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Phone Directory 406-931 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 931-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-931 Big Timber, MT Cellco Partnership DBA Verizon Wireless Sweet Grass Cell Number 10/11/1997

Other Series For Prefixes

406-9310###
406-9311###
406-9312###
406-9313###
406-9314###
406-9315###
406-9316###
406-9317###
406-9318###
406-9319###