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Phone Directory 406-431 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 431-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-431 Helena, MT Cellco Partnership DBA Verizon Wireless Lewis And Clark Cell Number 02/04/1994

Other Series For Prefixes

406-4310###
406-4311###
406-4312###
406-4313###
406-4314###
406-4315###
406-4316###
406-4317###
406-4318###
406-4319###