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: AUSTTXGR09Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-359 A Lockhart TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-412 A Bastrop TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-509 A Georgetown TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-634 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-871 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-954 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-219 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-229 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-258 A Milano TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-261 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-269 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-272 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-289 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-319 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-401 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      

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

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