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.

NPA: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-740 A Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
956-741 A Mercedes TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568      
956-741 0 Mercedes TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2024-06-07   
956-741 2 Mercedes TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-10-23   
956-741 3 Mercedes TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2024-03-03   
956-741 4 Mercedes TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2024-03-03   
956-742 A Harlingen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-742 0 Harlingen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2006-01-19   
956-742 1 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-07-17   
956-742 2 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-07-17   
956-742 3 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-07-17   
956-742 4 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-07-17   
956-742 5 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-07-17   
956-742 6 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-07-17   
956-742 7 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2009-05-18   
956-742 8 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2009-05-18   
956-742 9 Harlingen TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2006-01-19   
956-743 A Stillman TX RMVLTXXBDS0  2159 VALLEY TEL. COOP., INC. 568      
956-744 A Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
956-745 A Falcon Heights TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568      
956-745 0 Falcon Heights TX HRLNTXHGXPX  515J IP HORIZON LLC 568   2023-12-28   
956-745 1 Falcon Heights TX HRLNTXHGXPX  515J IP HORIZON LLC 568   2023-12-28   
956-745 2 Falcon Heights TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-11-05   
956-746 A Raymondville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-746 0 Raymondville TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-12-04   
956-746 1 Raymondville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-746 2 Raymondville TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-12-04   
956-746 3 Raymondville TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2021-07-24   
956-746 4 Raymondville TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2021-07-24   
956-746 5 Raymondville TX RMVLTXXB6MD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2017-12-21   
956-746 6 Raymondville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-746 7 Raymondville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-746 8 Raymondville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-746 9 Raymondville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-747 A Brownsville TX PHRRTXPHDS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568      
956-747 0 Brownsville TX HRLNTXFPDMD  776A VTX COMMUNICATIONS, LLC 568   2016-07-04   
956-747 1 Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2017-01-06   
956-747 2 Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2017-02-07   
956-747 3 Brownsville TX HRLNTXATYMD  516C AT&T CORP. 568   2016-07-21   
956-747 4 Brownsville TX PHRRTXPHDS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568   2016-06-22   
956-747 5 Brownsville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2023-06-27   
956-747 6 Brownsville TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2023-12-10   
956-747 7 Brownsville TX PHRRTXPHDS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568   2016-06-22   
956-747 8 Brownsville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2023-06-27   
956-747 9 Brownsville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2023-06-27   
956-748 A Rio Hondo TX RHNDTXRHRS0  9533 SOUTHWESTERN BELL 568      
956-748 0 Rio Hondo TX HRLNTXHG8MD  073H TELNYX LLC 568   2021-04-08   
956-748 1 Rio Hondo TX RHNDTXRHRS0  9533 SOUTHWESTERN BELL 568      
956-748 2 Rio Hondo TX RHNDTXRHRS0  9533 SOUTHWESTERN BELL 568      
956-748 3 Rio Hondo TX RHNDTXRHRS0  9533 SOUTHWESTERN BELL 568      
956-748 4 Rio Hondo TX RHNDTXRHRS0  9533 SOUTHWESTERN BELL 568      
956-748 5 Rio Hondo TX HRLNTXHGXYX  793K TWC IP ENABLED SERVICES, LLC 568   2007-05-03   
956-748 6 Rio Hondo TX HRLNTXHGBMD  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568   2005-10-20   
956-748 7 Rio Hondo TX MCALTXHBDS0  4866 SMARTCOM TELEPHONE, LLC 568   2009-10-23   
956-748 8 Rio Hondo TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2024-03-03   
956-748 9 Rio Hondo TX RHNDTXRHRS0  9533 SOUTHWESTERN BELL 568      
956-749 A Laredo TX SNANTXDIRMD  903C ONVOY, LLC - TX 566   2025-02-03   
956-749 0 Laredo TX SNANTXDIRMD  903C ONVOY, LLC - TX 566   2025-02-03   
956-750 A Zapata TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-750 0 Zapata TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-750 1 Zapata TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-750 2 Zapata TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-750 3 Zapata TX HRLNTXHGXYX  793K TWC IP ENABLED SERVICES, LLC 568   2008-01-24   
956-750 4 Zapata TX MCALTX930MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568   2008-10-20   
956-750 5 Zapata TX MCALTX930MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568   2008-10-23   
956-750 6 Zapata TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-11-28   
956-750 7 Zapata TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2009-02-13   
956-750 8 Zapata TX MCALTX930MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568   2008-09-16   
956-750 9 Zapata TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-751 A Zapata TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-751 0 Zapata TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2022-05-05   
956-751 1 Zapata TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2024-03-02   
956-751 8 Zapata TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2023-10-15   
956-751 9 Zapata TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2022-05-05   
956-752 A Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-752 0 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-752 1 Harlingen TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2013-06-14   
956-752 2 Harlingen TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2013-06-14   
956-752 3 Harlingen TX MCALTX930MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568   2010-12-03   
956-752 5 Harlingen TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2015-05-04   
956-752 6 Harlingen TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2015-09-11   
956-752 7 Harlingen TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2015-09-11   
956-752 8 Harlingen TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2015-09-11   
956-752 9 Harlingen TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2015-09-11   
956-753 A Laredo TX LARDTXLADS0  9533 SOUTHWESTERN BELL 566      
956-754 A Laredo TX SNANTX39TMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566      
956-754 0 Laredo TX SNANTX39TMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2007-02-20   
956-754 1 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-03-04   
956-754 2 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-03-04   
956-754 3 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-03-04   
956-754 4 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-03-04   
956-754 5 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-03-04   
956-754 6 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-03-04   
956-754 7 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-03-04   
956-754 8 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-03-04   
956-754 9 Laredo TX SNANTX39TMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566   2006-11-21   
956-755 A Brownsville TX BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-755 0 Brownsville TX BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-755 1 Brownsville TX MCALTX96HMD  7399 WESTEL, INC. - TX 568   2009-12-14   
956-755 2 Brownsville TX BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.