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: HSTNTX01MMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-406 A Houston Suburban TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2024-12-12   
281-562 A Bammel TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-272 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-277 A Satsuma TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-328 A Spring TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-365 A Barker TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-376 A Satsuma TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-378 A Houston Suburban TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-384 A Apollo TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-397 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-405 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-416 A Tomball TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-437 A Houston Suburban TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-451 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-481 A Richmond-Rosenberg TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-609 A Bammel TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-665 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-762 A Richmond-Rosenberg TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-815 A Apollo TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-845 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2024-12-20   
409-356 A Galveston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
713-576 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2024-12-12   
832-780 A Deer Park TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
936-241 A Madisonville TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
936-331 A Conroe TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
936-354 A Huntsville TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
979-347 A Brenham TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      

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

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