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Phone Directory 406-638 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-638 Crow Agency, MT Project Telephone Co. Big Horn Landline 02/04/1994

Other Series For Prefixes

406-6380###
406-6381###
406-6382###
406-6383###
406-6384###
406-6385###
406-6386###
406-6387###
406-6388###
406-6389###