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.

Harlingen, TX

<< 1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
956-291 9   9533 SOUTHWESTERN BELL 568      
956-300 A HRLNTXHGX1X  903C ONVOY, LLC - TX 568      
956-320 A HRLNTXHGMMD  004F BANDWIDTH.COM CLEC, LLC - TX 568      
956-320 0   004F BANDWIDTH.COM CLEC, LLC - TX 568   2008-12-19   
956-320 1   004F BANDWIDTH.COM CLEC, LLC - TX 568   2010-03-07   
956-320 2   004F BANDWIDTH.COM CLEC, LLC - TX 568   2010-06-24   
956-320 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2010-07-08   
956-320 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2010-07-08   
956-320 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2010-07-08   
956-320 6   004F BANDWIDTH.COM CLEC, LLC - TX 568   2010-09-25   
956-320 7   004F BANDWIDTH.COM CLEC, LLC - TX 568   2010-10-24   
956-320 8   004F BANDWIDTH.COM CLEC, LLC - TX 568   2010-10-29   
956-320 9   004F BANDWIDTH.COM CLEC, LLC - TX 568   2010-10-29   
956-335 A HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568      
956-335 0   004F BANDWIDTH.COM CLEC, LLC - TX 568   2012-11-19   
956-335 1   4290 STPCS JOINT VENTURE, LLC 568   2020-09-05   
956-335 2   004F BANDWIDTH.COM CLEC, LLC - TX 568   2012-11-19   
956-335 3   004F BANDWIDTH.COM CLEC, LLC - TX 568   2014-07-25   
956-335 4   004F BANDWIDTH.COM CLEC, LLC - TX 568   2011-06-17   
956-335 5   004F BANDWIDTH.COM CLEC, LLC - TX 568   2014-07-25   
956-335 6   004F BANDWIDTH.COM CLEC, LLC - TX 568   2014-07-25   
956-335 7   4290 STPCS JOINT VENTURE, LLC 568   2013-09-12   
956-335 8   4290 STPCS JOINT VENTURE, LLC 568   2013-09-12   
956-335 9   4290 STPCS JOINT VENTURE, LLC 568   2013-09-12   
956-341 A HRLNTXKX8MD  5562 METROPCS, INC. 568      
956-341 0   004F BANDWIDTH.COM CLEC, LLC - TX 568   2010-10-29   
956-341 1   5562 METROPCS, INC. 568      
956-341 2   5562 METROPCS, INC. 568      
956-341 3   5562 METROPCS, INC. 568      
956-341 4   5562 METROPCS, INC. 568      
956-341 5   5562 METROPCS, INC. 568      
956-341 6   5562 METROPCS, INC. 568      
956-341 7   5562 METROPCS, INC. 568      
956-341 8   5562 METROPCS, INC. 568      
956-341 9   004F BANDWIDTH.COM CLEC, LLC - TX 568   2024-11-02   
956-343 A HRLNTXKX8MD  5562 METROPCS, INC. 568      
956-343 0   5562 METROPCS, INC. 568      
956-343 1   5562 METROPCS, INC. 568      
956-343 2   5562 METROPCS, INC. 568      
956-343 3   5562 METROPCS, INC. 568      
956-343 4   5562 METROPCS, INC. 568      
956-343 5   5562 METROPCS, INC. 568      
956-343 6   5562 METROPCS, INC. 568      
956-343 7   5562 METROPCS, INC. 568      
956-343 8   5562 METROPCS, INC. 568      
956-343 9   4290 STPCS JOINT VENTURE, LLC 568      
956-345 A HRLNTXKX8MD  5562 METROPCS, INC. 568      
956-345 0   5562 METROPCS, INC. 568      
956-345 1   5562 METROPCS, INC. 568      
956-345 3   5562 METROPCS, INC. 568      
956-345 4   5562 METROPCS, INC. 568      
956-345 5   5562 METROPCS, INC. 568      
956-345 6   5562 METROPCS, INC. 568      
956-345 7   5562 METROPCS, INC. 568      
956-345 8   5562 METROPCS, INC. 568      
956-345 9   4290 STPCS JOINT VENTURE, LLC 568      
956-357 A HRLNTXHGXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568      
956-364 A HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-364 0   9533 SOUTHWESTERN BELL 568      
956-364 1   9533 SOUTHWESTERN BELL 568      
956-364 2   9533 SOUTHWESTERN BELL 568      
956-364 3   9533 SOUTHWESTERN BELL 568      
956-364 4   9533 SOUTHWESTERN BELL 568      
956-364 5   9533 SOUTHWESTERN BELL 568      
956-364 6   9533 SOUTHWESTERN BELL 568      
956-364 7   9533 SOUTHWESTERN BELL 568      
956-364 8   9533 SOUTHWESTERN BELL 568      
956-364 9   004F BANDWIDTH.COM CLEC, LLC - TX 568   2011-03-20   
956-365 A HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-365 0   9533 SOUTHWESTERN BELL 568      
956-365 1   9533 SOUTHWESTERN BELL 568      
956-365 2   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568   2014-05-03   
956-365 3   9533 SOUTHWESTERN BELL 568      
956-365 4   9533 SOUTHWESTERN BELL 568      
956-365 5   9533 SOUTHWESTERN BELL 568      
956-365 6   9533 SOUTHWESTERN BELL 568      
956-365 7   9533 SOUTHWESTERN BELL 568      
956-365 8   9533 SOUTHWESTERN BELL 568      
956-365 9   004F BANDWIDTH.COM CLEC, LLC - TX 568   2011-04-17   
956-366 A HRLNTXHGDS0  9533 SOUTHWESTERN BELL 568      
956-366 0   5562 METROPCS, INC. 568   2013-11-15   
956-366 1   9533 SOUTHWESTERN BELL 568      
956-366 2   9533 SOUTHWESTERN BELL 568      
956-366 3   9533 SOUTHWESTERN BELL 568      
956-366 4   9533 SOUTHWESTERN BELL 568      
956-366 5   9533 SOUTHWESTERN BELL 568      
956-366 6   9533 SOUTHWESTERN BELL 568      
956-366 7   9533 SOUTHWESTERN BELL 568      
956-366 8   9533 SOUTHWESTERN BELL 568      
956-366 9   004F BANDWIDTH.COM CLEC, LLC - TX 568   2021-11-25   
956-367 A HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-367 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-367 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-367 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-367 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-367 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-08-22   
956-367 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568      
956-367 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-08-22   
956-367 7   5562 METROPCS, INC. 568   2013-06-15   
956-367 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2014-11-07   

<< 1 2 3 4 5 6 7 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.