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: 670

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-670 A Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558      
512-670 0 Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 1 Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558   2001-12-21   
512-670 2 Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 3 Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558   2001-12-21   
512-670 4 Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558      
512-670 5 Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558   2000-11-27   
512-670 6 Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2006-06-23   
512-670 7 Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 8 Austin TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2007-09-24   
512-670 9 Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.