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Phone Directory 406-689 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-689 Wisdom, MT Southern Montana Telephone Co. Beaverhead Landline 02/04/1994

Other Series For Prefixes

406-6890###
406-6891###
406-6892###
406-6893###
406-6894###
406-6895###
406-6896###
406-6897###
406-6898###
406-6899###