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: 250

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
979-250 A La Grange TX BRYNTX01TMD  7421 AT&T LOCAL 570      
979-250 0 La Grange TX   6664 SPRINT SPECTRUM L.P. 570   2005-10-10   
979-250 1 La Grange TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 570   2005-10-18   
979-250 2 La Grange TX   6701 AERIAL COMMUNICATIONS 570   2010-08-17   
979-250 3 La Grange TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 570   2007-01-29   
979-250 4 La Grange TX   903C ONVOY, LLC - TX 570   2015-08-19   
979-250 5 La Grange TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 570   2017-09-04   
979-250 6 La Grange TX   903C ONVOY, LLC - TX 570   2021-03-15   
979-250 7 La Grange TX   6701 AERIAL COMMUNICATIONS 570   2014-03-10   
979-250 8 La Grange TX   6701 AERIAL COMMUNICATIONS 570   2014-03-10   
979-250 9 La Grange TX   7421 AT&T LOCAL 570   2004-01-02   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.