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.

Switch: HRLNTXATYMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-254 8 Los Fresnos TX 516C AT&T CORP. 568   2011-09-12   
956-265 8 Zapata TX 516C AT&T CORP. 568   2011-09-12   
956-274 A Donna TX 516C AT&T CORP. 568      
956-274 7 Donna TX 516C AT&T CORP. 568   2010-11-13   
956-294 5 Mercedes TX 516C AT&T CORP. 568   2011-09-12   
956-329 1 Edinburg TX 516C AT&T CORP. 568   2011-09-12   
956-372 A Brownsville TX 516C AT&T CORP. 568      
956-372 1 Brownsville TX 516C AT&T CORP. 568   2006-08-19   
956-395 A Rio Hondo TX 516C AT&T CORP. 568      
956-395 5 Rio Hondo TX 516C AT&T CORP. 568   2011-09-12   
956-396 A Falcon Heights TX 516C AT&T CORP. 568      
956-396 7 Falcon Heights TX 516C AT&T CORP. 568   2012-01-01   
956-485 8 Sullivan City TX 516C AT&T CORP. 568   2011-09-12   
956-529 5 Mission TX 516C AT&T CORP. 568   2011-09-12   
956-567 5 Edcouch TX 516C AT&T CORP. 568   2012-12-07   
956-685 5 Pharr TX 516C AT&T CORP. 568   2011-09-12   
956-734 5 Harlingen TX 516C AT&T CORP. 568   2011-07-01   
956-747 3 Brownsville TX 516C AT&T CORP. 568   2016-07-21   
956-772 8 Port Isabel TX 516C AT&T CORP. 568   2012-12-07   
956-800 5 McAllen TX 516C AT&T CORP. 568   2011-06-07   
956-923 5 San Benito TX 516C AT&T CORP. 568   2012-12-07   
956-996 9 Mission TX 516C AT&T CORP. 568   2016-10-25   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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