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Phone Directory 406-428 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 428-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-428 Grass Range, MT Mid-rivers Telephone Cooperative Fergus Landline 02/04/1994

Other Series For Prefixes

406-4280###
406-4281###
406-4282###
406-4283###
406-4284###
406-4285###
406-4286###
406-4287###
406-4288###
406-4289###