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.

NPA: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 514

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-514 A Austin TX AUSTTXFIDS0  9533 SOUTHWESTERN BELL 558      
512-514 0 Austin TX AUSXTXZR0MD  793K TWC IP ENABLED SERVICES, LLC 558   2006-04-24   
512-514 1 Austin TX AUSXTXZR0MD  793K TWC IP ENABLED SERVICES, LLC 558   2006-03-10   
512-514 2 Austin TX AUSTTXFIDS0  9533 SOUTHWESTERN BELL 558      
512-514 3 Austin TX AUSWTXGXBMD  5562 METROPCS, INC. 558   2007-08-02   
512-514 4 Austin TX AUSWTXGXBMD  5562 METROPCS, INC. 558   2007-08-02   
512-514 5 Austin TX AUSWTXGXBMD  5562 METROPCS, INC. 558   2007-08-02   
512-514 6 Austin TX AUSTTXFIDS0  9533 SOUTHWESTERN BELL 558      
512-514 7 Austin TX AUSTTXFIDS0  9533 SOUTHWESTERN BELL 558      
512-514 8 Austin TX AUSTTXFIDS0  9533 SOUTHWESTERN BELL 558      
512-514 9 Austin TX AUSTTXFIDS0  9533 SOUTHWESTERN BELL 558      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.