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: AUSTTXTWDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-358 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-358 0 Austin TX 9533 SOUTHWESTERN BELL 558      
512-358 2 Austin TX 9533 SOUTHWESTERN BELL 558      
512-358 3 Austin TX 9533 SOUTHWESTERN BELL 558      
512-358 5 Austin TX 9533 SOUTHWESTERN BELL 558      
512-358 7 Austin TX 9533 SOUTHWESTERN BELL 558      
512-358 8 Austin TX 9533 SOUTHWESTERN BELL 558      
512-891 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-892 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 1 Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 2 Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 3 Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 4 Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 5 Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 6 Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 7 Austin TX 9533 SOUTHWESTERN BELL 558      
512-895 8 Austin TX 9533 SOUTHWESTERN BELL 558      
512-899 A Austin TX 9533 SOUTHWESTERN BELL 558      

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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