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: 744

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-744 A Houston Suburban TX HSTNTXJAXBY  965H FRACTEL LLC 560   2021-09-24   
346-744 0 Houston Suburban TX HSTDTXBG5MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2021-09-25   
346-744 1 Houston Suburban TX HSTDTXBG5MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2021-09-25   
346-744 2 Houston Suburban TX HSTDTXBG5MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2021-09-25   
346-744 3 Houston Suburban TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 4 Houston Suburban TX HSTNTXJAXBY  965H FRACTEL LLC 560   2021-09-24   
346-744 5 Houston Suburban TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 6 Houston Suburban TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 7 Houston Suburban TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 8 Houston Suburban TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 9 Houston Suburban TX HSTDTXBG5MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2021-09-25   

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.