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.

Switch: LFYTLAMAXCZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
337-554 A Lafayette LA 515J IP HORIZON LLC 488      
337-690 A Leonville LA 515J IP HORIZON LLC 488   2024-05-27   
337-691 A Port Barre LA 515J IP HORIZON LLC 488   2024-05-27   
337-757 A Carencro LA 515J IP HORIZON LLC 488   2024-05-20   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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