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: AUSTTXPFDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-233 3 Austin TX 9533 SOUTHWESTERN BELL 558   2001-07-05   
512-251 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-252 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-533 8 Austin TX 9533 SOUTHWESTERN BELL 558   2001-03-21   
512-594 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-670 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-670 0 Austin TX 9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 1 Austin TX 9533 SOUTHWESTERN BELL 558   2001-12-21   
512-670 2 Austin TX 9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 3 Austin TX 9533 SOUTHWESTERN BELL 558   2001-12-21   
512-670 4 Austin TX 9533 SOUTHWESTERN BELL 558      
512-670 5 Austin TX 9533 SOUTHWESTERN BELL 558   2000-11-27   
512-670 7 Austin TX 9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 9 Austin TX 9533 SOUTHWESTERN BELL 558      
512-703 9 Austin TX 9533 SOUTHWESTERN BELL 558      
512-989 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-990 A Austin TX 9533 SOUTHWESTERN BELL 558      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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