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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-657 7 Cypress TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-07-15   
346-657 8 Cypress TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-07-15   
346-657 9 Cypress TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-07-15   
346-658 A Richmond-Rosenberg TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-658 0 Richmond-Rosenberg TX   903C ONVOY, LLC - TX 560   2023-08-26   
346-658 1 Richmond-Rosenberg TX   903C ONVOY, LLC - TX 560   2024-05-15   
346-658 2 Richmond-Rosenberg TX   903C ONVOY, LLC - TX 560   2023-07-17   
346-658 3 Richmond-Rosenberg TX   903C ONVOY, LLC - TX 560   2023-07-17   
346-658 4 Richmond-Rosenberg TX   903C ONVOY, LLC - TX 560   2023-07-17   
346-658 5 Richmond-Rosenberg TX   197D VONAGE AMERICA LLC 560   2024-08-25   
346-658 6 Richmond-Rosenberg TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2024-09-13   
346-658 7 Richmond-Rosenberg TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-08-18   
346-658 8 Richmond-Rosenberg TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-07-15   
346-658 9 Richmond-Rosenberg TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-07-15   
346-659 A Houston Suburban TX HSTNTXJAXZY  598J FIVE9, INC. 560      
346-659 0 Houston Suburban TX   598J FIVE9, INC. 560   2023-07-02   
346-659 1 Houston Suburban TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-08-06   
346-659 2 Houston Suburban TX   903C ONVOY, LLC - TX 560   2023-07-05   
346-659 3 Houston Suburban TX   903C ONVOY, LLC - TX 560   2023-07-05   
346-659 4 Houston Suburban TX   903C ONVOY, LLC - TX 560   2023-07-05   
346-659 5 Houston Suburban TX   903C ONVOY, LLC - TX 560   2023-07-05   
346-659 6 Houston Suburban TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-08-06   
346-659 7 Houston Suburban TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-08-06   
346-659 8 Houston Suburban TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-08-06   
346-659 9 Houston Suburban TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-08-06   
346-660 A Baytown TX BYTWTXXARMD  624H ONVOY SPECTRUM, LLC 560      
346-660 0 Baytown TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2021-08-04   
346-660 1 Baytown TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-11-04   
346-660 2 Baytown TX   903C ONVOY, LLC - TX 560   2021-07-17   
346-660 3 Baytown TX   903C ONVOY, LLC - TX 560   2021-07-17   
346-660 4 Baytown TX   903C ONVOY, LLC - TX 560   2021-07-17   
346-660 5 Baytown TX   903C ONVOY, LLC - TX 560   2021-07-17   
346-660 6 Baytown TX   624H ONVOY SPECTRUM, LLC 560   2021-04-07   
346-660 7 Baytown TX   624H ONVOY SPECTRUM, LLC 560   2021-04-07   
346-660 8 Baytown TX   624H ONVOY SPECTRUM, LLC 560   2021-04-07   
346-660 9 Baytown TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-11-27   
346-661 A Langham Creek TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-661 0 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 1 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 2 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 3 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 4 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 5 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 6 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 7 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 8 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-661 9 Langham Creek TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-07-02   
346-662 A Humble TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-662 0 Humble TX   004F BANDWIDTH.COM CLEC, LLC - TX 560   2023-03-07   
346-662 1 Humble TX   004F BANDWIDTH.COM CLEC, LLC - TX 560   2023-03-07   

<< 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.