MTNL meaning in Navratna Central Public Sector Enterprise ?

Mahanagar Telephone Nigam Limited, d/b/a MTNL, is a wholly owned subsidiary of Bharat Sanchar Nigam Limited headquartered in New Delhi, India. MTNL Provides services in the metro cities of Mumbai and New Delhi in India and in the island nation of Mauritius in Africa. The company had a monopoly in Mumbai and New Delhi until 1992, when the telecom sector was opened to other service providers. "Transparency makes us different" is the motto of the company. The Bharat Sanchar Nigam Limited currently holds 100% stock in the company. The company's shares are listed on Bombay Stock Exchange, Global depository receipts on London Stock Exchange and American depository receipts on New York Stock Exchange. As of June 2021, it has 3.28 million subscribers. It is also a public sector enterprise of Navratna status which is given by Government of India to the best performing state owned companies.