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: 4290 STPCS JOINT VENTURE, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
956-472 6 Weslaco TX HRLNTXKX8MD  568      
956-472 7 Weslaco TX HRLNTXKX8MD  568   2004-09-16   
956-472 8 Weslaco TX HRLNTXKX8MD  568      
956-472 9 Weslaco TX HRLNTXKX8MD  568      
956-474 0 Mercedes TX HRLNTXKX8MD  568   2021-02-23   
956-479 2 Brownsville TX HRLNTXKX8MD  568   2025-06-01   
956-479 4 Brownsville TX HRLNTXKX8MD  568   2025-06-01   
956-484 A Brownsville TX HRLNTXKX8MD  568      
956-484 0 Brownsville TX HRLNTXKX8MD  568   2020-03-06   
956-484 1 Brownsville TX HRLNTXKX8MD  568   2020-03-06   
956-484 2 Brownsville TX HRLNTXKX8MD  568   2020-03-06   
956-484 3 Brownsville TX HRLNTXKX8MD  568   2021-03-14   
956-484 5 Brownsville TX HRLNTXKX8MD  568   2021-03-14   
956-484 7 Brownsville TX HRLNTXKX8MD  568   2021-03-14   
956-484 9 Brownsville TX HRLNTXKX8MD  568   2020-03-06   
956-490 6 Harlingen TX HRLNTXKX8MD  568      
956-490 7 Harlingen TX HRLNTXKX8MD  568      
956-490 8 Harlingen TX HRLNTXKX8MD  568      
956-490 9 Harlingen TX HRLNTXKX8MD  568      
956-491 0 Harlingen TX HRLNTXKX8MD  568   2020-09-08   
956-491 1 Harlingen TX HRLNTXKX8MD  568      
956-491 2 Harlingen TX HRLNTXKX8MD  568      
956-491 3 Harlingen TX HRLNTXKX8MD  568      
956-491 8 Harlingen TX HRLNTXKX8MD  568      
956-493 0 Harlingen TX HRLNTXKX8MD  568   2008-01-04   
956-494 0 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-494 2 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-495 0 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-495 2 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-495 5 Harlingen TX HRLNTXKX8MD  568      
956-496 A Harlingen TX HRLNTXKX8MD  568      
956-497 A Harlingen TX HRLNTXKX8MD  568   2024-02-09   
956-497 0 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-497 2 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-498 A Harlingen TX HRLNTXKX8MD  568   2024-02-09   
956-498 0 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-498 2 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-498 8 Harlingen TX HRLNTXKX8MD  568      
956-499 A Harlingen TX HRLNTXKX8MD  568   2024-02-09   
956-499 0 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-499 2 Harlingen TX HRLNTXKX8MD  568   2022-03-01   
956-499 3 Harlingen TX HRLNTXKX8MD  568      
956-499 6 Harlingen TX HRLNTXKX8MD  568      
956-501 A Harlingen TX HRLNTXKX8MD  568      
956-501 1 Harlingen TX HRLNTXKX8MD  568      
956-503 7 Donna TX HRLNTXKX8MD  568   2024-11-25   
956-505 0 Brownsville TX HRLNTXKX8MD  568   2021-03-14   
956-505 1 Brownsville TX HRLNTXKX8MD  568   2021-03-14   
956-505 3 Brownsville TX HRLNTXKX8MD  568   2021-03-14   
956-505 4 Brownsville TX HRLNTXKX8MD  568   2021-03-14   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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