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.

Houston, TX

<< 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 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
832-320 7   903C ONVOY, LLC - TX 560      
832-320 8   903C ONVOY, LLC - TX 560      
832-320 9   903C ONVOY, LLC - TX 560      
832-322 A HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
832-322 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-322 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-325 A HSTNTX01DS5  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 0   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 1   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 2   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 3   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 4   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 5   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 6   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 7   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-325 8   6701 AERIAL COMMUNICATIONS, INC. 560   2006-02-10   
832-325 9   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
832-329 A HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
832-329 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-329 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-22   
832-330 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
832-330 0   6701 AERIAL COMMUNICATIONS, INC. 560   2005-06-12   
832-330 1   6701 AERIAL COMMUNICATIONS, INC. 560   2005-06-12   
832-330 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-09-25   
832-330 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-09-25   
832-330 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-09-25   
832-330 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-09-25   
832-330 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-09-25   
832-330 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-09-25   
832-330 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-09-25   
832-330 9   6701 AERIAL COMMUNICATIONS, INC. 560   2005-06-12   
832-331 A HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
832-331 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-10   
832-331 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-04-25   
832-332 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 0   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 1   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 2   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 3   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 4   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 5   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 6   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 7   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 8   6701 AERIAL COMMUNICATIONS, INC. 560      
832-332 9   6701 AERIAL COMMUNICATIONS, INC. 560      
832-333 A   903C ONVOY, LLC - TX 560      
832-333 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-10-20   
832-333 1   903C ONVOY, LLC - TX 560      
832-333 2   903C ONVOY, LLC - TX 560      
832-333 3   903C ONVOY, LLC - TX 560      
832-333 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-10-20   
832-333 5   903C ONVOY, LLC - TX 560      
832-333 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-10-20   
832-333 7   903C ONVOY, LLC - TX 560      
832-333 8   903C ONVOY, LLC - TX 560      
832-333 9   903C ONVOY, LLC - TX 560      
832-335 A HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
832-335 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-07-08   
832-335 1   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-335 2   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-335 3   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-335 4   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-335 5   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-335 6   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-335 7   6701 AERIAL COMMUNICATIONS, INC. 560   2005-07-28   
832-335 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-05-09   
832-335 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-05-09   
832-338 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
832-338 0   6701 AERIAL COMMUNICATIONS, INC. 560      
832-338 1   6701 AERIAL COMMUNICATIONS, INC. 560      
832-338 2   6701 AERIAL COMMUNICATIONS, INC. 560      
832-338 3   6701 AERIAL COMMUNICATIONS, INC. 560      
832-338 4   6701 AERIAL COMMUNICATIONS, INC. 560      
832-338 5   6701 AERIAL COMMUNICATIONS, INC. 560      
832-338 6   6701 AERIAL COMMUNICATIONS, INC. 560      
832-338 7   6701 AERIAL COMMUNICATIONS, INC. 560      

<< 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 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 >>

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.