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: AUSTTXGRDS7

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-319 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-382 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-526 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-591 A Georgetown TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-602 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-676 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-690 A Leander TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-691 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-829 A Dripping Springs PPCP TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
512-982 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-207 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      
737-223 A Austin TX 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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