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Phone Directory 406-442 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-442 Helena, MT Qwest Corporation Lewis And Clark Landline 02/04/1994

Other Series For Prefixes

406-4420###
406-4421###
406-4422###
406-4423###
406-4424###
406-4425###
406-4426###
406-4427###
406-4428###
406-4429###