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Phone Directory 406-221 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 221-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-221 Butte, MT AT&T Local Silver Bow Landline 02/13/2003

Other Series For Prefixes

406-2210###
406-2211###
406-2212###
406-2213###
406-2214###
406-2215###
406-2216###
406-2217###
406-2218###
406-2219###