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Phone Directory 406-335 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-335 Sweet Grass, MT Northern Telephone Cooperative Toole Landline 02/04/1994

Other Series For Prefixes

406-3350###
406-3351###
406-3352###
406-3353###
406-3354###
406-3355###
406-3356###
406-3357###
406-3358###
406-3359###