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: 634

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-634 A Austin TX AUSTTXGRDS4  7421 AT&T - LOCAL 558      
512-634 0 Austin TX AUSTTXGRDS4  7421 AT&T - LOCAL 558      
512-634 1 Austin TX AUSTTXGRDS4  7421 AT&T - LOCAL 558      
512-634 2 Austin TX AUSTTXGRDS4  7421 AT&T - LOCAL 558      
512-634 3 Austin TX AUSTTXGRDS4  7421 AT&T - LOCAL 558      
512-634 4 Austin TX AUSTTXGRDS4  7421 AT&T - LOCAL 558      
512-634 5 Austin TX AUSTTXGRDS4  7421 AT&T - LOCAL 558      
512-634 6 Austin TX AUSWTXGX0MD  5562 METROPCS, INC. 558   2005-07-02   
512-634 7 Austin TX AUSWTXGX0MD  5562 METROPCS, INC. 558   2005-07-02   
512-634 8 Austin TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2007-11-07   
512-634 9 Austin TX AUSTTXGRDS4  7421 AT&T - LOCAL 558      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.