| 20701 | Northwind Development Company | | Oil Operator | Oct 1995 |
| 20702 | Northwind Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1995 |
| 20703 | Northwind Oil & Gas, LLC | | Oil & Gas Operator | Nov 2019 |
| 20704 | Northwind Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | May 1998 |
| 20705 | Northwood Energy Corp | Columbus, OH 43221 | Oil & Gas Operator | Jun 2025 |
| 20706 | Norton Drilling Co. | Levelland, TX 79336 | Oil & Gas Operator | Nov 2001 |
| 20707 | Norton Frickey | Lakewood, CO 80215 | Oil & Gas Operator | Dec 2023 |
| 20708 | Norton Oil Co. | | Oil & Gas Operator | Jun 1984 |
| 20709 | Norvel Douglas Oil Inc. | H SPG NTL PK, AR 71909 | Oil Operator | Oct 2025 |
| 20710 | Norwes Industries, Inc. | | Oil & Gas Operator | Jun 2000 |
| 20711 | Norwood Energy, Inc | | Oil Operator | Dec 2015 |
| 20712 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 20713 | Norwood Oil Corp | Malakoff, TX 75148 | Oil & Gas Operator | Oct 1995 |
| 20714 | Norwood, A. N., Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 1997 |
| 20715 | Nosivad Oil, Inc. | Clyde, TX 79510 | Oil & Gas Operator | Oct 2025 |
| 20716 | Nossaman E Oil Inc | Del City, OK 73155-5449 | Oil Operator | Oct 2002 |
| 20717 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | Jun 2025 |
| 20718 | Notting Hill Energy LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 20719 | Nottis, David J. | West Valley, NY 14171 | Gas Operator | Dec 2024 |
| 20720 | Noumenon Corporation | Core, WV 26541-7072 | Oil & Gas Operator | Dec 2024 |
| 20721 | Nova Energy Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 20722 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 20723 | Nova Natural Res Corp | Denver, CO 80202 | Oil & Gas Operator | Nov 1989 |
| 20724 | Nova Petroleum Cororation | | Oil & Gas Operator | Mar 1987 |
| 20725 | Nova Petroleum Corp | Salt Lake City, UT 84147 | Oil & Gas Operator | Sep 1986 |
| 20726 | Novco Operating Company | Novice, TX 79538 | Oil & Gas Operator | Oct 2025 |
| 20727 | Novo Energy Resources | Houston, TX 77006 | Oil & Gas Operator | Oct 2025 |
| 20728 | Novo Exploration Corporation | Hurst, TX 76053 | Oil & Gas Operator | Jun 2020 |
| 20729 | Novo II Operating, LLC | Oklahoma City, OK 73116 | Gas Operator | Aug 2025 |
| 20730 | Novo Oil & Gas Northern Delaware, LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2025 |
| 20731 | Novus Louisiana LLC | | Oil & Gas Operator | Feb 2006 |
| 20732 | Novus Oil & Gas, LP | Houston, TX 77042 | Oil & Gas Operator | Nov 2005 |
| 20733 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Aug 2025 |
| 20734 | Now Development Co., Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2017 |
| 20735 | Nowata Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1997 |
| 20736 | Nowata Petroleum Operating Co | Nowata, OK 74048-9617 | Oil Operator | Aug 2014 |
| 20737 | Noxxe | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2023 |
| 20738 | Noxxe Oil And Gas, LLC | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 20739 | NP Energy Corporation | Englewood, CO 80111 | Oil & Gas Operator | Jun 1989 |
| 20740 | NP Resources, LLC | | Oil & Gas Operator | Aug 2022 |
| 20741 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Jun 2025 |
| 20742 | NRC Development, LLC | | Gas Operator | Nov 2002 |
| 20743 | NRD - Rein Resources, A General Partnership | Union, KY 41091 | Oil Operator | Jun 2025 |
| 20744 | NRG Assets Management, LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2016 |
| 20745 | NRG Oil LLC | Stratford, OK 74872-9732 | Oil Operator | Feb 2012 |
| 20746 | NRG Resources, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1987 |
| 20747 | NRPC Operating, LLC | Dallas, TX 75206 | Oil Operator | Feb 2012 |
| 20748 | NS Oil LLC | Minneapolis, MN 55410 | Oil Operator | Jun 2025 |
| 20749 | NT Minerals, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Oct 2025 |
| 20750 | NTR Energy LLC (Osage Cty Only) | | Oil & Gas Operator | Apr 2020 |
| 20751 | NTS Energy LLC | Indiana, PA 15701-1801 | Oil & Gas Operator | Dec 2015 |
| 20752 | Nub'S Well Servicing Inc | Ratliff City, OK 73481 | Oil & Gas Operator | Jul 2025 |
| 20753 | Nucomer Energy LLC | Erie, PA 16507 | Oil & Gas Operator | Jul 2025 |
| 20754 | Nucor Oil & Gas Inc | Riverton, WY 82501 | Oil & Gas Operator | Jul 2025 |
| 20755 | Nucorp Energy, Inc. | | Oil & Gas Operator | Jan 1985 |
| 20756 | Nueces Minerals Company | Dallas, TX 75251 | Oil & Gas Operator | May 2021 |
| 20757 | Nueces Oil Company | George West, TX 78022 | Oil & Gas Operator | Mar 2008 |
| 20758 | Nueces Petroleum Corporation | Sugar Land, TX 77496 | Oil Operator | Oct 2025 |
| 20759 | Nueces Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Oct 2002 |
| 20760 | Nuenergy LLC | | Oil & Gas Operator | Jul 2025 |
| 20761 | Nuevida Resources LLC | Dallas, TX 75235 | Gas Operator | Jul 2025 |
| 20762 | Nuevo Energy Company | Houston, TX 77002 | Oil & Gas Operator | Dec 2002 |
| 20763 | Nuevo Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2004 |
| 20764 | Nuex Operating, Inc. | | Oil Operator | Oct 2004 |
| 20765 | Nugulf Operating, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 20766 | Null, W. M. & San Patricio Corp. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Aug 1994 |
| 20767 | Null, W.M. Operations, Inc. | Corpus Chrsti, TX 78475 | Oil & Gas Operator | Jun 2002 |
| 20768 | Numac LLC | Cherryvale, KS 67335 | Oil Operator | Jun 2025 |
| 20769 | Numar Oil And Gas Corporation | Sante Fe, NM 87502 | Oil & Gas Operator | Oct 2025 |
| 20770 | Numatex, Inc | | Oil Operator | Dec 2013 |
| 20771 | Numen Corporation | | Oil & Gas Operator | Jan 1982 |
| 20772 | Nupower Energy, LLC | Houston, TX 77058 | Oil & Gas Operator | Oct 2025 |
| 20773 | Nuroc Energy Incorporated | Andrews, TX 79714 | Oil Operator | Aug 2025 |
| 20774 | Nuss Oil Operations | | Oil & Gas Operator | Aug 1998 |
| 20775 | Nuss Sally | | Oil Operator | Mar 1982 |
| 20776 | Nuss, Fred J. | Hoisington, KS 67544 | Gas Operator | Jun 2025 |
| 20777 | Nuss, Kenneth J. | Russell, KS 67665 | Oil Operator | Aug 1997 |
| 20778 | Nutek Oil Inc | San Antonio, TX 78254 | Oil & Gas Operator | Feb 2006 |
| 20779 | Nutt Jerrie | Duncan, OK 73534-0698 | Oil & Gas Operator | Nov 2016 |
| 20780 | Nuttco Oil & Gas | Corning, OH 43730 | Oil & Gas Operator | Dec 2010 |
| 20781 | Nuwi-Bayshore LLC | | Oil & Gas Operator | Dec 1999 |
| 20782 | NV O&G Investments LLC /Osage Only | | Oil Operator | Sep 2022 |
| 20783 | NWG Operating LLC | Canyon, TX 79015 | Oil & Gas Operator | Oct 2025 |
| 20784 | NWM Operating Inc | Okeene, OK 73763 | Oil & Gas Operator | Jun 2025 |
| 20785 | NWM Properties LLC | Tulsa, OK 74131-4426 | Oil Operator | May 2025 |
| 20786 | Ny Oil Inc. | | Oil Operator | Dec 2025 |
| 20787 | Nyc Resources LTD | Tulsa, OK 74133-5700 | Oil & Gas Operator | Sep 2014 |
| 20788 | Nye Exploration & Prod, L.L.C. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2025 |
| 20789 | Nye Oil Company | Oklahoma City, OK 73118-1245 | Oil & Gas Operator | Jun 2004 |
| 20790 | Nylund* J. W. | | Oil Operator | Jul 2000 |
| 20791 | Nytex Energy LLC | Edmond, OK 73083-5946 | Oil & Gas Operator | Sep 2015 |
| 20792 | Nytex Petroleum, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2014 |
| 20793 | Nytex, L.L.C. | Edmond, OK 73083 | Oil & Gas Operator | Feb 2006 |
| 20794 | Nytis Exploration Company LLC | Lexington, KY 40509 | Oil & Gas Operator | Dec 2021 |
| 20795 | NZ Operating Company Inc. | Houston, TX 77069 | Oil & Gas Operator | Oct 2025 |
| 20796 | O & G Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 1996 |
| 20797 | O & O Operators, LLC. | Fate, TX 75132 | Oil & Gas Operator | Oct 2025 |
| 20798 | O G & E | Oklahoma City, OK 73124 | Oil & Gas Operator | Feb 2014 |
| 20799 | O H Berry | Midland, TX 79702 | Oil & Gas Operator | Feb 2003 |
| 20800 | O Hill Enterprises, Inc. | La Grange, TX 78945 | Oil & Gas Operator | Jan 2014 |