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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Switch: HSTNTX362MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-508 A Satsuma TX 939H COMMIO, LLC 560      
346-748 A Bammel TX 939H COMMIO, LLC 560   2024-02-18   
346-750 A Highlands TX 939H COMMIO, LLC 560   2024-02-22   
346-751 A Rosharon TX 939H COMMIO, LLC 560   2024-02-23   
346-752 A Langham Creek TX 939H COMMIO, LLC 560   2024-02-23   
346-753 A Tomball TX 939H COMMIO, LLC 560   2024-02-23   
346-756 A Spring TX 939H COMMIO, LLC 560   2024-02-23   
346-759 A Katy TX 939H COMMIO, LLC 560   2024-02-23   
346-761 A Satsuma TX 939H COMMIO, LLC 560   2024-02-23   
346-867 A Houston TX 939H COMMIO, LLC 560      
936-343 A Batson TX 939H COMMIO, LLC 560   2024-02-22   
936-351 A Devers TX 939H COMMIO, LLC 560      
936-359 A Chireno TX 939H COMMIO, LLC 560      
936-360 A Corrigan TX 939H COMMIO, LLC 560      
936-381 A Madisonville TX 939H COMMIO, LLC 560   2024-02-22   
936-382 A Dayton TX 939H COMMIO, LLC 560   2024-02-23   
936-383 A Corrigan TX 939H COMMIO, LLC 560   2024-02-22   
936-384 A Hardin TX 939H COMMIO, LLC 560   2024-02-23   
936-401 A Livingston TX 939H COMMIO, LLC 560   2024-02-23   
936-895 A Hardin TX 939H COMMIO, LLC 560      
979-346 A Matagorda TX 939H COMMIO, LLC 560      
979-354 A Burton TX 939H COMMIO, LLC 560      
979-363 A Columbus TX 939H COMMIO, LLC 560   2024-02-23   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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