleans LA NWORLASDIMD  6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490      
504-578 1 New Orleans LA NWORLASDIMD  6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490      
504-578 2 New Orleans LA NWORLAMA86Z  5562 METROPCS, INC. 490   2006-01-27   
504-578 3 New Orleans LA NWORLAMA86Z  5562 METROPCS, INC. 490   2006-01-27   
504-578 4 New Orleans LA NWORLAMA86Z  5562 METROPCS, INC. 490   2014-04-15   
504-578 5 New Orleans LA NWORLAMA37Z  150C VOICESTREAM GSM I, LLC 490   2011-08-12   
504-578 6 New Orleans LA NWORLAMA86Z  5562 METROPCS, INC. 490   2014-04-15   
504-578 7 New Orleans LA NWORLASDIMD  6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490      
504-578 8 New Orleans LA NWORLAMA37Z  150C VOICESTREAM GSM I, LLC 490   2016-06-06   
504-578 9 New Orleans LA NWORLASDIMD  6505 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 490      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.