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Phone Directory 406-630 Detail

State Major City Time Zone
Montana Billings Mountain

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-630 Sidney, MT Level 3 Communications Richland Landline 02/16/2005

Other Series For Prefixes

406-6300###
406-6301###
406-6302###
406-6303###
406-6304###
406-6305###
406-6306###
406-6307###
406-6308###
406-6309###