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: HSTNTX01DS5

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-203 A Spring TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
281-549 A Kemah TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
346-252 A Houston Suburban TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
409-359 A Texas City-La Marque TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
713-325 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
713-904 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-214 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-357 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-502 A Spring TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-519 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-649 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-667 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-796 A Houston Suburban TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-839 A Houston TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      

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

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