telephone company in South Dakota

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Mt Rushmore Telephone Co

1st Street 320, 57751 Keystone, United States

Mt. Rushmore Telephone Company. Providing telephone and high-speed internet service to customers in the surrounding Keystone, Hermosa area.

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North Louise Avenue 1701, 57107 Sioux Falls, United States

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South Western Avenue 3809, 57105 Sioux Falls, United States

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West 10th Street 737, 57104 Sioux Falls, United States

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2900 W 10th St, 57104 Sioux Falls, United States

SDN is the biggest fiber optic network in the region and is made up of its 17 owner companies: South Dakota’s independent telephone companies.