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Phone Directory 406-631 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 631-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-631 Elmo, MT Zayo Group LLC Lake Landline 07/26/2007

Other Series For Prefixes

406-6310###
406-6311###
406-6312###
406-6313###
406-6314###
406-6315###
406-6316###
406-6317###
406-6318###
406-6319###