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.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-406 A Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 0 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 1 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 2 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 3 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 4 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 5 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 6 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 7 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 8 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-406 9 Missoula MT 509K LIVEWIRE TELECOM, LLC 648   2025-02-01   
406-900 0 Ennis MT 509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 2 Ennis MT 509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 4 Ennis MT 509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 7 Ennis MT 509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 8 Ennis MT 509K LIVEWIRE TELECOM, LLC 648   2025-03-18   
406-900 9 Ennis MT 509K LIVEWIRE TELECOM, LLC 648   2025-03-18   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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