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   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-04-30   
346-552 0 Alvin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-04-30   
346-552 1 Alvin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-04-30   
346-552 2 Alvin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2022-04-30   
346-552 3 Alvin TX   7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2022-07-08   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.