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Phone Directory 406-397 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-397 Hingham, MT Triangle Telephone Cooperative Assn. Hill Landline 02/04/1994

Other Series For Prefixes

406-3970###
406-3971###
406-3972###
406-3973###
406-3974###
406-3975###
406-3976###
406-3977###
406-3978###
406-3979###