TDC Holding A/SorTDC Group(formerlyTele Danmark Communications) is a Danish telecommunications company dating back to 1879. TDC Group is the largest telecommunications company in Denmark. The company's headquarters are located in Copenhagen.
TDC Holding is the holding company of two separate companies which were spun-off from TDC; Nuuday A/S and TDC NET A/S. All consumer related services and brands were placed under Nuuday, and the ownership and maintenance of physical infrastructure of mobile antennas as well as coax and fibre optical lines were placed under TDC NET.
