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.

OCN: 4290 STPCS JOINT VENTURE, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
956-283 6 Pharr TX HRLNTXKX8MD  568   2004-11-11   
956-284 A Laredo TX SNANTX91X7Y  566      
956-284 3 Laredo TX SNANTX91X7Y  566   2009-05-30   
956-289 0 Edinburg TX HRLNTXKX8MD  568   2004-11-19   
956-289 3 Edinburg TX HRLNTXKX8MD  568   2004-11-19   
956-289 6 Edinburg TX HRLNTXKX8MD  568   2004-07-19   
956-289 9 Edinburg TX HRLNTXKX8MD  568   2004-04-29   
956-292 1 Edinburg TX HRLNTXKX8MD  568   2005-07-14   
956-292 3 Edinburg TX HRLNTXKX8MD  568   2005-03-28   
956-292 4 Edinburg TX HRLNTXKX8MD  568   2006-03-13   
956-292 5 Edinburg TX   568   2005-03-28   
956-292 6 Edinburg TX HRLNTXKX8MD  568   2005-03-05   
956-292 8 Edinburg TX HRLNTXKX8MD  568   2005-07-14   
956-292 9 Edinburg TX HRLNTXKX8MD  568   2006-02-17   
956-293 A Brownsville TX HRLNTXKX8MD  568      
956-293 0 Brownsville TX HRLNTXKX8MD  568   2009-12-06   
956-293 1 Brownsville TX HRLNTXKX8MD  568   2010-08-08   
956-293 2 Brownsville TX HRLNTXKX8MD  568   2014-03-08   
956-293 3 Brownsville TX HRLNTXKX8MD  568   2014-03-08   
956-293 4 Brownsville TX HRLNTXKX8MD  568   2014-03-08   
956-293 5 Brownsville TX HRLNTXKX8MD  568   2014-03-08   
956-293 6 Brownsville TX HRLNTXKX8MD  568   2009-06-15   
956-293 7 Brownsville TX HRLNTXKX8MD  568   2014-03-08   
956-293 8 Brownsville TX HRLNTXKX8MD  568   2014-03-08   
956-293 9 Brownsville TX HRLNTXKX8MD  568   2014-03-08   
956-295 1 Brownsville TX HRLNTXKX8MD  568   2012-06-24   
956-295 4 Brownsville TX HRLNTXKX8MD  568   2012-03-10   
956-295 5 Brownsville TX HRLNTXKX8MD  568   2012-03-10   
956-295 6 Brownsville TX HRLNTXKX8MD  568   2012-11-13   
956-295 7 Brownsville TX HRLNTXKX8MD  568   2011-08-27   
956-295 8 Brownsville TX HRLNTXKX8MD  568   2011-08-27   
956-295 9 Brownsville TX HRLNTXKX8MD  568   2011-08-27   
956-297 5 Roma TX HRLNTXKX8MD  568   2020-09-07   
956-297 8 Roma TX HRLNTXKX8MD  568   2021-10-11   
956-297 9 Roma TX HRLNTXKX8MD  568   2021-10-11   
956-299 A Port Isabel TX HRLNTXKX8MD  568      
956-299 0 Port Isabel TX HRLNTXKX8MD  568      
956-299 1 Port Isabel TX HRLNTXKX8MD  568      
956-299 6 Port Isabel TX HRLNTXKX8MD  568      
956-299 9 Port Isabel TX HRLNTXKX8MD  568      
956-301 A Laredo TX SNANTX91X7Y  566      
956-301 9 Laredo TX SNANTX91X7Y  566   2019-03-10   
956-314 5 Weslaco TX HRLNTXKX8MD  568   2009-05-11   
956-315 A McAllen TX HRLNTXKX8MD  568      
956-315 0 McAllen TX HRLNTXKX8MD  568   2022-09-25   
956-315 1 McAllen TX HRLNTXKX8MD  568   2022-09-25   
956-315 2 McAllen TX HRLNTXKX8MD  568   2022-09-25   
956-315 3 McAllen TX HRLNTXKX8MD  568   2022-09-25   
956-315 4 McAllen TX HRLNTXKX8MD  568   2022-09-25   
956-315 5 McAllen TX HRLNTXKX8MD  568   2023-06-05   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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