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: AUSTTXTEDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-977 5 Austin TX 9533 SOUTHWESTERN BELL 558      
512-977 6 Austin TX 9533 SOUTHWESTERN BELL 558      
512-977 7 Austin TX 9533 SOUTHWESTERN BELL 558      
512-977 9 Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 0 Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 1 Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 2 Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 3 Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 4 Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 6 Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 7 Austin TX 9533 SOUTHWESTERN BELL 558      
512-997 9 Austin TX 9533 SOUTHWESTERN BELL 558      

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

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