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.

NPA: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

<< 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-214 6 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2016-02-08   
346-214 7 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2016-02-08   
346-214 8 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2016-02-08   
346-214 9 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2016-02-08   
346-215 A Alvin TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-215 0 Alvin TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-02-22   
346-215 1 Alvin TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-02-22   
346-215 2 Alvin TX HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2015-12-26   
346-215 3 Alvin TX HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS LLC 560   2015-05-19   
346-215 4 Alvin TX HSTNTX01X7X  516C AT&T CORP. 560   2016-09-12   
346-215 5 Alvin TX HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2016-01-31   
346-215 6 Alvin TX HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2016-01-31   
346-215 7 Alvin TX HSTNTXMOX7X  318J COMCAST IP PHONE LLC 560   2015-02-24   
346-215 8 Alvin TX HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2016-01-31   
346-215 9 Alvin TX HSTNTXJAXSX  997G LOCAL ACCESS LLC - TX 560   2015-03-23   
346-216 A Baytown TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
346-216 0 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-12-06   
346-216 1 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-12-06   
346-216 2 Baytown TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-04-21   
346-216 3 Baytown TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2015-03-12   
346-216 4 Baytown TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2015-06-12   
346-216 5 Baytown TX HSTNTXJAXSX  997G LOCAL ACCESS LLC - TX 560   2016-03-28   
346-216 6 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-12-06   
346-216 7 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-12-06   
346-216 8 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-12-06   
346-216 9 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-12-06   
346-217 A Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-217 0 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 1 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 2 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 3 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 4 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 5 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 6 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 7 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 8 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-217 9 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-05-23   
346-218 A Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560      
346-218 0 Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-04-27   
346-218 1 Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-04-27   
346-218 2 Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-04-27   
346-218 3 Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-04-27   
346-218 4 Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-04-27   
346-218 5 Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-04-27   
346-218 6 Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-04-27   
346-218 7 Cypress TX HSTNTX01X7X  516C AT&T CORP. 560   2015-04-28   
346-218 8 Cypress TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2015-04-28   
346-218 9 Cypress TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2015-04-27   
346-219 A Houston Suburban TX HSTNTXMOX7X  318J COMCAST IP PHONE LLC 560   2021-01-12   
346-219 0 Houston Suburban TX HSTNTXMOX7X  318J COMCAST IP PHONE LLC 560   2015-03-28   

<< 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 >>

Last updated: Tue, 24 Jan 2023 03:01:57 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.