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: 909

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-909 A Columbia Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-909 0 Columbia Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-909 1 Columbia Falls MT GRFLMTMAHMD  073H TELNYX LLC 648      
406-909 2 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-909 3 Columbia Falls MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648      
406-909 4 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-909 5 Columbia Falls MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-909 6 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-909 7 Columbia Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648      
406-909 8 Columbia Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-909 9 Columbia Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.