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
832-973 7   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2014-05-12   
832-973 8   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2014-05-12   
832-973 9   6701 AERIAL COMMUNICATIONS, INC. 560   2013-08-02   
832-975 A HSTNTXYADS5  903C ONVOY, LLC - TX 560      
832-975 0   004F BANDWIDTH.COM CLEC, LLC - TX 560   2014-05-12   
832-975 1   004F BANDWIDTH.COM CLEC, LLC - TX 560   2014-05-12   
832-975 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-06-27   
832-975 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-06-27   
832-975 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-06-27   
832-975 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-06-27   
832-975 6   9533 SOUTHWESTERN BELL 560   2014-05-15   
832-975 7   903C ONVOY, LLC - TX 560   2014-04-26   
832-975 8   903C ONVOY, LLC - TX 560   2014-04-26   
832-975 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-06-27   
832-977 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
832-977 0   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-05-11   
832-977 1   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-05-11   
832-977 2   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-05-11   
832-977 3   6701 AERIAL COMMUNICATIONS, INC. 560   2015-01-06   
832-977 4   6701 AERIAL COMMUNICATIONS, INC. 560   2015-01-06   
832-977 5   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-05-08   
832-977 6   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-05-08   
832-977 7   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-05-08   
832-977 8   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-05-08   
832-977 9   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-05-08   
832-978 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 0   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 1   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 2   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 3   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 4   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 5   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 6   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 7   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 8   6701 AERIAL COMMUNICATIONS, INC. 560      
832-978 9   6701 AERIAL COMMUNICATIONS, INC. 560      
832-980 A HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
832-980 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-980 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2013-11-29   
832-981 A HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
832-981 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-06-27   
832-981 1   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-05-16   
832-981 2   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-05-15   
832-981 3   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-05-15   
832-981 4   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-05-15   
832-981 5   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-05-15   
832-981 6   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-05-16   
832-981 7   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-05-16   
832-981 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-06-27   
832-981 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-06-27   
832-982 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
832-982 0   004F BANDWIDTH.COM CLEC, LLC - TX 560   2014-01-13   
832-982 1   004F BANDWIDTH.COM CLEC, LLC - TX 560   2014-01-13   
832-982 2   004F BANDWIDTH.COM CLEC, LLC - TX 560   2014-01-13   
832-982 3   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-01-20   
832-982 4   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-01-20   
832-982 5   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-01-20   
832-982 6   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-01-20   
832-982 7   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-01-20   
832-982 8   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-01-14   
832-982 9   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-01-10   
832-986 A HSTNTX01X7X  516C AT&T CORP. 560      
832-986 0   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-986 1   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-986 2   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-986 3   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-986 4   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-986 5   516C AT&T CORP. 560   2014-03-16   
832-986 6   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-986 7   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-986 8   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-986 9   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2014-04-23   
832-991 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
832-991 0   6701 AERIAL COMMUNICATIONS, INC. 560   2014-08-08   
832-991 1   6701 AERIAL COMMUNICATIONS, INC. 560   2014-08-08   
832-991 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-04-15   
832-991 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-04-15   
832-991 4   9533 SOUTHWESTERN BELL 560   2015-04-15   
832-991 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-04-15   
832-991 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-04-15   
832-991 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-04-15   
832-991 8   318J COMCAST IP PHONE, LLC 560   2014-07-24   
832-991 9   6701 AERIAL COMMUNICATIONS, INC. 560   2013-12-01   
832-992 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
832-992 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-08-01   
832-992 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-08-01   
832-992 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-08-01   
832-992 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-08-01   
832-992 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-08-01   
832-992 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-08-01   
832-992 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-08-01   
832-992 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2014-08-01   

<< 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: ISP Telecom

Like this site? We accept donations via PayPal.