| 1 | National Cooperative RFG Assoc | McPherson, KS 67460-1404 | Oil & Gas Operator | Jun 2006 |
| 2 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 3 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 4 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 5 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Mar 2025 |
| 6 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Nov 2024 |
| 7 | Nelson Exploration Corporation | Cleveland, OK 74020-5725 | Oil & Gas Operator | Dec 2024 |
| 8 | Nextera Energy Power Marketing LLC | Juno Beach, FL 33408 | Oil & Gas Operator | Dec 2024 |
| 9 | Nichols, Irl. A. Trust B | Duncan, OK 73534 | Oil & Gas Operator | Sep 2000 |
| 10 | Nielson & Associates Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 11 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Mar 2025 |
| 12 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Mar 2025 |
| 13 | Noco Investment Company Inc | Tulsa, OK 74159-0470 | Oil & Gas Operator | Mar 2005 |
| 14 | North Lake Resources LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Mar 2025 |
| 15 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 16 | Nova Energy Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 17 | NWM Operating Inc | Okeene, OK 73763 | Oil & Gas Operator | Jan 2025 |