| 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 | Native Gas Company LLC | Edmond, OK 73083-7435 | Oil & Gas Operator | Mar 2015 |
| 4 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 5 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2017 |
| 6 | Nelson Exploration Corporation | Cleveland, OK 74020-5725 | Oil & Gas Operator | Sep 2024 |
| 7 | Nerco Oil & Gas, Inc. | | Oil & Gas Operator | Dec 1996 |
| 8 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
| 9 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Dec 2024 |
| 10 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Dec 2024 |
| 11 | North Lake Resources LLC | Oklahoma City, OK 73132-5182 | Oil & Gas Operator | Sep 2024 |