| 1 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 2 | Natural Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jul 1997 |
| 3 | Naumann Oil & Gas, Inc. | Austin, TX 78716 | Oil & Gas Operator | Oct 2025 |
| 4 | Newton Corp.,The | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 5 | Nichols,Edwin S Explorations Inc | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 6 | Nordan Oil & Gas Corporation | Abilene, TX 79604 | Oil & Gas Operator | Feb 2018 |
| 7 | Norman Oil Corporation | Abilene, TX 79608 | Oil & Gas Operator | Mar 2000 |
| 8 | North American Exploration Co. | Abilene, TX 79602 | Oil & Gas Operator | Apr 1998 |
| 9 | North Central Casing Pullers,Inc | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 10 | North Central Oil Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 11 | Nosivad Oil, Inc. | Clyde, TX 79510 | Oil & Gas Operator | Oct 2025 |
| 12 | Novo Exploration Corporation | Hurst, TX 76053 | Oil & Gas Operator | Jun 2020 |
| 13 | Now Development Co., Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2017 |