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Phone Directory 406-923 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 923-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-923 Great Falls, MT Level 3 Communications Cascade Landline 01/03/2005

Other Series For Prefixes

406-9230###
406-9231###
406-9232###
406-9233###
406-9234###
406-9235###
406-9236###
406-9237###
406-9238###
406-9239###