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: 590

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-590 A Westfield TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-590 0 Westfield TX   004F BANDWIDTH.COM CLEC, LLC - TX 560   2022-12-05   
346-590 1 Westfield TX   903C ONVOY, LLC - TX 560   2022-12-15   
346-590 2 Westfield TX   903C ONVOY, LLC - TX 560   2022-12-15   
346-590 3 Westfield TX   903C ONVOY, LLC - TX 560   2023-06-19   
346-590 4 Westfield TX   318J COMCAST IP PHONE, LLC 560   2022-11-03   
346-590 5 Westfield TX   903C ONVOY, LLC - TX 560   2023-05-13   
346-590 6 Westfield TX   903C ONVOY, LLC - TX 560   2023-08-12   
346-590 7 Westfield TX   903C ONVOY, LLC - TX 560   2023-06-19   
346-590 8 Westfield TX   903C ONVOY, LLC - TX 560   2023-06-19   
346-590 9 Westfield TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2022-12-22   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.