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: 303

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
504-303 A Kenner LA NWORLAMAYBX  7421 AT&T - LOCAL 490      
504-303 0 Kenner LA NWORLAMTXKX  150C VOICESTREAM GSM I, LLC 490   2007-09-30   
504-303 1 Kenner LA NWORLAMTXKX  150C VOICESTREAM GSM I, LLC 490   2007-09-30   
504-303 2 Kenner LA NWORLAMTXKX  150C VOICESTREAM GSM I, LLC 490   2007-09-30   
504-303 3 Kenner LA NWORLAMAYBX  7421 AT&T - LOCAL 490      
504-303 4 Kenner LA MTRELANJ2MD  3232 LEVEL 3 COMMUNICATIONS, LLC - LA 490   2007-02-20   
504-303 5 Kenner LA NWORLAMODC0  7488 LEVEL 3 TELECOM OF LOUISIANA, LLC - LA 490   2007-04-22   
504-303 6 Kenner LA KNNRLABRDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 490   2008-04-21   
504-303 7 Kenner LA KNNRLABRDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 490   2008-04-21   
504-303 8 Kenner LA NWORLAMA51Z  586E YMAX COMMUNICATIONS CORP. - LA 490   2008-06-16   
504-303 9 Kenner LA NWORLAMTXKX  150C VOICESTREAM GSM I, LLC 490   2008-02-27   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.