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: AUSTTXGRDS5

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-972 3 Austin TX 9533 SOUTHWESTERN BELL 558      
512-972 4 Austin TX 9533 SOUTHWESTERN BELL 558      
512-972 5 Austin TX 9533 SOUTHWESTERN BELL 558      
512-972 6 Austin TX 9533 SOUTHWESTERN BELL 558      
512-972 7 Austin TX 9533 SOUTHWESTERN BELL 558      
512-972 8 Austin TX 9533 SOUTHWESTERN BELL 558      
512-972 9 Austin TX 9533 SOUTHWESTERN BELL 558      
512-974 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 0 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 1 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 2 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 3 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 4 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 5 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 6 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 7 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 8 Austin TX 9533 SOUTHWESTERN BELL 558      
512-978 9 Austin TX 9533 SOUTHWESTERN BELL 558      
737-471 A Austin TX 9533 SOUTHWESTERN BELL 558      
737-471 7 Austin TX 9533 SOUTHWESTERN BELL 558   2018-04-21   
737-471 8 Austin TX 9533 SOUTHWESTERN BELL 558   2018-04-21   

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

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