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: 753

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-753 A Tomball TX HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-753 0 Tomball TX HSTNTX362MD  939H COMMIO, LLC 560      
346-753 1 Tomball TX HSTNTX362MD  939H COMMIO, LLC 560      
346-753 2 Tomball TX HSTNTX362MD  939H COMMIO, LLC 560      
346-753 3 Tomball TX HSTNTX362MD  939H COMMIO, LLC 560      
346-753 4 Tomball TX HSTNTX362MD  939H COMMIO, LLC 560      
346-753 5 Tomball TX HSTNTX362MD  939H COMMIO, LLC 560      
346-753 6 Tomball TX HSTNTX362MD  939H COMMIO, LLC 560      
346-753 7 Tomball TX HSTNTX362MD  939H COMMIO, LLC 560      
346-753 8 Tomball TX   903C ONVOY, LLC - TX 560      
346-753 9 Tomball TX   903C ONVOY, LLC - TX 560      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.