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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
346-238 5 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
346-238 6 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
346-238 7 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
346-238 8 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
346-238 9 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
346-240 A HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-240 0 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-240 1 HSTNTX01X7X  516C AT&T CORP. 560      
346-240 2 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-240 3 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-240 4 HSTNTX01X7X  516C AT&T CORP. 560      
346-240 5 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-240 6 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-240 7 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-240 8 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-240 9 HSTNTX01X7X  516C AT&T CORP. 560      
346-241 A HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-241 0 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-241 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-241 2 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-241 3 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-241 4 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-241 5 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-241 6 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-241 7 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-241 8 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-241 9 HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-247 A HSTNTXSXDS1  8833 LOGIX COMMUNICATIONS CORPORATION - TX 560      
346-247 0 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-247 1 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-247 2 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
346-247 3 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
346-247 4 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-247 5 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-247 6 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-247 7 HSTNTXSXDS1  8833 LOGIX COMMUNICATIONS CORPORATION - TX 560      
346-247 8 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-247 9 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-250 A HSTQTX02EMD  197D VONAGE AMERICA LLC 560      
346-250 0 HSTQTX02EMD  197D VONAGE AMERICA LLC 560      
346-250 1 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-250 2 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-250 3 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-250 4 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-250 5 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-250 6 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-250 7 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-250 8 HSTQTX02EMD  197D VONAGE AMERICA LLC 560      
346-250 9 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-256 A HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 0 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 1 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 2 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 3 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 4 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 5 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 6 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 7 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-256 8   515J IP HORIZON LLC 560      
346-256 9 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-262 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-262 0 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-262 1 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-262 2 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-262 3 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-262 4 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-262 5 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-262 6 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-262 7 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-262 8 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-262 9 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-265 A HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
346-265 0 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-265 1 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-265 2 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
346-265 3 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
346-265 4 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
346-265 5 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
346-265 6 HSTNTXCADS0  9533 SOUTHWESTERN BELL 560      
346-265 7 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-265 8 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-265 9 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-266 A HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-266 0 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-266 1 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-266 2 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
346-266 3 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-266 4 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-266 5 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-266 6 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-266 7 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-266 8 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-266 9 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-267 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-267 0 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-267 1 HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560      
346-267 2 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-267 3 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-267 4 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-267 5 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 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 >>

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.