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: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-204 A Houston TX HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560      
346-204 0 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-204 1 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-204 2 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-204 3 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-204 4 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-204 5 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-204 6 Houston TX HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560      
346-204 7 Houston TX HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560      
346-204 8 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-204 9 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.