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]

NXX: 552

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-552 A Alvin TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-552 0 Alvin TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-04-30   
346-552 1 Alvin TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-04-30   
346-552 2 Alvin TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-04-30   
346-552 3 Alvin TX HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2022-07-08   
346-552 4 Alvin TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-09-24   
346-552 5 Alvin TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-09-24   
346-552 6 Alvin TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-09-24   
346-552 7 Alvin TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2022-11-26   
346-552 8 Alvin TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2022-10-31   
346-552 9 Alvin TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2022-10-31   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.