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-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
337-538 A Grand Chenier LA CRLYLAXADS1  488      
337-542 A Creole LA CRLYLAXADS1  488      
337-558 A Carlyss LA CRLYLAXADS1  488      
337-569 A Johnsons Bayou LA CRLYLAXADS1  488      
337-583 A Carlyss LA CRLYLAXADS1  488      
337-762 A Hackberry LA CRLYLAXADS1  488      
337-775 A Cameron LA CRLYLAXADS1  488      
409-253 A Nome TX NOMETXXADS0  562      
409-286 A High Island TX HGISTXXADS0  562      

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

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