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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-356 A Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 0 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 1 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 2 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 3 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 4 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 5 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 6 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 7 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 8 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   
346-356 9 Houston TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2018-09-13   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.