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: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-331 A Spring TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
346-331 0 Spring TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-15   
346-331 1 Spring TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-15   
346-331 2 Spring TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2015-08-31   
346-331 3 Spring TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2015-10-17   
346-331 4 Spring TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-12-08   
346-331 5 Spring TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-12-08   
346-331 6 Spring TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2015-12-21   
346-331 7 Spring TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-03   
346-331 8 Spring TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-15   
346-331 9 Spring TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-15   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.