| 1 | N.L.S., Inc. | Kimberling City, MO 65686 | Oil & Gas Operator | Aug 2016 |
| 2 | Nadel And Gussman, L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2024 |
| 3 | National Cooperative RFG Assoc | McPherson, KS 67460-1404 | Oil & Gas Operator | Jun 2006 |
| 4 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 5 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 6 | National Oil Company (Ohio) The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 7 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | Dec 2024 |
| 8 | Natural Gas Compression Corp | Cleveland, OK 74020 | Oil & Gas Operator | Nov 2023 |
| 9 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 10 | Neas Operating | Pampa, TX 79065 | Oil & Gas Operator | Oct 2011 |
| 11 | New London Oil Inc. | Houston, TX 77253 | Oil & Gas Operator | Aug 2002 |
| 12 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
| 13 | Northern Natural Gas Producing | | Gas Operator | Jan 1991 |
| 14 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Oct 2024 |