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: AUSTTXGR55Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
737-378 A Kyle TX 516J TON80 COMMUNICATIONS, LLC 558      
737-678 A Dripping Springs TX 516J TON80 COMMUNICATIONS, LLC 558      
737-742 A Austin TX 516J TON80 COMMUNICATIONS, LLC 558      
737-746 A Bertram TX 516J TON80 COMMUNICATIONS, LLC 558      
737-762 A Smithville TX 516J TON80 COMMUNICATIONS, LLC 558      
737-767 A Lampasas TX 516J TON80 COMMUNICATIONS, LLC 558      
737-825 A Austin TX 516J TON80 COMMUNICATIONS, LLC 558      
737-828 A Kempner TX 516J TON80 COMMUNICATIONS, LLC 558      
737-864 A Taylor TX 516J TON80 COMMUNICATIONS, LLC 558      

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

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