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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
713-679 1 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-01-19   
713-679 2 HSTNTXORDS0  9533 SOUTHWESTERN BELL 560      
713-679 3 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2005-01-08   
713-679 4 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2005-01-08   
713-679 5 HSTNTXORDS0  9533 SOUTHWESTERN BELL 560      
713-679 6 HSTNTXORDS0  9533 SOUTHWESTERN BELL 560      
713-679 7 HSTNTXORDS0  9533 SOUTHWESTERN BELL 560      
713-679 8 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-03-22   
713-679 9 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2005-01-08   
713-680 A HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-681 A HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 A HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 0 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 1 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 2 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 3 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 4 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 5 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 6 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 7 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 8 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-682 9 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2021-08-01   
713-683 A HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-684 A HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-684 0 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-684 1 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-684 2 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2020-09-18   
713-684 3 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2020-09-18   
713-684 4 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-684 5 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-684 6 HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-684 7 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2020-09-18   
713-684 8 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2020-09-18   
713-684 9 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2020-10-26   
713-685 A HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-686 A HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-687 A SGLDTXAQ0MD  6630 USA MOBILITY WIRELESS, INC. 560      
713-688 A HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-689 A HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-689 0 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-01-05   
713-689 1 HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-689 2 HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-689 3 HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-689 4 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-01-19   
713-689 5 HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-689 6 HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-689 7 HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-689 8 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-01-19   
713-689 9 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-03-22   
713-690 A HSTNTXFADS0  9533 SOUTHWESTERN BELL 560      
713-691 A HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 0 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 1 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 2 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 3 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 4 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 5 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 6 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 7 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 8 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-691 9 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2017-08-11   
713-692 A HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-693 A HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-694 A HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-695 A HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 A HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 0 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 1 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 2 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 3 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 4 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 5 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 6 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 7 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 8 HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-696 9 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2020-04-16   
713-697 A HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-698 A SGLDTXAQ0MD  6630 USA MOBILITY WIRELESS, INC. 560      
713-699 A HSTNTXOXDS0  9533 SOUTHWESTERN BELL 560      
713-701 A HSTNTXRIDS0  9533 SOUTHWESTERN BELL 560      
713-701 0 HSTNTXRIDS0  9533 SOUTHWESTERN BELL 560      
713-701 1 HSTNTXGI1MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-10-29   
713-701 2 HSTNTXRIDS0  9533 SOUTHWESTERN BELL 560      
713-701 3 HSTNTXRIDS0  9533 SOUTHWESTERN BELL 560      
713-701 4 HSTNTXMODS0  9533 SOUTHWESTERN BELL 560      
713-701 5 HSTNTXGI1MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-10-29   
713-701 6 HSTNTXFADS0  9533 SOUTHWESTERN BELL 560      
713-701 7 HSTNTXGI1MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-10-29   
713-701 8 HSTNTXMODS0  9533 SOUTHWESTERN BELL 560      
713-701 9 HSTNTXGI1MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-10-29   
713-702 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
713-703 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
713-704 A HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560      
713-705 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
713-706 A HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-707 A SGLDTXAQ0MD  6630 USA MOBILITY WIRELESS, INC. 560      
713-708 A SGLDTXAQ0MD  6630 USA MOBILITY WIRELESS, INC. 560      
713-709 A SGLDTXAQ0MD  6630 USA MOBILITY WIRELESS, INC. 560      
713-710 A SGLDTXAQ0MD  6630 USA MOBILITY WIRELESS, INC. 560      
713-712 A SGLDTXAQ0MD  6630 USA MOBILITY WIRELESS, 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 >>

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.