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
956-315 6 McAllen TX HRLNTXKX8MD  568   2023-06-05   
956-315 7 McAllen TX HRLNTXKX8MD  568   2023-06-05   
956-315 8 McAllen TX HRLNTXKX8MD  568   2023-06-05   
956-315 9 McAllen TX HRLNTXKX8MD  568   2022-09-25   
956-319 0 Laredo TX SNANTX91X7Y  566   2005-02-06   
956-319 1 Laredo TX SNANTX91X7Y  566   2007-07-13   
956-319 2 Laredo TX SNANTX91X7Y  566   2007-07-13   
956-319 3 Laredo TX SNANTX91X7Y  566   2007-07-13   
956-319 4 Laredo TX SNANTX91X7Y  566   2005-04-02   
956-319 5 Laredo TX SNANTX91X7Y  566   2005-07-17   
956-319 6 Laredo TX SNANTX91X7Y  566   2005-08-22   
956-319 7 Laredo TX SNANTX91X7Y  566   2005-12-16   
956-319 8 Laredo TX SNANTX91X7Y  566   2005-06-12   
956-321 1 Mission TX HRLNTXKX8MD  568   2007-03-20   
956-321 3 Mission TX HRLNTXKX8MD  568   2015-08-20   
956-321 5 Mission TX HRLNTXKX8MD  568   2015-08-20   
956-321 9 Mission TX HRLNTXKX8MD  568   2007-03-20   
956-324 A Laredo TX SNANTX91X7Y  566      
956-325 0 Pharr TX HRLNTXKX8MD  568   2007-04-16   
956-325 1 Pharr TX HRLNTXKX8MD  568   2007-04-16   
956-325 2 Pharr TX HRLNTXKX8MD  568   2007-04-16   
956-325 3 Pharr TX HRLNTXKX8MD  568   2007-07-06   
956-325 4 Pharr TX HRLNTXKX8MD  568   2007-07-06   
956-325 5 Pharr TX HRLNTXKX8MD  568   2007-07-06   
956-325 6 Pharr TX HRLNTXKX8MD  568   2007-07-06   
956-325 7 Pharr TX HRLNTXKX8MD  568   2007-07-06   
956-325 8 Pharr TX HRLNTXKX8MD  568   2007-04-14   
956-325 9 Pharr TX HRLNTXKX8MD  568   2007-04-14   
956-326 0 Laredo TX SNANTX91X7Y  566   2007-07-31   
956-326 5 Laredo TX SNANTX91X7Y  566   2006-04-06   
956-326 6 Laredo TX SNANTX91X7Y  566   2006-04-06   
956-326 7 Laredo TX SNANTX91X7Y  566   2006-04-06   
956-326 8 Laredo TX SNANTX91X7Y  566   2007-07-31   
956-326 9 Laredo TX SNANTX91X7Y  566   2007-07-31   
956-328 A McAllen TX HRLNTXKX8MD  568      
956-328 4 McAllen TX HRLNTXKX8MD  568   2015-01-04   
956-328 6 McAllen TX HRLNTXKX8MD  568   2007-12-10   
956-328 8 McAllen TX HRLNTXKX8MD  568   2015-01-04   
956-328 9 McAllen TX HRLNTXKX8MD  568   2007-12-10   
956-331 A McAllen TX HRLNTXKX8MD  568      
956-331 9 McAllen TX HRLNTXKX8MD  568   2007-12-10   
956-334 A Laredo TX SNANTX91X7Y  566      
956-334 0 Laredo TX SNANTX91X7Y  566      
956-334 1 Laredo TX SNANTX91X7Y  566      
956-334 2 Laredo TX SNANTX91X7Y  566      
956-334 3 Laredo TX SNANTX91X7Y  566      
956-334 4 Laredo TX SNANTX91X7Y  566      
956-334 5 Laredo TX SNANTX91X7Y  566      
956-334 6 Laredo TX SNANTX91X7Y  566      
956-334 7 Laredo TX SNANTX91X7Y  566      

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

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