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: 903 [Rate centres in NPA 903] [Dial plan for NPA 903]

NXX: 636

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-636 A Big Sandy TX BGSNTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 554      
903-636 0 Big Sandy TX PIACTXXADS3  3196 ETEX COMMUNCATIONS, LLC DBA ETEX TELECOM - TX 554   2015-04-30   
903-636 1 Big Sandy TX LGVWTXPLXZX  073H TELNYX LLC 554   2021-03-07   
903-636 3 Big Sandy TX LGVWTXPLX1X  004F BANDWIDTH.COM CLEC, LLC - TX 554   2011-12-11   
903-636 4 Big Sandy TX BGSNTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 554      
903-636 5 Big Sandy TX BGSNTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 554      
903-636 6 Big Sandy TX LGVWTXPLXEX  903C ONVOY, LLC - TX 554   2018-08-25   
903-636 7 Big Sandy TX LGVWTXPLXEX  903C ONVOY, LLC - TX 554   2020-08-27   
903-636 8 Big Sandy TX LGVWTXPLXEX  903C ONVOY, LLC - TX 554   2020-08-27   
903-636 9 Big Sandy TX BGSNTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 554      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.