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Phone Directory 406-666 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 666-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-666 Saint Xavier, MT Project Telephone Co. Big Horn Landline 02/04/1994

Other Series For Prefixes

406-6660###
406-6661###
406-6662###
406-6663###
406-6664###
406-6665###
406-6666###
406-6667###
406-6668###
406-6669###