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: 320

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
979-320 A El Campo TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
979-320 0 El Campo TX   903C ONVOY, LLC - TX 560   2013-01-12   
979-320 1 El Campo TX   073H TELNYX LLC 560   2017-06-16   
979-320 2 El Campo TX   5562 METROPCS, INC. 560   2020-05-14   
979-320 3 El Campo TX   515J IP HORIZON LLC 560   2022-04-01   
979-320 4 El Campo TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-08-24   
979-320 5 El Campo TX   903C ONVOY, LLC - TX 560   2010-11-15   
979-320 6 El Campo TX   004F BANDWIDTH.COM CLEC, LLC - TX 560   2013-04-26   
979-320 7 El Campo TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2008-04-03   
979-320 8 El Campo TX   004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-10-12   
979-320 9 El Campo TX   004F BANDWIDTH.COM CLEC, LLC - TX 560   2009-02-23   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.