| 20301 | Natural Gas Pipeline Co Of Amer. | Houston, TX 77002 | Gas Operator | Jul 2008 |
| 20302 | Natural Gas Processing Company | Worland, WY 82401 | Oil & Gas Operator | Mar 2025 |
| 20303 | Natural Gas Resources Inc | Davenport, IA 52809-1675 | Oil & Gas Operator | Oct 2022 |
| 20304 | Natural Gas Systems, Inc. | | Oil & Gas Operator | Dec 2002 |
| 20305 | Natural Oil & Gas Corp | Bradford, PA 16701 | Oil & Gas Operator | Dec 2023 |
| 20306 | Natural Petroleum Company | Overton, TX 75684 | Oil & Gas Operator | Jun 1994 |
| 20307 | Natural Progression Oil & Gas Corp | Stillwater, OK 74075 | Oil & Gas Operator | Mar 2025 |
| 20308 | Natural Reserves Group, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1993 |
| 20309 | Natural Resource Corporation | Rock Springs, WY 82901 | Oil & Gas Operator | Sep 1983 |
| 20310 | Natural Resource Group Inc | | Oil & Gas Operator | Jan 2024 |
| 20311 | Natural Resource MGMT. Corp. | | Oil & Gas Operator | Jun 1989 |
| 20312 | Natural Resources Operating LLC | Norman, OK 73071-1295 | Oil & Gas Operator | Jan 2023 |
| 20313 | Naumann Oil & Gas, Inc. | Austin, TX 78716 | Oil & Gas Operator | May 2025 |
| 20314 | Nautilus Exploration LLC | Denver, CO 80218 | Oil Operator | Mar 2011 |
| 20315 | Nautilus Exploration, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Nov 2021 |
| 20316 | Nautilus Poplar LLC | Poplar, MT 59255 | Oil Operator | Mar 2025 |
| 20317 | Navajo Exploration, Inc. | Corpus Chrsti, TX 78410 | Oil & Gas Operator | May 2025 |
| 20318 | Navajo Nation Oil & Gas Co | Window Rock, AZ 86511 | Oil & Gas Operator | Oct 2012 |
| 20319 | Navajo Oil Company | Wichita, KS 67206 | Gas Operator | May 2011 |
| 20320 | Navalo | Rockdale, TX 76567 | Oil Operator | May 2025 |
| 20321 | Navarro Exploration Co., Inc. | Kingwood, TX 77345 | Oil & Gas Operator | May 2025 |
| 20322 | Navarro Gas Production Company | | Gas Operator | Dec 1996 |
| 20323 | Navarro Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 20324 | Navasota Resources LTD. | | Oil & Gas Operator | Sep 2002 |
| 20325 | Navidad Operating Company, LLC | Flint, TX 75762 | Oil & Gas Operator | Jan 2025 |
| 20326 | Navidad Resources, LLC | Bullard, TX 75757 | Oil & Gas Operator | May 2025 |
| 20327 | Navigation Powder River LLC | Houston, TX 77024 | Oil & Gas Operator | Mar 2025 |
| 20328 | Navitas Land And Mineral Development, LLC | | Oil Operator | Dec 2016 |
| 20329 | Navitas Oil & Gas LLC | | Gas Operator | Dec 2012 |
| 20330 | Navitas Resources, LLC | | Oil & Gas Operator | May 2016 |
| 20331 | Navus Operating, Inc. | Dallas, TX 75367 | Oil & Gas Operator | May 2025 |
| 20332 | Naylor Operating Company LLC | Perryton, TX 79079-9703 | Oil & Gas Operator | Sep 2012 |
| 20333 | Naylor-Pritchard | | Oil Operator | Jul 1987 |
| 20334 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | May 2025 |
| 20335 | NBL Permian LLC | Houston, TX 77070 | Oil & Gas Operator | Aug 2018 |
| 20336 | NBX Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2025 |
| 20337 | NC Oil Company, Inc. | Humboldt, KS 66748 | Oil Operator | Dec 2024 |
| 20338 | Ncec, Inc. | Winnsboro, TX 75494 | Oil & Gas Operator | May 1994 |
| 20339 | Ncey Holdings, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2013 |
| 20340 | NCL Natural Resources LLC | Spring, TX 77381-5261-5261 | Oil & Gas Operator | Dec 2017 |
| 20341 | NCM Operations, Inc. | | Oil Operator | Oct 2000 |
| 20342 | NCX Company, Inc. | | Oil & Gas Operator | Aug 1999 |
| 20343 | Nea Cross Inc | Erie, PA 16508-2769 | Gas Operator | Dec 1991 |
| 20344 | Neal Lloyd Wayne | Sapulpa, OK 74066-8216 | Oil Operator | Jan 2021 |
| 20345 | Neal, Jack Engineering, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Feb 2011 |
| 20346 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | May 2025 |
| 20347 | Neas Operating | Pampa, TX 79065 | Oil & Gas Operator | Oct 2011 |
| 20348 | Neas Operating, LLC | Wimberley, TX 78676 | Oil & Gas Operator | May 2025 |
| 20349 | Neatherlin, Earl Inc. | Avoca, TX 79503 | Oil & Gas Operator | May 2025 |
| 20350 | Nebo Operating Company | | Oil & Gas Operator | Apr 1991 |
| 20351 | Nec Operating - Kansas, LLC | Southlake, TX 76092 | Oil & Gas Operator | Jan 2025 |
| 20352 | Nec Operating, LLC | Southlake, TX 76092 | Oil & Gas Operator | May 2025 |
| 20353 | Necessity Well Service | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 1994 |
| 20354 | Necessity Well Service, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2006 |
| 20355 | Neches Exploration, L.L.C. | Flint, TX 75762 | Oil & Gas Operator | May 2025 |
| 20356 | Neches Oil & Gas Company, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 20357 | Neches Transport Inc. | Spurger, TX 77660 | Oil & Gas Operator | May 2025 |
| 20358 | Neckers, Barry And Kathy | Clymer, NY 14724 | Gas Operator | Dec 2023 |
| 20359 | Neeb, H. L. | Abilene, TX 79606 | Oil & Gas Operator | Jul 1994 |
| 20360 | Needham Resources, Inc. | | Oil & Gas Operator | Jan 1998 |
| 20361 | Neeley, June | Mineral Wells, TX 76067 | Oil & Gas Operator | Feb 2008 |
| 20362 | Neely, H. K. | Abilene, TX 79604 | Oil & Gas Operator | Dec 1995 |
| 20363 | Neely, Steven A. | | Gas Operator | Dec 2021 |
| 20364 | Nees, Gordon III | Graham, TX 76450 | Oil & Gas Operator | Jun 2002 |
| 20365 | Neet Transport Co., Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | May 2025 |
| 20366 | Neff, Harold & Associates, Inc. | Tyler, TX 75702 | Oil & Gas Operator | May 2008 |
| 20367 | Neff, Inc. | Albany, TX 76430 | Oil & Gas Operator | Dec 2018 |
| 20368 | Neff, Mickey Oil Company | Colorado City, TX 79512 | Oil & Gas Operator | Jul 2023 |
| 20369 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Nov 2024 |
| 20370 | Nei Production, Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | May 2025 |
| 20371 | Neilco | | Oil & Gas Operator | Nov 2024 |
| 20372 | Neilson Inc | Nash, OK 73761 | Oil & Gas Operator | Aug 2022 |
| 20373 | Nelco Oil & Gas | Duncan, OK 73533-1516 | Oil & Gas Operator | Oct 2015 |
| 20374 | Nella Company LTD | | Oil Operator | Dec 1986 |
| 20375 | Nelmark Energy Corporation | San Antonio, TX 78231 | Oil & Gas Operator | Apr 2002 |
| 20376 | Nelms Bros. Oil Properties Inc. | Austin, TX 78711 | Oil & Gas Operator | Jun 1996 |
| 20377 | Nelson Billy L Trust | Okmulgee, OK 74447-2047 | Oil & Gas Operator | Feb 2015 |
| 20378 | Nelson Energy, Inc. | | Oil & Gas Operator | Nov 2024 |
| 20379 | Nelson Ent | | Oil Operator | Dec 2016 |
| 20380 | Nelson Exploration Corporation | Cleveland, OK 74020-5725 | Oil & Gas Operator | Jan 2025 |
| 20381 | Nelson Oil & Gas, Inc. | | Oil & Gas Operator | Aug 1995 |
| 20382 | Nelson Oil Corporation | | Oil Operator | Jul 1983 |
| 20383 | Nelson Ralph M Enterprises Inc | | Oil Operator | Apr 2025 |
| 20384 | Nelson, James L. | Pettus, TX 78146 | Oil & Gas Operator | May 2025 |
| 20385 | Nelson, Nathan M. | Machias, NY 14101 | Gas Operator | Dec 2023 |
| 20386 | Nelson, Roy K. & Co. | Arlington, TX 76016 | Oil & Gas Operator | Jul 1995 |
| 20387 | Nemaha Environmental Services LLC | Kremlin, OK 73753 | Oil Operator | Nov 2024 |
| 20388 | Nemaha Ridge, LLC | Coffeyville, KS 67337 | Oil Operator | Aug 2022 |
| 20389 | Nemo Fund I, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | May 2017 |
| 20390 | Nemours Corporation | | Gas Operator | Jan 1986 |
| 20391 | Neo Oilfield Services, LLC | Bristow, OK 74010 | Oil Operator | Oct 2015 |
| 20392 | Neodyne Drilling Corporation | Tulsa, OK 74153-0326 | Oil & Gas Operator | Apr 2020 |
| 20393 | Neok Production Company LLC | Nowata, OK 74048 | Oil & Gas Operator | Feb 2025 |
| 20394 | Neon Energy Corporation | | Oil Operator | Apr 2014 |
| 20395 | Neos Energy LLC | Columbus, OH 43220-0265 | Oil & Gas Operator | Dec 2024 |
| 20396 | Neosho Operating La, LLC | | Oil Operator | Oct 2016 |
| 20397 | Neosho Operating Services LLC | Neosho, MO 64850-0179 | Oil Operator | Mar 2017 |
| 20398 | Neostar Energy Co. | Crossville, TN 38572 | Oil & Gas Operator | Feb 2019 |
| 20399 | Nepeco | Byron, WY 82412 | Oil Operator | Mar 2025 |
| 20400 | Neptune Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Mar 2025 |