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PHONE NUMBER PREFIXES IN THE 406 AREA CODE

Thousand digits 406-623 Area Code & Prefix

(406) 623-0xxx
(406) 623-1xxx
(406) 623-2xxx
(406) 623-3xxx
(406) 623-4xxx
(406) 623-5xxx
(406) 623-6xxx
(406) 623-7xxx
(406) 623-8xxx
(406) 623-9xxx