| 201 | Nelson Ent | | Oil Operator | Dec 2016 |
| 202 | Nelson Exploration Corporation | Cleveland, OK 74020-5725 | Oil & Gas Operator | Jul 2025 |
| 203 | Nelson Oil & Gas, Inc. | | Oil & Gas Operator | Aug 1995 |
| 204 | Nelson Oil Corporation | | Oil Operator | Jul 1983 |
| 205 | Nelson Ralph M Enterprises Inc | | Oil Operator | Jul 2025 |
| 206 | Nelson, James L. | Pettus, TX 78146 | Oil & Gas Operator | Sep 2025 |
| 207 | Nelson, Nathan M. | Machias, NY 14101 | Gas Operator | Dec 2024 |
| 208 | Nelson, Roy K. & Co. | Arlington, TX 76016 | Oil & Gas Operator | Jul 1995 |
| 209 | Nemaha Environmental Services LLC | Kremlin, OK 73753 | Oil Operator | Nov 2024 |
| 210 | Nemaha Ridge, LLC | Coffeyville, KS 67337 | Oil Operator | Aug 2022 |
| 211 | Nemo Fund I, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | May 2017 |
| 212 | Nemours Corporation | | Gas Operator | Jan 1986 |
| 213 | Neo Oilfield Services, LLC | Bristow, OK 74010 | Oil Operator | Oct 2015 |
| 214 | Neodyne Drilling Corporation | Tulsa, OK 74153-0326 | Oil & Gas Operator | Apr 2020 |
| 215 | Neok Production Company LLC | Nowata, OK 74048 | Oil & Gas Operator | Jun 2025 |
| 216 | Neon Energy Corporation | | Oil Operator | Apr 2014 |
| 217 | Neos Energy LLC | Columbus, OH 43220-0265 | Oil & Gas Operator | Dec 2024 |
| 218 | Neosho Operating La, LLC | | Oil Operator | Oct 2016 |
| 219 | Neosho Operating Services LLC | Neosho, MO 64850-0179 | Oil Operator | Mar 2017 |
| 220 | Neostar Energy Co. | Crossville, TN 38572 | Oil & Gas Operator | Feb 2019 |
| 221 | Nepeco | Byron, WY 82412 | Oil Operator | Jul 2025 |
| 222 | Neptune Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Jul 2025 |
| 223 | Nerco Oil & Gas, Inc. | | Oil & Gas Operator | Dec 1996 |
| 224 | Nerdlihc Company, Inc. | Long Beach, CA 90815 | Oil & Gas Operator | Nov 2006 |
| 225 | Nesitor West Texas LLC | Frisco, TX 75034 | Oil & Gas Operator | Sep 2025 |
| 226 | Nesler, Charles E. | | Oil & Gas Operator | Dec 2020 |
| 227 | Ness Crude Oil I | | Oil Operator | Mar 1994 |
| 228 | Nester, Holly, Inc. | | Gas Operator | Dec 2021 |
| 229 | Nestex Energy, LLC | Newtown, PA 18940 | Oil & Gas Operator | Aug 2014 |
| 230 | Nestor Petroleum Company | | Oil & Gas Operator | Jun 1986 |
| 231 | Netco Energy 1 LLC | | Oil Operator | Jan 2025 |
| 232 | Nethers Brothers LLC | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 233 | Nethers Gary L | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 234 | Nethers Oil And Gas LLC | Newark, OH 43055 | Oil Operator | Dec 2024 |
| 235 | Neu, Freddie | Gainesville, TX 76240 | Oil & Gas Operator | Sep 2025 |
| 236 | Neuhaus, V. F. Properties, Inc. | Palmhurst, TX 78573 | Oil & Gas Operator | Dec 2022 |
| 237 | Neuhoff Oil & Gas Corp. | | Oil & Gas Operator | Dec 1986 |
| 238 | Neumann Oil & Gas, LLC | Bigfoot, TX 78005 | Oil Operator | Sep 2025 |
| 239 | Neumann Ventures, Inc. | Cisco, TX 76437 | Oil Operator | Jan 2005 |
| 240 | Neumann, Alfred | Bigfoot, TX 78005 | Oil & Gas Operator | Aug 2003 |
| 241 | Neumin Production Company | Point Comfort, TX 77978 | Oil & Gas Operator | Sep 2025 |
| 242 | Nev-Tex Oil & Gas, Inc. | Reno, NV 89504 | Oil & Gas Operator | Sep 2025 |
| 243 | Nevada Oil, LLC | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2025 |
| 244 | Nevanen Energy, Inc. | | Oil & Gas Operator | Dec 2022 |
| 245 | New & Brasher | | Oil Operator | Mar 1982 |
| 246 | New & Brasher Operating | | Oil Operator | Oct 1984 |
| 247 | New & Hughes Drilling Co. Inc. | | Oil Operator | Jun 1983 |
| 248 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | May 2025 |
| 249 | New Arch Energy, LLC | Gruver, TX 79040 | Oil & Gas Operator | Sep 2025 |
| 250 | New Atlantis II, LLC | Big Spring, TX 79721 | Oil & Gas Operator | Sep 2025 |
| 251 | New Atlantis Oil & Expl., LLC | Big Spring, TX 79721 | Oil & Gas Operator | Feb 2012 |
| 252 | New Beginning | Seguin, TX 78156 | Oil Operator | Jun 2016 |
| 253 | New Bremen Corporation | Austin, TX 78701 | Oil & Gas Operator | Sep 1999 |
| 254 | New Century Energy Inc | MC Donald, PA 15057-2163 | Oil & Gas Operator | Dec 2021 |
| 255 | New Century Exploration, Inc. | Spring, TX 77379 | Oil & Gas Operator | Sep 2025 |
| 256 | New Century Operating, LLC | Spring, TX 77379 | Oil Operator | Apr 2021 |
| 257 | New Century Petroleum Corp | Oklahoma City, OK 73105 | Oil & Gas Operator | May 2013 |
| 258 | New Chaparral Petroleum Inc. | | Oil & Gas Operator | Dec 2005 |
| 259 | New Dominion LLC | Tulsa, OK 74119-3220 | Oil & Gas Operator | Jun 2025 |
| 260 | New Donna Lee Oil Company | Bakersfield, CA 93308 | Oil & Gas Operator | Jan 2025 |
| 261 | New Energy Corporation | Rancho Santa Fe, CA 92067-1990 | Oil & Gas Operator | Jul 2024 |
| 262 | New Era International | Graham, TX 76450 | Oil & Gas Operator | Sep 2017 |
| 263 | New Era Oil/Preferred Energy | | Oil & Gas Operator | Sep 1993 |
| 264 | New Era Petroleum Inc | Sheridan, WY 82801 | Oil Operator | Jul 2025 |
| 265 | New Frontier Energy Inc | | Gas Operator | Mar 2010 |
| 266 | New Generation Oil Inc | Russell, KS 67665 | Oil Operator | Feb 2002 |
| 267 | New Gulf Operating LLC | Tulsa, OK 74133 | Oil Operator | Sep 2023 |
| 268 | New Gulf Resources, LLC | Tulsa, OK 74133 | Oil & Gas Operator | May 2018 |
| 269 | New Height Energy, LLC | Houston, TX 77063 | Oil & Gas Operator | Sep 2025 |
| 270 | New Horizon Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jun 2006 |
| 271 | New Horizon Investments LTD. | George West, TX 78022 | Oil & Gas Operator | Sep 2025 |
| 272 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Sep 2025 |
| 273 | New Lift Inc | Nowata, OK 74048-0245 | Oil & Gas Operator | Mar 2015 |
| 274 | New London Oil I | | Oil Operator | Dec 1996 |
| 275 | New London Oil Inc. | Houston, TX 77253 | Oil & Gas Operator | Aug 2002 |
| 276 | New Millennium Resources, Inc. | | Oil & Gas Operator | Jul 2025 |
| 277 | New Ora Oil, Inc. | | Oil Operator | Aug 1984 |
| 278 | New Orleans Public Service Inc | | Oil Operator | Dec 1994 |
| 279 | New River Energy Corporation | | Gas Operator | Dec 2017 |
| 280 | New Source Oil & Gas, LLC | Victoria, TX 77903 | Oil & Gas Operator | Sep 2025 |
| 281 | New Tex Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | May 2016 |
| 282 | New Voyage Enterprises LLC | San Antonio, TX 78278 | Oil Operator | Sep 2025 |
| 283 | New Western Operating, LLC | Irvine, CA 92618 | Oil & Gas Operator | Dec 2019 |
| 284 | New York Natural Gas Corp | Pittsburgh, PA 15222-1402 | Gas Operator | Dec 1990 |
| 285 | New York Petroleum Corp. | | Oil & Gas Operator | Nov 1982 |
| 286 | New-Lonamen | | Oil & Gas Operator | Dec 2008 |
| 287 | New-Park, Inc. | | Oil Operator | Sep 1990 |
| 288 | New-Tex Operating II, LLC | Dallas, TX 75201 | Oil & Gas Operator | Sep 2025 |
| 289 | New-Tex Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Sep 2025 |
| 290 | Neward Corporation | FT. Worth, TX 76102 | Oil & Gas Operator | Dec 1997 |
| 291 | Newark E&P Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2017 |
| 292 | Newark Energy LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2011 |
| 293 | Newberry, Charles D Inc | Campbellsvlle, KY 42719 | Oil Operator | Sep 2025 |
| 294 | Newbridge Resources, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2025 |
| 295 | Newcastle Oil & Gas Inc | | Oil Operator | Dec 1988 |
| 296 | Newcastle Resources, LLC | Tyler, TX 75711 | Oil & Gas Operator | Aug 2015 |
| 297 | Newco Oil And Gas, LLC | McKinney, TX 75070 | Oil Operator | Sep 2025 |
| 298 | Newco, Inc. | Oklahoma City, OK 73177 | Oil Operator | Aug 1999 |
| 299 | Newell Energy LTD | | Gas Operator | Nov 2021 |
| 300 | Newell Oil And Gas LLC | Shawnee, OK 74801-5783 | Oil & Gas Operator | Jun 2025 |