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: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-407 A Kalispell MT HLNAMTHUCM1  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648 2010-10-14   
406-407 0 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648 2010-10-14   
406-407 1 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648 2011-02-06   
406-407 2 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648 2011-03-07   
406-407 3 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648 2011-05-05   
406-407 4 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648 2011-07-07   
406-407 5 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648 2011-07-28   
406-407 6 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648 2010-10-26   
406-407 7 Kalispell MT   453F NEUTRAL TANDEM-MONTANA, LLC - MT 648 2011-07-01   
406-407 8 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648 2011-07-08   
406-407 9 Kalispell MT   453F NEUTRAL TANDEM-MONTANA, LLC - MT 648 2012-04-26   

Last updated: Sat, 10 Nov 2018 02:05:23 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.