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PHONE NUMBER PREFIXES IN THE 406 AREA CODE

Thousand digits 406-556 Area Code & Prefix

(406) 556-0xxx
(406) 556-1xxx
(406) 556-2xxx
(406) 556-3xxx
(406) 556-4xxx
(406) 556-5xxx
(406) 556-6xxx
(406) 556-7xxx
(406) 556-8xxx
(406) 556-9xxx