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
956-439 3 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2022-09-12   
956-439 4 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2022-09-12   
956-439 5 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2022-09-12   
956-439 6 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2022-09-12   
956-439 7 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2022-09-12   
956-439 8 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2022-09-12   
956-439 9 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2022-09-12   
956-440 A Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 0 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 1 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 2 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 3 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 4 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 5 Harlingen TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2019-02-25   
956-440 6 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 7 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 8 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-440 9 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-441 A Laredo TX SNANTXCA44Z  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 566      
956-441 0 Laredo TX SNANTXCA44Z  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 566   2015-11-19   
956-441 1 Laredo TX SNANTXCA44Z  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 566   2015-11-19   
956-441 2 Laredo TX SNANTXCADS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 566   2016-10-15   
956-441 3 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2018-09-15   
956-441 4 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2015-11-20   
956-441 5 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2015-11-20   
956-441 6 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2015-11-20   
956-441 7 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2015-11-20   
956-441 8 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2015-11-20   
956-441 9 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566   2018-09-15   
956-442 A Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568      
956-442 0 Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2014-04-13   
956-442 1 Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2014-04-13   
956-442 2 Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2014-04-13   
956-442 3 Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2014-04-13   
956-442 4 Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2014-04-13   
956-442 5 Brownsville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2014-04-15   
956-442 6 Brownsville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2014-04-15   
956-442 7 Brownsville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2014-04-15   
956-442 8 Brownsville TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2014-04-15   
956-442 9 Brownsville TX HRLNTXKX8MD  5562 METROPCS, INC. 568   2014-04-13   
956-443 A Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-443 0 Brownsville TX HRLNTXHGXYX  793K TWC IP ENABLED SERVICES, LLC 568   2014-08-25   
956-443 1 Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-08-20   
956-443 2 Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-08-20   
956-443 3 Brownsville TX HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2014-10-23   
956-443 4 Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-11-07   
956-443 5 Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-11-07   
956-443 6 Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-11-07   
956-443 7 Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-08-22   
956-443 8 Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-08-08   
956-443 9 Brownsville TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-08-07   
956-444 A Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-444 0 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-444 1 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-444 2 Harlingen TX HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2006-07-07   
956-444 3 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-444 4 Harlingen TX HRLNTXHGXNX  965H FRACTEL, LLC 568   2020-07-12   
956-444 5 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-444 6 Harlingen TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-11-19   
956-444 7 Harlingen TX HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-444 8 Harlingen TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-11-19   
956-444 9 Harlingen TX MCALTX930MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568   2022-12-08   
956-445 A Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-445 0 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2005-08-26   
956-445 1 Mission TX HRLNTXATTMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 568   2019-09-12   
956-445 2 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2005-10-21   
956-445 3 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2006-01-20   
956-445 4 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2006-03-11   
956-445 5 Mission TX HRLNTXHGFMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 568   2007-02-20   
956-445 6 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2006-10-14   
956-445 7 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2007-01-11   
956-445 8 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2007-02-03   
956-445 9 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2005-05-06   
956-446 A Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568      
956-446 0 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2017-05-21   
956-446 1 Sullivan City TX HRLNTXHG8MD  073H TELNYX LLC 568   2021-04-09   
956-446 2 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2020-08-24   
956-446 3 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2020-08-24   
956-446 4 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2022-01-25   
956-446 5 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2021-06-03   
956-446 6 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2021-06-03   
956-446 7 Sullivan City TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-06-24   
956-446 8 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2021-09-24   
956-446 9 Sullivan City TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2021-09-24   
956-447 A Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 0 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 1 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 2 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 3 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 4 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 5 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 6 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 7 Weslaco TX HRLNTXDU7MD  145J TERRA NOVA TELECOM INC. 568   2024-11-15   
956-447 8 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-447 9 Weslaco TX WSLCTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 568      
956-448 A McAllen TX MCALTX936MD  197D VONAGE AMERICA LLC 568      
956-448 0 McAllen TX MCALTX936MD  197D VONAGE AMERICA LLC 568   2018-12-24   
956-448 1 McAllen TX MCALTX936MD  197D VONAGE AMERICA LLC 568   2018-12-24   
956-448 2 McAllen TX MCALTX936MD  197D VONAGE AMERICA LLC 568   2018-12-24   
956-448 3 McAllen TX MCALTX936MD  197D VONAGE AMERICA LLC 568   2018-12-24   

<< 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: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.