Bharat Sanchar Nigam Limited (abbreviated BSNL) is an Indian company headquartered in Delhi, India. It was incorporated on 15 September 2000 and took over the business of providing of telecom services and network management from the erstwhile Central Government Departments of Telecom Services (DTS) and Telecom Operations (DTO), with effect from 1 October 2000 on a going concern basis. It is the largest provider of telephone , largest services provider with more than 60% Market share, and fifth largest provider in India. However, in recent years the company's revenues and market share have plummeted into heavy losses due to intense competition in the Indian telecommunications sector.
BSNL is India's oldest and largest communication service provider (CSP). It had a customer base of 12 crores as of June 2015.
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