ONGC announced on October 30, 2025, that India Ratings withdrew the IND AAA/Stable credit rating for Rs. 500 Crore Non-Convertible Debentures as the amount was redeemed, and the rating for Rs. 860 Crore unutilized NCD was also withdrawn at the company's request; however, the rating for Rs. 1,000 Crore NCD remains affirmed as IND AAA/Stable.