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Phone Directory 406-435 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-435 Billings, MT One Eighty Communications Yellowstone Landline 08/20/2000

Other Series For Prefixes

406-4350###
406-4351###
406-4352###
406-4353###
406-4354###
406-4355###
406-4356###
406-4357###
406-4358###
406-4359###