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: 979 [Rate centres in NPA 979] [Dial plan for NPA 979]

NXX: 493

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
979-493 A Columbus TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
979-493 0 Columbus TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2014-05-16   
979-493 1 Columbus TX   515J IP HORIZON LLC 560   2022-04-02   
979-493 2 Columbus TX HSTDTXBGBMD  5562 METROPCS, INC. 560   2022-09-19   
979-493 3 Columbus TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2021-03-18   
979-493 4 Columbus TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2021-03-18   
979-493 5 Columbus TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2013-01-12   
979-493 6 Columbus TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-10-12   
979-493 7 Columbus TX HSTNTX01MMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2009-07-03   
979-493 8 Columbus TX HSTNTXYAOMD  515J IP HORIZON LLC 560   2023-12-28   
979-493 9 Columbus TX HSTQTXRG6MD  139F WORLDCALL INTERCONNECT INC. 560   2008-09-12   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.