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Phone Directory 406-443 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 443-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-443 Helena, MT Qwest Corporation Lewis And Clark Landline 02/04/1994

Other Series For Prefixes

406-4430###
406-4431###
406-4432###
406-4433###
406-4434###
406-4435###
406-4436###
406-4437###
406-4438###
406-4439###