Registered Office
Registered Office : `Pandit Deendayal Upadhyaya Urja Bhawan', 5, Nelson Mandela Marg, Vasant Kunj,, New Delhi, Delhi - 110070
Tel: Tel: 011-26752021, 26122148,
Email: secretariat@ongc.co.in,
Website: http://www.ongcindia.com,
Fax: Fax: 011-26129091