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: AUSTTXRRDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-218 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-238 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-244 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-246 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-248 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-255 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-283 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-310 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-341 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-388 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-671 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-716 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-733 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-828 A Austin TX 9533 SOUTHWESTERN BELL 558      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.