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Phone Directory 406-389 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-389 Helena, MT Centurylink Communications LLC Lewis And Clark Landline 09/18/2013

Other Series For Prefixes

406-3890###
406-3891###
406-3892###
406-3893###
406-3894###
406-3895###
406-3896###
406-3897###
406-3898###
406-3899###