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Phone Directory 406-943 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-943 Sidney, MT Level 3 Communications Richland Landline 01/09/2003

Other Series For Prefixes

406-9430###
406-9431###
406-9432###
406-9433###
406-9434###
406-9435###
406-9436###
406-9437###
406-9438###
406-9439###