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.

Lasara, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
956-642 A LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-642 0 LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-642 1 LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-642 2 LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-642 3 LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-642 4 LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-642 5 LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-642 6 RMVLTXXB6MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-642 7 RMVLTXXB6MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-642 8 LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-642 9 LASRTXXARS0  2159 VALLEY TEL. COOP., INC. 568      
956-773 A RMVLTXXB6MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-773 4 RMVLTXXB6MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-11-09   
956-773 5 HRLNTXHGXFX  508J CENTURYLINK COMMUNICATIONS, LLC 568   2016-06-08   
956-773 7 RMVLTXXB6MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2015-02-26   
956-773 8 RMVLTXXB6MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2004-11-17   
956-773 9 RMVLTXXB6MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2004-11-17   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.