| 19901 | Nana Oil & Gas Inc. | | Oil & Gas Operator | Jan 2018 |
| 19902 | Nance Engineering Inc. | Houston, TX 77058 | Oil & Gas Operator | Mar 2002 |
| 19903 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
| 19904 | Nanco Resources, LLC | | Gas Operator | Dec 2021 |
| 19905 | Nancy Oil & Gas Corp | Tulsa, OK 74101 | Oil Operator | Apr 2020 |
| 19906 | Nancy Wilcox E Qualls | Farmington, NM 87410 | Gas Operator | May 2017 |
| 19907 | Nanke Energy LLC | Westminster, CO 80234 | Oil & Gas Operator | Sep 2024 |
| 19908 | Nantze #1 | Atlanta, TX 75551 | Oil Operator | Jul 2024 |
| 19909 | Narbo Farms, LTD. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 19910 | Nard Inc | Buffalo, OK 73834-9737 | Oil Operator | Dec 2005 |
| 19911 | Naro Oil Corporation | Dallas, TX 75230-1986 | Oil & Gas Operator | Nov 2003 |
| 19912 | Nasco Petroleum L.L.C. | | Oil & Gas Operator | Aug 2024 |
| 19913 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Jul 2024 |
| 19914 | Nashville Associates Inc | | Oil & Gas Operator | Dec 2003 |
| 19915 | Nassau Resources Inc | Denver, CO 80222 | Oil & Gas Operator | Mar 2000 |
| 19916 | Nasser Oil & Gas, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 1998 |
| 19917 | Nat. Gas Pipeline Co Of Amer. | | Oil Operator | Dec 2008 |
| 19918 | Nataraja Oil Corporation | Foley, AL 36535 | Oil Operator | Aug 2010 |
| 19919 | Natchez Operating, LLC | | Oil & Gas Operator | Nov 2023 |
| 19920 | Natchez Pipe & Equip. Co., Inc | | Oil Operator | Nov 1981 |
| 19921 | Nathan C. Hale | | Oil & Gas Operator | Jun 2024 |
| 19922 | Nathan Hale Oil Co. | | Oil & Gas Operator | Jun 2024 |
| 19923 | Nathan Petroleum Corp., Yahn & Yahn Inc | Whitesville, NY 14897 | Oil & Gas Operator | Dec 2023 |
| 19924 | Nathan Petroleum Corporation | Rexville, NY 14877 | Oil & Gas Operator | Dec 2023 |
| 19925 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 19926 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 19927 | National Cooperative RFG Assoc | McPherson, KS 67460-1404 | Oil & Gas Operator | Jun 2006 |
| 19928 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 19929 | National Energy Exp Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 2023 |
| 19930 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 19931 | National Exploration Company | | Oil & Gas Operator | Mar 1982 |
| 19932 | National Fuel Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Sep 2024 |
| 19933 | National Fuel Gas Supply Corporation | | Gas Operator | Dec 2010 |
| 19934 | National Investors Group | Warren, OH 44481 | Oil & Gas Operator | Nov 1996 |
| 19935 | National Offshore LP | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 19936 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 19937 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 19938 | National Oil Company (Ohio) The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 19939 | National Onshore LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 19940 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 19941 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 19942 | National Pride Operating | Parker, CO 80134 | Oil & Gas Operator | Dec 2017 |
| 19943 | National Treasure Mines | San Marina, CA 91118 | Oil Operator | Dec 1998 |
| 19944 | Native Exploration Operating LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Sep 2024 |
| 19945 | Native Gas Company LLC | Edmond, OK 73083-7435 | Oil & Gas Operator | Mar 2015 |
| 19946 | Nativity Of Our Lord | Orchard Park, NY 14127 | Gas Operator | Dec 2023 |
| 19947 | Natl Fuel Gas Supply Corp | Williamsville, NY 14221-5887 | Oil & Gas Operator | Dec 2009 |
| 19948 | Natland Energy Corp | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 1996 |
| 19949 | Natomas North America Inc | | Oil & Gas Operator | Aug 1993 |
| 19950 | Natomas-McCormick-Coastal | | Oil & Gas Operator | Feb 1984 |
| 19951 | Natrona County Holdings LLC | Austin, TX 78701 | Oil & Gas Operator | Nov 2020 |
| 19952 | Natural Capital LLC | Castle Rock, CO 80104 | Oil & Gas Operator | Dec 2009 |
| 19953 | Natural Energy Dev Corp | Pittsburgh, PA 15241-1548 | Oil & Gas Operator | Dec 2018 |
| 19954 | Natural Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jul 1997 |
| 19955 | Natural Gas & Oil, Inc. | Fayette, AL 35555 | Oil & Gas Operator | Jun 2024 |
| 19956 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | Nov 2024 |
| 19957 | Natural Gas Anadarko Inc | Perryton, TX 79070 | Oil & Gas Operator | May 1999 |
| 19958 | Natural Gas Compression Corp | Cleveland, OK 74020 | Oil & Gas Operator | Nov 2023 |
| 19959 | Natural Gas Corp Of Ca | Vernal, UT 84078 | Oil & Gas Operator | Jun 1989 |
| 19960 | Natural Gas Corp Of California | Vernal, UT 84078 | Oil & Gas Operator | Dec 1989 |
| 19961 | Natural Gas Corp. Of Calif. | | Oil & Gas Operator | Dec 1987 |
| 19962 | Natural Gas Expl | | Oil & Gas Operator | Jul 1990 |
| 19963 | Natural Gas MKTG. & Storage Co. | Houston, TX 77251 | Oil & Gas Operator | Sep 1996 |
| 19964 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 19965 | Natural Gas Pipeline Co Of Amer. | Houston, TX 77002 | Gas Operator | Jul 2008 |
| 19966 | Natural Gas Processing Company | Worland, WY 82401 | Oil & Gas Operator | Sep 2024 |
| 19967 | Natural Gas Resources Inc | Davenport, IA 52809-1675 | Oil & Gas Operator | Oct 2022 |
| 19968 | Natural Gas Systems, Inc. | | Oil & Gas Operator | Dec 2002 |
| 19969 | Natural Oil & Gas Corp | Bradford, PA 16701 | Oil & Gas Operator | Dec 2023 |
| 19970 | Natural Petroleum Company | Overton, TX 75684 | Oil & Gas Operator | Jun 1994 |
| 19971 | Natural Progression Oil & Gas Corp | Stillwater, OK 74075 | Oil & Gas Operator | Sep 2024 |
| 19972 | Natural Reserves Group, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1993 |
| 19973 | Natural Resource Corporation | Rock Springs, WY 82901 | Oil & Gas Operator | Sep 1983 |
| 19974 | Natural Resource Group Inc | | Oil & Gas Operator | Jan 2024 |
| 19975 | Natural Resource MGMT. Corp. | | Oil & Gas Operator | Jun 1989 |
| 19976 | Natural Resources Operating LLC | Norman, OK 73071-1295 | Oil & Gas Operator | Jan 2023 |
| 19977 | Naumann Oil & Gas, Inc. | Austin, TX 78716 | Oil & Gas Operator | Nov 2024 |
| 19978 | Nautilus Exploration LLC | Denver, CO 80218 | Oil Operator | Mar 2011 |
| 19979 | Nautilus Exploration, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Nov 2021 |
| 19980 | Nautilus Poplar LLC | Poplar, MT 59255 | Oil Operator | Sep 2024 |
| 19981 | Navajo Exploration, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Nov 2024 |
| 19982 | Navajo Nation Oil & Gas Co | Window Rock, AZ 86511 | Oil & Gas Operator | Oct 2012 |
| 19983 | Navajo Oil Company | Wichita, KS 67206 | Gas Operator | May 2011 |
| 19984 | Navalo | Rockdale, TX 76567 | Oil Operator | Nov 2024 |
| 19985 | Navarro Exploration Co., Inc. | Kingwood, TX 77345 | Oil & Gas Operator | Nov 2024 |
| 19986 | Navarro Gas Production Company | | Gas Operator | Dec 1996 |
| 19987 | Navarro Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 19988 | Navasota Resources LTD. | | Oil & Gas Operator | Sep 2002 |
| 19989 | Navidad Operating Company, LLC | Flint, TX 75762 | Oil & Gas Operator | Nov 2024 |
| 19990 | Navidad Resources, LLC | Bullard, TX 75757 | Oil & Gas Operator | Nov 2024 |
| 19991 | Navigation Powder River LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2024 |
| 19992 | Navitas Land And Mineral Development, LLC | | Oil Operator | Dec 2016 |
| 19993 | Navitas Oil & Gas LLC | | Gas Operator | Dec 2012 |
| 19994 | Navitas Resources, LLC | | Oil & Gas Operator | May 2016 |
| 19995 | Navus Operating, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Nov 2024 |
| 19996 | Naylor Operating Company LLC | Perryton, TX 79079-9703 | Oil & Gas Operator | Sep 2012 |
| 19997 | Naylor-Pritchard | | Oil Operator | Jul 1987 |
| 19998 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Nov 2024 |
| 19999 | NBL Permian LLC | Houston, TX 77070 | Oil & Gas Operator | Aug 2018 |
| 20000 | NBX Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Nov 2024 |