| 20201 | Nathan Hale Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 20202 | Nathan Petroleum Corp., Yahn & Yahn Inc | Rexville, NY 14877 | Oil & Gas Operator | Dec 2023 |
| 20203 | Nathan Petroleum Corporation | Rexville, NY 14877 | Oil & Gas Operator | Dec 2023 |
| 20204 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 20205 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 20206 | National Cooperative RFG Assoc | McPherson, KS 67460-1404 | Oil & Gas Operator | Jun 2006 |
| 20207 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 20208 | National Energy Exp Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 20209 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 20210 | National Exploration Company | | Oil & Gas Operator | Mar 1982 |
| 20211 | National Fuel Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Apr 2025 |
| 20212 | National Fuel Gas Supply Corporation | | Gas Operator | Dec 2010 |
| 20213 | National Investors Group | Warren, OH 44481 | Oil & Gas Operator | Nov 1996 |
| 20214 | National Offshore LP | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 20215 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 20216 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 20217 | National Oil Company (Ohio) The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 20218 | National Onshore LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 20219 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 20220 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 20221 | National Pride Operating | Parker, CO 80134 | Oil & Gas Operator | Dec 2017 |
| 20222 | National Surface & Minerals, LLC | Addison, TX 75001 | Gas Operator | Jan 2023 |
| 20223 | National Treasure Mines | San Marina, CA 91118 | Oil Operator | Dec 1998 |
| 20224 | Native Exploration Operating LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Mar 2025 |
| 20225 | Native Gas Company LLC | Edmond, OK 73083-7435 | Oil & Gas Operator | Mar 2015 |
| 20226 | Nativity Of Our Lord | Orchard Park, NY 14127 | Gas Operator | Dec 2023 |
| 20227 | Natl Fuel Gas Supply Corp | Williamsville, NY 14221-5887 | Oil & Gas Operator | Dec 2009 |
| 20228 | Natland Energy Corp | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 1996 |
| 20229 | Natomas North America Inc | | Oil & Gas Operator | Aug 1993 |
| 20230 | Natomas-McCormick-Coastal | | Oil & Gas Operator | Feb 1984 |
| 20231 | Natrona County Holdings LLC | Austin, TX 78701 | Oil & Gas Operator | Nov 2020 |
| 20232 | Natural Capital LLC | Castle Rock, CO 80104 | Oil & Gas Operator | Dec 2009 |
| 20233 | Natural Energy Dev Corp | Pittsburgh, PA 15241-1548 | Oil & Gas Operator | Dec 2018 |
| 20234 | Natural Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jul 1997 |
| 20235 | Natural Gas & Oi | | Gas Operator | Dec 1987 |
| 20236 | Natural Gas & Oil, Inc. | Fayette, AL 35555 | Oil & Gas Operator | Mar 2025 |
| 20237 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | Jun 2025 |
| 20238 | Natural Gas Anadarko Inc | Perryton, TX 79070 | Oil & Gas Operator | May 1999 |
| 20239 | Natural Gas Compression Corp | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 20240 | Natural Gas Corp Of Ca | Vernal, UT 84078 | Oil & Gas Operator | Jun 1989 |
| 20241 | Natural Gas Corp Of California | Vernal, UT 84078 | Oil & Gas Operator | Dec 1989 |
| 20242 | Natural Gas Corp. Of Calif. | | Oil & Gas Operator | Dec 1987 |
| 20243 | Natural Gas Expl | | Oil & Gas Operator | Jul 1990 |
| 20244 | Natural Gas MKTG. & Storage Co. | Houston, TX 77251 | Oil & Gas Operator | Sep 1996 |
| 20245 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 20246 | Natural Gas Pipeline Co Of Amer. | Houston, TX 77002 | Gas Operator | Jul 2008 |
| 20247 | Natural Gas Processing Company | Worland, WY 82401 | Oil & Gas Operator | Apr 2025 |
| 20248 | Natural Gas Resources Inc | Davenport, IA 52809-1675 | Oil & Gas Operator | Oct 2022 |
| 20249 | Natural Gas Systems, Inc. | | Oil & Gas Operator | Dec 2002 |
| 20250 | Natural Oil & Gas Corp | Bradford, PA 16701 | Oil & Gas Operator | Dec 2023 |
| 20251 | Natural Petroleum Company | Overton, TX 75684 | Oil & Gas Operator | Jun 1994 |
| 20252 | Natural Progression Oil & Gas Corp | Stillwater, OK 74075 | Oil & Gas Operator | Apr 2025 |
| 20253 | Natural Reserves Group, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1993 |
| 20254 | Natural Resource Corporation | Rock Springs, WY 82901 | Oil & Gas Operator | Sep 1983 |
| 20255 | Natural Resource Group Inc | | Oil & Gas Operator | Jan 2024 |
| 20256 | Natural Resource MGMT. Corp. | | Oil & Gas Operator | Jun 1989 |
| 20257 | Natural Resources Operating LLC | Norman, OK 73071-1295 | Oil & Gas Operator | Jan 2023 |
| 20258 | Naumann Oil & Gas, Inc. | Austin, TX 78716 | Oil & Gas Operator | Jun 2025 |
| 20259 | Nautilus Exploration LLC | Denver, CO 80218 | Oil Operator | Mar 2011 |
| 20260 | Nautilus Exploration, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Nov 2021 |
| 20261 | Nautilus Poplar LLC | Poplar, MT 59255 | Oil Operator | Mar 2025 |
| 20262 | Navajo Exploration, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | Jun 2025 |
| 20263 | Navajo Nation Oil & Gas Co | Window Rock, AZ 86511 | Oil & Gas Operator | Oct 2012 |
| 20264 | Navajo Oil Company | Wichita, KS 67206 | Gas Operator | May 2011 |
| 20265 | Navalo | Rockdale, TX 76567 | Oil Operator | Jun 2025 |
| 20266 | Navarro Exploration Co., Inc. | Kingwood, TX 77345 | Oil & Gas Operator | Jun 2025 |
| 20267 | Navarro Gas Production Company | | Gas Operator | Dec 1996 |
| 20268 | Navarro Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 20269 | Navasota Resources LTD. | | Oil & Gas Operator | Sep 2002 |
| 20270 | Navidad Operating Company, LLC | Flint, TX 75762 | Oil & Gas Operator | Jan 2025 |
| 20271 | Navidad Resources, LLC | Bullard, TX 75757 | Oil & Gas Operator | Jun 2025 |
| 20272 | Navigation Powder River LLC | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 20273 | Navitas Land And Mineral Development, LLC | | Oil Operator | Dec 2016 |
| 20274 | Navitas Oil & Gas LLC | | Gas Operator | Dec 2012 |
| 20275 | Navitas Resources, LLC | | Oil & Gas Operator | May 2016 |
| 20276 | Navus Operating, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Jun 2025 |
| 20277 | Naylor Operating Company LLC | Perryton, TX 79079-9703 | Oil & Gas Operator | Sep 2012 |
| 20278 | Naylor-Pritchard | | Oil Operator | Jul 1987 |
| 20279 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Jun 2025 |
| 20280 | NBL Permian LLC | Houston, TX 77070 | Oil & Gas Operator | Aug 2018 |
| 20281 | NBX Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Jun 2025 |
| 20282 | NC Oil Company, Inc. | Humboldt, KS 66748 | Oil Operator | Dec 2024 |
| 20283 | Ncec, Inc. | Winnsboro, TX 75494 | Oil & Gas Operator | May 1994 |
| 20284 | Ncey Holdings, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2013 |
| 20285 | NCL Natural Resources LLC | Spring, TX 77381-5261-5261 | Oil & Gas Operator | Dec 2017 |
| 20286 | NCM Operations, Inc. | | Oil Operator | Oct 2000 |
| 20287 | NCX Company, Inc. | | Oil & Gas Operator | Aug 1999 |
| 20288 | Nea Cross Inc | Erie, PA 16508-2769 | Gas Operator | Dec 1991 |
| 20289 | Neal Lloyd Wayne | Sapulpa, OK 74066-8216 | Oil Operator | Jan 2021 |
| 20290 | Neal, Jack Engineering, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Feb 2011 |
| 20291 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Jun 2025 |
| 20292 | Neas Operating | Pampa, TX 79065 | Oil & Gas Operator | Oct 2011 |
| 20293 | Neas Operating, LLC | Wimberley, TX 78676 | Oil & Gas Operator | Jun 2025 |
| 20294 | Neatherlin, Earl Inc. | Avoca, TX 79503 | Oil & Gas Operator | Jun 2025 |
| 20295 | Nebo Operating Company | | Oil & Gas Operator | Apr 1991 |
| 20296 | Nec Operating - Kansas, LLC | Southlake, TX 76092 | Oil & Gas Operator | Feb 2025 |
| 20297 | Nec Operating, LLC | Southlake, TX 76092 | Oil & Gas Operator | Jun 2025 |
| 20298 | Necessity Well Service | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 1994 |
| 20299 | Necessity Well Service, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2006 |
| 20300 | Neches Exploration, L.L.C. | Flint, TX 75762 | Oil & Gas Operator | Jun 2025 |