Reliable internet access. Real world connectivity. Homegrown commitment. Mainstream Fiber Networks is a locally owned and operated fiber optic internet provider located in Nashville, IN. We are dedicated to providing high speed connectivity to the rural areas of southern Indiana. Our team works to deliver fiber optic infrastructure to areas that would otherwise not have access to reliable internet access. Our mission is to provide customers and communities with affordable, reliable fiber optic service solutions and superior customer care. We will work to educate communities about the benefits and value of high speed internet. We will continually invest in partner communities to grow cohesively with the direction of the modern age.