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.
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Switch: SNANTX39TMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-552 2 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2020-09-04   
956-552 3 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2020-09-04   
956-552 4 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2020-11-22   
956-625 8 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2017-10-18   
956-635 A Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566      
956-635 0 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2008-01-10   
956-635 1 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2008-01-31   
956-635 9 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2007-12-13   
956-679 A Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566      
956-679 0 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2022-11-10   
956-679 1 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2022-11-10   
956-679 2 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2022-11-10   
956-701 0 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2013-12-10   
956-754 A Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566      
956-754 0 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2007-02-20   
956-754 9 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2006-11-21   
956-757 0 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2023-11-23   
956-757 1 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2023-11-23   
956-764 0 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2006-06-06   
956-764 9 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2007-05-27   
956-770 A Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2024-11-02   
956-770 0 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2024-11-02   
956-770 1 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2024-11-02   
956-857 4 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2006-02-24   
956-857 7 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2007-09-17   
956-898 1 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2012-03-01   
956-898 2 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2012-11-16   
956-949 0 Laredo TX 6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2007-10-19   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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