| 20201 | Northland Petroleum, LLC | Houston, TX 77043 | Oil Operator | Jun 2026 |
| 20202 | Northport Production Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 20203 | Northridge Exploration, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2026 |
| 20204 | Northridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2026 |
| 20205 | Northrop, Marilynne | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 20206 | Northshore Petroleum LLC | | Oil Operator | Feb 2009 |
| 20207 | Northstar Energy Corporation | Charleston, WV 25337-0000 | Oil & Gas Operator | Dec 2021 |
| 20208 | Northstar Energy LLC | | Gas Operator | Sep 2020 |
| 20209 | Northstar Gas Company Of Texas | Houston, TX 77057-2768 | Oil & Gas Operator | Jan 2026 |
| 20210 | Northstar Gas Company, Inc. | | Oil & Gas Operator | Jan 2016 |
| 20211 | Northstar Gas, Inc. | Orem, UT 84097-6360 | Oil & Gas Operator | Mar 2026 |
| 20212 | Northstar Gulfsands, LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2006 |
| 20213 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Feb 2026 |
| 20214 | Northstar Offshore Group, LLC | | Oil & Gas Operator | Apr 2020 |
| 20215 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 20216 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 20217 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 20218 | Northstar Resources, LLC | Houston, TX 77018 | Oil & Gas Operator | Jun 2026 |
| 20219 | Northwest Airport Management, LP | Spring, TX 77379 | Gas Operator | Jun 2026 |
| 20220 | Northwest Disposal Corporation | Laverne, OK 73848-0504 | Oil & Gas Operator | Jul 2014 |
| 20221 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 20222 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 20223 | Northwest Exploration Co | Salt Lake City, UT 84108-0900 | Oil & Gas Operator | Sep 1991 |
| 20224 | Northwest Louisiana Production LLC | | Oil & Gas Operator | Dec 2024 |
| 20225 | Northwest Natural Gas Co | Albion, PA 16401-9998 | Oil & Gas Operator | Dec 1990 |
| 20226 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 20227 | Northwest Petroleum Inc. | | Oil & Gas Operator | Dec 2025 |
| 20228 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 20229 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 20230 | Northwestern Corporation | Butte, MT 59701 | Oil & Gas Operator | Mar 2026 |
| 20231 | Northwestern Energy, LLC | Butte, MT 59701 | Oil & Gas Operator | Dec 2004 |
| 20232 | Northwestern Inc | East Brady, PA 16028 | Gas Operator | Dec 2012 |
| 20233 | Northwestern Natural Gas | | Gas Operator | Aug 2000 |
| 20234 | Northwestern Production LLC | | Oil & Gas Operator | Apr 2024 |
| 20235 | Northwind Development Company | | Oil Operator | Oct 1995 |
| 20236 | Northwind Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1995 |
| 20237 | Northwind Oil & Gas, LLC | | Oil & Gas Operator | Nov 2019 |
| 20238 | Northwind Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | May 1998 |
| 20239 | Northwood Energy Corp | Columbus, OH 43221 | Oil & Gas Operator | Mar 2026 |
| 20240 | Northwoods Land Inc | Denver, CO 80202 | Oil & Gas Operator | Mar 2026 |
| 20241 | Norton Drilling Co. | Levelland, TX 79336 | Oil & Gas Operator | Nov 2001 |
| 20242 | Norton Frickey | Lakewood, CO 80215 | Oil & Gas Operator | Dec 2023 |
| 20243 | Norton Oil Co. | | Oil & Gas Operator | Jun 1984 |
| 20244 | Norvel Douglas Oil Inc. | Hot Springs V, AR 71909 | Oil Operator | Oct 2025 |
| 20245 | Norwes Industries, Inc. | | Oil & Gas Operator | Jun 2000 |
| 20246 | Norwood Energy, Inc | | Oil Operator | Dec 2015 |
| 20247 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 20248 | Norwood Oil Corp | Malakoff, TX 75148 | Oil & Gas Operator | Oct 1995 |
| 20249 | Norwood, A. N., Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 1997 |
| 20250 | Nosivad Oil, Inc. | Clyde, TX 79510 | Oil & Gas Operator | Jun 2026 |
| 20251 | Nossaman E Oil Inc | Del City, OK 73155-5449 | Oil Operator | Oct 2002 |
| 20252 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | Feb 2026 |
| 20253 | Notting Hill Energy LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Jun 2026 |
| 20254 | Nottis, David J. | West Valley, NY 14171 | Gas Operator | Dec 2024 |
| 20255 | Noumenon Corporation | Core, WV 26541-7072 | Oil & Gas Operator | Dec 2025 |
| 20256 | Nova Energy Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 20257 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 20258 | Nova Natural Res Corp | Denver, CO 80202 | Oil & Gas Operator | Nov 1989 |
| 20259 | Nova Petroleum Cororation | | Oil & Gas Operator | Mar 1987 |
| 20260 | Nova Petroleum Corp | Salt Lake City, UT 84147 | Oil & Gas Operator | Sep 1986 |
| 20261 | Novco Operating Company | Novice, TX 79538 | Oil & Gas Operator | Jun 2026 |
| 20262 | Novo Energy Resources | Houston, TX 77006 | Oil & Gas Operator | Jun 2026 |
| 20263 | Novo Exploration Corporation | Hurst, TX 76053 | Oil & Gas Operator | Jun 2020 |
| 20264 | Novo Oil & Gas Northern Delaware, LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2026 |
| 20265 | Novus Louisiana LLC | | Oil & Gas Operator | Feb 2006 |
| 20266 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Apr 2026 |
| 20267 | Now Development Co., Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2017 |
| 20268 | Nowata Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1997 |
| 20269 | Nowata Petroleum Operating Co | Nowata, OK 74048-9617 | Oil Operator | Aug 2014 |
| 20270 | Nowea, Inc | Melbourne, FL 32901 | Oil Operator | Dec 2024 |
| 20271 | Noxxe | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2024 |
| 20272 | Noxxe Oil And Gas, LLC | Houston, TX 77269 | Oil & Gas Operator | Jun 2026 |
| 20273 | NP Energy Corporation | Englewood, CO 80111 | Oil & Gas Operator | Jun 1989 |
| 20274 | NP Resources, LLC | | Oil & Gas Operator | Aug 2022 |
| 20275 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Feb 2026 |
| 20276 | NRC Development, LLC | | Gas Operator | Nov 2002 |
| 20277 | NRD - Rein Resources, A General Partnership | Union, KY 41091 | Oil Operator | Feb 2026 |
| 20278 | NRG Assets Management, LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2016 |
| 20279 | NRG Oil LLC | Stratford, OK 74872-9732 | Oil Operator | Feb 2012 |
| 20280 | NRG Resources, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1987 |
| 20281 | NRPC Operating, LLC | Dallas, TX 75206 | Oil Operator | Feb 2012 |
| 20282 | NS Oil LLC | Minneapolis, MN 55410 | Oil Operator | Feb 2026 |
| 20283 | NSP Resources, LLC | Houston, TX 77018 | Oil & Gas Operator | Mar 2026 |
| 20284 | NT Minerals, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Jun 2026 |
| 20285 | NTR Energy LLC (Osage Cty Only) | | Oil & Gas Operator | Apr 2020 |
| 20286 | NTS Energy LLC | Indiana, PA 15701-1801 | Oil & Gas Operator | Dec 2015 |
| 20287 | Nub'S Well Servicing Inc | Ratliff City, OK 73481 | Oil & Gas Operator | Mar 2026 |
| 20288 | Nucomer Energy LLC | Erie, PA 16510 | Oil & Gas Operator | Mar 2026 |
| 20289 | Nucor Oil & Gas Inc | Riverton, WY 82501 | Oil & Gas Operator | Mar 2026 |
| 20290 | Nucorp Energy, Inc. | | Oil & Gas Operator | Jan 1985 |
| 20291 | Nueces Minerals Company | Dallas, TX 75251 | Oil & Gas Operator | May 2021 |
| 20292 | Nueces Oil Company | George West, TX 78022 | Oil & Gas Operator | Mar 2008 |
| 20293 | Nueces Petroleum Corporation | Sugar Land, TX 77496 | Oil Operator | Jun 2026 |
| 20294 | Nueces Reserves, Inc. | Houston, TX 77019 | Oil & Gas Operator | Oct 2002 |
| 20295 | Nuenergy LLC | | Oil & Gas Operator | Mar 2026 |
| 20296 | Nuevida Resources, LLC | Dallas, TX 75235 | Gas Operator | Feb 2026 |
| 20297 | Nuevo Energy Company | Houston, TX 77002 | Oil & Gas Operator | Dec 2002 |
| 20298 | Nuevo Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2004 |
| 20299 | Nuex Operating, Inc. | | Oil Operator | Oct 2004 |
| 20300 | Nugulf Operating, L.L.C. | | Oil & Gas Operator | Dec 2024 |