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: 273

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-273 A Tomball TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-273 0 Tomball TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2017-12-21   
346-273 1 Tomball TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2017-12-21   
346-273 2 Tomball TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2018-04-26   
346-273 3 Tomball TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-08-12   
346-273 4 Tomball TX HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2018-05-14   
346-273 5 Tomball TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-06-09   
346-273 6 Tomball TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-04-14   
346-273 7 Tomball TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-12-23   
346-273 8 Tomball TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-12-23   
346-273 9 Tomball TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-11-18   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.