InFiber  InFiber AS is a Norwegian telecommunication company that specialize in provision of dark fiber. The company owns a fiber optic network of more than 2000 route km in the Oslo region in Norway. Until 2011, InFiber was called Hafslund Fibernett and was a part of the Hafslund Group. Hafslund sold the company to the private equity fund EQT V in December 2010 at an enterprise value of NOK 1477 million.