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PHONE NUMBER PREFIXES IN THE 406 AREA CODE

Thousand digits 406-840 Area Code & Prefix

(406) 840-0xxx
(406) 840-1xxx
(406) 840-2xxx
(406) 840-3xxx
(406) 840-4xxx
(406) 840-5xxx
(406) 840-6xxx
(406) 840-7xxx
(406) 840-8xxx
(406) 840-9xxx