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: 667

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-667 A Katy TX HSTNTXJAXBY  965H FRACTEL LLC 560      
346-667 2 Katy TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-04-18   
346-667 3 Katy TX   318J COMCAST IP PHONE LLC 560   2020-11-07   
346-667 4 Katy TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-04-18   
346-667 5 Katy TX   318J COMCAST IP PHONE LLC 560   2020-11-07   
346-667 6 Katy TX HSTNTXYANMD  506J TWILIO INTERNATIONAL INC 560   2020-10-08   
346-667 7 Katy TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-01-09   
346-667 8 Katy TX HSTNTXJAXBY  965H FRACTEL LLC 560   2020-08-16   
346-667 9 Katy TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-01-09   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.