High Quality Content by WIKIPEDIA articles! Cairn India (NSE - CAIRN, BSE - 532792) is headquartered in Gurgaon, India. It is engaged in the business of oil and gas exploration and production. Cairn India has a total of 10 blocks in three areas namely one block in Rajasthan, three on the west coast of India and six on the east coast of India, including one in Sri Lanka. Of these, eight including the three producing blocks are operated by Cairn India.