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: 670

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-670 A Houston Suburban TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-670 0 Houston Suburban TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-670 1 Houston Suburban TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-670 2 Houston Suburban TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-670 3 Houston Suburban TX   6701 AERIAL COMMUNICATIONS, INC. 560      
281-670 4 Houston Suburban TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
281-670 5 Houston Suburban TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
281-670 6 Houston Suburban TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
281-670 7 Houston Suburban TX   903C ONVOY, LLC - TX 560      
281-670 8 Houston Suburban TX   903C ONVOY, LLC - TX 560      
281-670 9 Houston Suburban TX   903C ONVOY, LLC - TX 560      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.