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.
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OCN: 150C VOICESTREAM GSM I, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
985-346 1 Houma LA NWORLAMTX6Y  490   2004-12-13   
985-346 7 Houma LA NWORLAMTX6Y  490   2014-11-22   
985-347 A Houma LA NWORLAMTX6Y  490      
985-347 0 Houma LA NWORLAMTX6Y  490   2021-12-10   
985-347 1 Houma LA NWORLAMTX6Y  490   2021-12-10   
985-347 2 Houma LA NWORLAMTX6Y  490   2021-12-10   
985-347 3 Houma LA NWORLAMTX6Y  490   2022-03-14   
985-347 4 Houma LA NWORLAMTX6Y  490   2022-03-14   
985-347 5 Houma LA NWORLAMTX6Y  490   2022-03-14   
985-347 9 Houma LA NWORLAMTX6Y  490   2021-12-10   
985-358 1 Covington LA NWORLAMA99Z  490   2024-08-09   
985-358 6 Covington LA NWORLAMA99Z  490   2024-06-19   
985-358 7 Covington LA NWORLAMA99Z  490   2024-06-19   
985-361 A Raceland LA NWORLAMTX6Y  490   2024-02-11   
985-361 0 Raceland LA NWORLAMTX6Y  490   2024-02-11   
985-361 9 Raceland LA NWORLAMTX6Y  490   2024-02-11   
985-362 8 Thibodaux LA NWORLAMTX6Y  490   2024-06-19   
985-362 9 Thibodaux LA NWORLAMTX6Y  490   2024-06-19   
985-363 1 Hammond LA NWORLAMTX6Y  490   2021-06-04   
985-363 2 Hammond LA NWORLAMTX6Y  490   2021-06-04   
985-363 4 Hammond LA NWORLAMTX6Y  490   2021-06-04   
985-363 5 Hammond LA NWORLAMTX6Y  490   2021-06-04   
985-363 6 Hammond LA NWORLAMTX6Y  490   2021-06-04   
985-363 7 Hammond LA NWORLAMTX6Y  490   2021-06-04   
985-366 1 Laplace LA NWORLAMTX6Y  490   2024-06-19   
985-366 3 Laplace LA   490   2026-03-01   
985-366 8 Laplace LA NWORLAMTX6Y  490   2024-06-19   
985-366 9 Laplace LA NWORLAMTX6Y  490   2024-06-19   
985-367 3 Lacombe LA   490   2025-06-21   
985-377 8 Mandeville LA NWORLAMA99Z  490   2011-10-27   
985-381 0 Houma LA NWORLAMTX6Y  490      
985-381 9 Houma LA NWORLAMTX6Y  490      
985-397 A Morgan City LA NWORLAMTX6Y  490      
985-397 0 Morgan City LA NWORLAMTX6Y  490      
985-397 1 Morgan City LA NWORLAMTX6Y  490      
985-397 2 Morgan City LA NWORLAMTX6Y  490      
985-397 3 Morgan City LA NWORLAMTX6Y  490      
985-397 4 Morgan City LA NWORLAMTX6Y  490      
985-397 6 Morgan City LA NWORLAMTX6Y  490      
985-402 6 Hammond LA NWORLAMTX6Y  490   2015-01-15   
985-402 9 Hammond LA NWORLAMTX6Y  490   2015-01-15   
985-403 A Hammond LA NWORLAMTX6Y  490      
985-403 0 Hammond LA NWORLAMTX6Y  490   2022-03-25   
985-403 1 Hammond LA NWORLAMTX6Y  490   2022-03-25   
985-403 2 Hammond LA NWORLAMTX6Y  490   2022-03-25   
985-403 9 Hammond LA NWORLAMTX6Y  490   2022-03-25   
985-412 0 Patterson LA NWORLAMTX6Y  490   2010-08-09   
985-412 1 Patterson LA NWORLAMTX6Y  490   2013-12-16   
985-412 9 Patterson LA NWORLAMTX6Y  490   2013-12-16   
985-422 0 Raceland LA NWORLAMTX6Y  490   2021-05-06   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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