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: 281 [Rate centres in NPA 281] [Dial plan for NPA 281]

NXX: 817

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-817 A Deer Park TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-817 0 Deer Park TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2011-10-11   
281-817 1 Deer Park TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2013-01-04   
281-817 2 Deer Park TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-817 3 Deer Park TX HSTNTX01DS2  7421 AT&T - LOCAL 560   2002-01-18   
281-817 4 Deer Park TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2013-01-04   
281-817 5 Deer Park TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2007-07-09   
281-817 6 Deer Park TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2013-01-04   
281-817 7 Deer Park TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2007-07-09   
281-817 8 Deer Park TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2011-10-11   
281-817 9 Deer Park TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.