Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

NXX: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-556 A Houston TX HSTNTXPB6MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
346-556 0 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2023-11-12   
346-556 1 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2023-11-12   
346-556 2 Houston TX HSTNTXPB6MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560   2022-07-24   
346-556 3 Houston TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-11-12   
346-556 4 Houston TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-11-12   
346-556 5 Houston TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-11-12   
346-556 6 Houston TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-11-12   
346-556 7 Houston TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-11-12   
346-556 8 Houston TX HSTNTXPB6MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560   2022-07-24   
346-556 9 Houston TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-11-12   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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