| 20801 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 20802 | Northstar Resources Inc. | | Gas Operator | Feb 2025 |
| 20803 | Northwest Airport Management, LP | Spring, TX 77379 | Gas Operator | May 2025 |
| 20804 | Northwest Disposal Corporation | Laverne, OK 73848-0504 | Oil & Gas Operator | Jul 2014 |
| 20805 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 20806 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 20807 | Northwest Exploration Co | Salt Lake City, UT 84108-0900 | Oil & Gas Operator | Sep 1991 |
| 20808 | Northwest Louisiana Production LLC | | Oil & Gas Operator | Dec 2024 |
| 20809 | Northwest Natural Gas Co | Albion, PA 16401-9998 | Oil & Gas Operator | Dec 1990 |
| 20810 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 20811 | Northwest Petroleum Inc. | | Oil & Gas Operator | Feb 2025 |
| 20812 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 20813 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 20814 | Northwestern Corporation | Butte, MT 59701 | Oil & Gas Operator | Mar 2025 |
| 20815 | Northwestern Energy, LLC | Butte, MT 59701 | Oil & Gas Operator | Dec 2004 |
| 20816 | Northwestern Inc | East Brady, PA 16028 | Gas Operator | Dec 2012 |
| 20817 | Northwestern Natural Gas | | Gas Operator | Aug 2000 |
| 20818 | Northwestern Production LLC | | Oil & Gas Operator | Apr 2024 |
| 20819 | Northwind Development Company | | Oil Operator | Oct 1995 |
| 20820 | Northwind Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1995 |
| 20821 | Northwind Oil & Gas, LLC | | Oil & Gas Operator | Nov 2019 |
| 20822 | Northwind Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | May 1998 |
| 20823 | Northwood Energy Corp | Columbus, OH 43221 | Oil & Gas Operator | Dec 2024 |
| 20824 | Norton Drilling Co. | Levelland, TX 79336 | Oil & Gas Operator | Nov 2001 |
| 20825 | Norton Frickey | Lakewood, CO 80215 | Oil & Gas Operator | Dec 2023 |
| 20826 | Norton Oil Co. | | Oil & Gas Operator | Jun 1984 |
| 20827 | Norvel Douglas Oil Inc. | H SPG NTL PK, AR 71909 | Oil Operator | May 2025 |
| 20828 | Norwes Industries, Inc. | | Oil & Gas Operator | Jun 2000 |
| 20829 | Norwood Energy, Inc | | Oil Operator | Dec 2015 |
| 20830 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 20831 | Norwood Oil Corp | Malakoff, TX 75148 | Oil & Gas Operator | Oct 1995 |
| 20832 | Norwood, A. N., Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 1997 |
| 20833 | Nosivad Oil, Inc. | Clyde, TX 79510 | Oil & Gas Operator | May 2025 |
| 20834 | Nossaman E Oil Inc | Del City, OK 73155-5449 | Oil Operator | Oct 2002 |
| 20835 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | Jan 2025 |
| 20836 | Notting Hill Energy LLC | Fort Worth, TX 76101 | Oil & Gas Operator | May 2025 |
| 20837 | Nottis, David J. | West Valley, NY 14171 | Gas Operator | Dec 2023 |
| 20838 | Noumenon Corporation | Core, WV 26541-7072 | Oil & Gas Operator | Dec 2024 |
| 20839 | Nova Energy Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 20840 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 20841 | Nova Natural Res Corp | Denver, CO 80202 | Oil & Gas Operator | Nov 1989 |
| 20842 | Nova Petroleum Cororation | | Oil & Gas Operator | Mar 1987 |
| 20843 | Nova Petroleum Corp | Salt Lake City, UT 84147 | Oil & Gas Operator | Sep 1986 |
| 20844 | Novco Operating Company | Novice, TX 79538 | Oil & Gas Operator | May 2025 |
| 20845 | Novo Energy Resources | Houston, TX 77006 | Oil & Gas Operator | May 2025 |
| 20846 | Novo Exploration Corporation | Hurst, TX 76053 | Oil & Gas Operator | Jun 2020 |
| 20847 | Novo Oil & Gas Northern Delaware, LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 20848 | Novus Louisiana LLC | | Oil & Gas Operator | Feb 2006 |
| 20849 | Novus Oil & Gas, LP | Houston, TX 77042 | Oil & Gas Operator | Nov 2005 |
| 20850 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Mar 2025 |
| 20851 | Now Development Co., Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2017 |
| 20852 | Nowata Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1997 |
| 20853 | Nowata Petroleum Operating Co | Nowata, OK 74048-9617 | Oil Operator | Aug 2014 |
| 20854 | Noxxe | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2023 |
| 20855 | Noxxe Oil And Gas, LLC | Houston, TX 77269 | Oil & Gas Operator | May 2025 |
| 20856 | NP Energy Corporation | Englewood, CO 80111 | Oil & Gas Operator | Jun 1989 |
| 20857 | NP Resources, LLC | | Oil & Gas Operator | Aug 2022 |
| 20858 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Jan 2025 |
| 20859 | NRC Development, LLC | | Gas Operator | Nov 2002 |
| 20860 | NRD - Rein Resources, A General Partnership | Union, KY 41091 | Oil Operator | Jan 2025 |
| 20861 | NRG Assets Management, LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2016 |
| 20862 | NRG Oil LLC | Stratford, OK 74872-9732 | Oil Operator | Feb 2012 |
| 20863 | NRG Resources, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1987 |
| 20864 | NRPC Operating, LLC | Dallas, TX 75206 | Oil Operator | Feb 2012 |
| 20865 | NS Oil LLC | Minneapolis, MN 55410 | Oil Operator | Feb 2025 |
| 20866 | NT Minerals, LLC | Tulsa, OK 74172 | Oil & Gas Operator | May 2025 |
| 20867 | NTR Energy LLC (Osage Cty Only) | | Oil & Gas Operator | Apr 2020 |
| 20868 | NTS Energy LLC | Indiana, PA 15701-1801 | Oil & Gas Operator | Dec 2015 |
| 20869 | Nub'S Well Servicing Inc | Ratliff City, OK 73481 | Oil & Gas Operator | Mar 2025 |
| 20870 | Nucomer Energy LLC | Erie, PA 16507 | Oil & Gas Operator | Mar 2025 |
| 20871 | Nucor Oil & Gas Inc | Riverton, WY 82501 | Oil & Gas Operator | Mar 2025 |
| 20872 | Nucorp Energy, Inc. | | Oil & Gas Operator | Jan 1985 |
| 20873 | Nueces Minerals Company | Dallas, TX 75251 | Oil & Gas Operator | May 2021 |
| 20874 | Nueces Oil Company | George West, TX 78022 | Oil & Gas Operator | Mar 2008 |
| 20875 | Nueces Petroleum Corporation | Sugar Land, TX 77496 | Oil Operator | May 2025 |
| 20876 | Nueces Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Oct 2002 |
| 20877 | Nuenergy LLC | | Oil & Gas Operator | Jan 2025 |
| 20878 | Nuevida Resources LLC | Dallas, TX 75235 | Gas Operator | Mar 2025 |
| 20879 | Nuevo Energy Company | Houston, TX 77002 | Oil & Gas Operator | Dec 2002 |
| 20880 | Nuevo Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2004 |
| 20881 | Nuex Operating, Inc. | | Oil Operator | Oct 2004 |
| 20882 | Nugulf Operating, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 20883 | Null, W. M. & San Patricio Corp. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Aug 1994 |
| 20884 | Null, W.M. Operations, Inc. | Corpus Chrsti, TX 78475 | Oil & Gas Operator | Jun 2002 |
| 20885 | Numac LLC | Cherryvale, KS 67335 | Oil Operator | Dec 2024 |
| 20886 | Numar Oil And Gas Corporation | Sante Fe, NM 87502 | Oil & Gas Operator | May 2025 |
| 20887 | Numatex, Inc | | Oil Operator | Dec 2013 |
| 20888 | Numen Corporation | | Oil & Gas Operator | Jan 1982 |
| 20889 | Nupower Energy, LLC | Houston, TX 77058 | Oil & Gas Operator | May 2025 |
| 20890 | Nuroc Energy Incorporated | Andrews, TX 79714 | Oil Operator | Mar 2025 |
| 20891 | Nuss Oil Operations | | Oil & Gas Operator | Aug 1998 |
| 20892 | Nuss Sally | | Oil Operator | Mar 1982 |
| 20893 | Nuss, Fred J. | Hoisington, KS 67544 | Gas Operator | Jan 2025 |
| 20894 | Nuss, Kenneth J. | Russell, KS 67665 | Oil Operator | Aug 1997 |
| 20895 | Nutek Oil Inc | San Antonio, TX 78254 | Oil & Gas Operator | Feb 2006 |
| 20896 | Nutt Jerrie | Duncan, OK 73534-0698 | Oil & Gas Operator | Nov 2016 |
| 20897 | Nuttco Oil & Gas | Corning, OH 43730 | Oil & Gas Operator | Dec 2010 |
| 20898 | Nuwi-Bayshore LLC | | Oil & Gas Operator | Dec 1999 |
| 20899 | NV O&G Investments LLC /Osage Only | | Oil Operator | Sep 2022 |
| 20900 | NWG Operating LLC | Canyon, TX 79015 | Oil & Gas Operator | May 2025 |