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: 457

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-457 A Katy TX HSTNTXYAPMD  495J STRATUS NETWORKS 560      
346-457 0 Katy TX HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 1 Katy TX HSTNTXYAPMD  495J STRATUS NETWORKS 560   2021-05-07   
346-457 2 Katy TX HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 3 Katy TX HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 4 Katy TX HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 5 Katy TX HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 6 Katy TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2022-01-22   
346-457 7 Katy TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2021-08-30   
346-457 8 Katy TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-06   
346-457 9 Katy TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-06   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.