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.

Brownsville, TX

<< 1 2 3 4 5 6 7 8 9 10 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
956-838 4 BWVLTXTERS0  9533 SOUTHWESTERN BELL 568      
956-838 5 BWVLTXTERS0  9533 SOUTHWESTERN BELL 568      
956-838 6 BWVLTXTERS0  9533 SOUTHWESTERN BELL 568      
956-838 7 BWVLTXTERS0  9533 SOUTHWESTERN BELL 568      
956-838 8 BWVLTXTERS0  9533 SOUTHWESTERN BELL 568      
956-838 9 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2014-12-01   
956-839 A   4290 STPCS JOINT VENTURE, LLC 568   2025-11-17   
956-839 5   4290 STPCS JOINT VENTURE, LLC 568   2025-11-17   
956-839 6   4290 STPCS JOINT VENTURE, LLC 568   2025-11-17   
956-839 7   4290 STPCS JOINT VENTURE, LLC 568   2025-11-17   
956-839 8   4290 STPCS JOINT VENTURE, LLC 568   2025-11-17   
956-839 9   4290 STPCS JOINT VENTURE, LLC 568   2025-11-17   
956-840 A HRLNTXHGXXX  318J COMCAST IP PHONE, LLC 568      
956-840 0 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2023-07-11   
956-840 1 HRLNTXHGXXX  318J COMCAST IP PHONE, LLC 568   2023-07-10   
956-840 2 HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-07-11   
956-840 3 HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-07-11   
956-840 4 HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-07-11   
956-840 5 HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-08-14   
956-840 6 HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2023-12-10   
956-840 7 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2023-07-11   
956-840 8 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2023-07-11   
956-840 9 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2023-07-11   
956-846 A   4290 STPCS JOINT VENTURE, LLC 568   2025-10-03   
956-846 0   4290 STPCS JOINT VENTURE, LLC 568   2025-10-06   
956-846 1   4290 STPCS JOINT VENTURE, LLC 568   2025-10-06   
956-846 2   4290 STPCS JOINT VENTURE, LLC 568   2025-10-06   
956-846 3   4290 STPCS JOINT VENTURE, LLC 568   2025-10-06   
956-846 4   4290 STPCS JOINT VENTURE, LLC 568   2025-10-06   
956-846 5   4290 STPCS JOINT VENTURE, LLC 568   2025-10-03   
956-846 6   4290 STPCS JOINT VENTURE, LLC 568   2025-10-03   
956-846 7   4290 STPCS JOINT VENTURE, LLC 568   2025-10-03   
956-846 8   4290 STPCS JOINT VENTURE, LLC 568   2025-10-03   
956-846 9   4290 STPCS JOINT VENTURE, LLC 568   2025-10-03   
956-866 A HRLNTXHGXNX  965H FRACTEL, LLC 568      
956-866 0 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2022-02-13   
956-866 1 HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-11-13   
956-866 2 SNANTXCA88Z  516J TON80 COMMUNICATIONS, LLC 568   2021-06-25   
956-866 3 HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-11-13   
956-866 4 HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-11-13   
956-866 5 HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-06-24   
956-866 6 HRLNTXHGXNX  965H FRACTEL, LLC 568   2021-03-15   
956-866 7 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2022-07-25   
956-866 8 HRLNTXATTMD  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 568   2021-03-16   
956-866 9 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2022-02-13   
956-882 A BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-882 0 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 1 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 2 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 3 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 4 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 5 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 6 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 7 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 8 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-882 9 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568   2004-12-17   
956-908 A HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-908 0 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-08-16   
956-908 1 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2008-08-16   
956-908 2 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-08-18   
956-908 3 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-08-18   
956-908 4 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-08-18   
956-908 5 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-08-18   
956-908 6 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-08-18   
956-908 7 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-07-23   
956-908 8 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-07-23   
956-908 9 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-07-23   
956-909 A HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-909 0 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 1 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 2 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 3 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 4 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 5 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 6 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 7 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 8 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-909 9 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2007-11-02   
956-954 A HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2024-11-15   
956-954 0 HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568   2024-11-16   
956-954 1 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-06-03   
956-954 2 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-06-03   
956-954 3 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-06-03   
956-954 4 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-06-27   
956-954 5 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-06-27   
956-954 6 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2024-11-16   
956-954 7 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2024-11-16   
956-954 8 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2024-11-16   
956-954 9 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2024-11-15   
956-982 A BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-983 A BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-983 0 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2011-02-04   
956-983 1 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-983 2 HRLNTXKX8MD  5562 METROPCS, INC. 568   2013-06-14   
956-983 3 HRLNTXHGFMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 568   2019-01-23   
956-983 4 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-983 5 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-983 6 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-983 7 BWVLTXLIDS0  9533 SOUTHWESTERN BELL 568      
956-983 8 HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2019-10-06   

<< 1 2 3 4 5 6 7 8 9 10 >>

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.