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
713-534 A HSTNTXGRDS0  9533 SOUTHWESTERN BELL 560      
713-534 0 HSTNTXGRDS0  9533 SOUTHWESTERN BELL 560      
713-534 1 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2006-02-24   
713-534 2 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2004-10-03   
713-534 3 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2004-10-03   
713-534 4 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2004-10-28   
713-534 5 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2004-10-28   
713-534 6 HSTNTXGRDS0  9533 SOUTHWESTERN BELL 560      
713-534 7 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2010-10-03   
713-534 8 HSTNTXGRDS0  9533 SOUTHWESTERN BELL 560      
713-534 9 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2018-11-16   
713-535 A HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 0 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-01-05   
713-535 1 HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 2 HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 3 HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 4 HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 5 HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 6 HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 7 HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 8 HSTNTXJADS0  9533 SOUTHWESTERN BELL 560      
713-535 9 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2006-12-07   
713-536 A HSTNTXSUDS0  9533 SOUTHWESTERN BELL 560      
713-537 A HSTNTXCLDS2  9533 SOUTHWESTERN BELL 560      
713-539 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 0 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 1 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 2 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 3 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 4 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 5 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 6 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 7 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 8 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-539 9 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-540 A HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
713-541 A HSTNTXPRDS0  9533 SOUTHWESTERN BELL 560      
713-542 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
713-543 A HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-543 0 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-02   
713-543 1 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-02   
713-543 2 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-543 3 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-543 4 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-543 5 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-543 6 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-543 7 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-543 8 HSTNTXGI1MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-10-29   
713-543 9 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-544 A HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-545 A HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 0 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-545 1 HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 2 HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 3 HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 4 HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 5 HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 6 HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 7 HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 8 HSTDTXBGBMD  5562 METROPCS, INC. 560      
713-545 9 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-546 A HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-547 A HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-547 0 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-547 1 HSTNTXREDS0  9533 SOUTHWESTERN BELL 560      
713-547 2 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-547 3 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-547 4 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2007-01-12   
713-547 5 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2007-01-12   
713-547 6 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-547 7 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-547 8 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-547 9 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
713-548 A HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-548 0 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-548 1 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-548 2 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-548 3 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2007-05-30   
713-548 4 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2005-12-30   
713-548 5 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-548 6 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2007-05-30   
713-548 7 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2005-02-06   
713-548 8 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-548 9 HSTNTXNADS0  9533 SOUTHWESTERN BELL 560      
713-549 A SGLDTXAQ0MD  6630 USA MOBILITY WIRELESS, INC. 560      
713-550 A HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-550 0 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 1 HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-550 2 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 3 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 4 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 5 HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-550 6 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 7 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 8 HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-550 9 HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-551 A HSTNTXPADS0  9533 SOUTHWESTERN BELL 560      
713-551 0 HSTNTXPADS0  9533 SOUTHWESTERN BELL 560      
713-551 1 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2004-11-25   
713-551 2 HSTNTXPADS0  9533 SOUTHWESTERN BELL 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: VoIP.ms

Like this site? We accept donations via PayPal.