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Phone Directory 406-540 Detail

State Major City Time Zone
Montana Billings Mountain

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Example: (406) 540-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
406-540 Missoula, MT Zayo Group LLC Missoula Landline 07/22/1999

Other Series For Prefixes

406-5400###
406-5401###
406-5402###
406-5403###
406-5404###
406-5405###
406-5406###
406-5407###
406-5408###
406-5409###