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: 682

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-682 A Crosby TX BYTWTXXAHMD  903C ONVOY, LLC - TX 560   2024-05-19   
346-682 0 Crosby TX BYTWTXXAHMD  903C ONVOY, LLC - TX 560   2024-05-19   
346-682 1 Crosby TX BYTWTXXAHMD  903C ONVOY, LLC - TX 560   2024-06-22   
346-682 8 Crosby TX   004F BANDWIDTH.COM CLEC, LLC - TX 560   2025-12-11   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.