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: 572

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-572 A Bertram TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
512-572 0 Bertram TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558   2014-07-27   
512-572 1 Bertram TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558   2015-07-23   
512-572 2 Bertram TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558   2017-05-27   
512-572 3 Bertram TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2016-04-18   
512-572 4 Bertram TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2016-04-18   
512-572 5 Bertram TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2017-06-25   
512-572 6 Bertram TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558   2018-04-07   
512-572 7 Bertram TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2014-12-03   
512-572 8 Bertram TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2014-07-20   
512-572 9 Bertram TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2018-03-23   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.