Fiber-based Internet Service Provider and registered Telecommunications Company in the State of Oregon. Based in Roseburg, Or ... egon, DFN has constructed a network consisting of over 1,000 miles of Fiber Optics across Douglas, Lane, and Coos Counties. DFN has a point of presence in Central Offices throughout the the 3 counties as well as the Pittock Internet Exchange (Portland, OR), Willamette Internet Exchange (Eugene, OR), and the Equinix Exchange (San Jose). read more