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: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-677 A Baytown TX HSTNTXJAXBY  965H FRACTEL, LLC 560      
346-677 0 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-677 1 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-677 2 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-677 3 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-677 4 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-677 5 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-677 6 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-677 7 Baytown TX HSTNTXJAXBY  965H FRACTEL, LLC 560      
346-677 8 Baytown TX HSTNTXJAXGY  516J TON80 COMMUNICATIONS, LLC 560      
346-677 9 Baytown TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.