8. Bharti Airtel

Founded: 1995

Country: India

Employees: 20,892

Sales: $14bn

Bharti Airtel is India's top mobile phone company by revenue and subscribers. The company operates in three chief business segments: mobile services, telemedia services and enterprise services. It has one of strongest balance sheet in telecom sector of India. But the lower average revenue per user (ARPU) continues to haunt the company.

In the previous quarter, the company's total revenues were up by 14 per cent to Rs 19,350 crore in the quarter from Rs 16,975 crore in the first quarter. Markedly it showed a growth of 31.5 per cent in Africa and 44.2 per cent jump in mobile data revenues from India.

7. NHN

Founded: 1998

Country: South Korea

Employees: 2,623

Sales: $1.8bn

NHN Corporation runs South Korea's most widely used Web portal, Naver. The company also operates hangame.co.jp, naver.jp and ijji.com which target users from Japan and the United States. In January 2011, the company established a new wholly-owned subsidiary.