Sunrise Communications AG (SC AG) is a telecommunication and broadband internet service provider based in Switzerland. SC AG is a subsidiary of TDC A/S. The company is engaged in providing mobile telephony, fixed network, and Internet services for households and business in the areas of direct access, server housing, and e-commerce for businesses. In addition, it also provides customized voice, data, mobile, Internet, infrastructure, and support services to telecommunications service providers, ISPs,

SC AG is active is as a Mobile Virtual Network Operator (MVNO) that operates on Sunrise network, which is based on GSM 900/1800 technology. The company markets its services through a network of point of sale locations in Switzerland, as well as operates an online store that offers phones. The company is headquartered in Zurich, Switzerland.