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: BTRGLAGWXVZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
225-393 A Tunica LA 515J IP HORIZON LLC 492   2024-05-19   
225-409 A Baton Rouge LA 515J IP HORIZON LLC 492      
225-528 A Lutcher LA 515J IP HORIZON LLC 492   2024-05-20   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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