MTN Group Limited, formerly M-Cell, is a South African multinational mobile telecommunications company, operating in many African, European and Asian countries. Its head office is in Johannesburg. As of 30 June 2016, MTN recorded 232.6 million subscribers, making it the eighth largest mobile network operator in the world, and the largest in Africa. Active in over 20 countries, one-third of company revenue come from Nigeria, where it holds about 35% market share.