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: AUSTTXFADS0

Remotes:

Switch Switch name Switch type
AUSTTXBERS0  Bee Creek  DMH 
AUSTTXCRRS0  Creedmore  RSC 
AUSTTXLWRS0  Lakeway  RSC 
AUSTTXMFRS0  Marshall Ford  RSC 
RCDLTXRDRS1  Rockdale  RSS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-306 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-314 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-327 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-328 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-329 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-330 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-347 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-732 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-741 A Austin TX 9533 SOUTHWESTERN BELL 558      
512-742 A Austin TX 9533 SOUTHWESTERN BELL 558      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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