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: AUSTTXEE7MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-229 A Elgin TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 558      
512-381 A Austin TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 558      
512-678 A Bastrop TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 558      
512-702 A Austin TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 558      
512-735 A Austin TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 558      
512-880 A Bastrop TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 558      
737-931 A Austin TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 558      

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

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