| 21301 | North Harmony Ventures, Inc. | Jamestown, NY 14701 | Oil & Gas Operator | Dec 2024 |
| 21302 | North John M | Valatie, NY 12184-5005 | Gas Operator | Dec 2014 |
| 21303 | North Lake Resources LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Feb 2026 |
| 21304 | North Lea Energy Co., LLC | Crossroads, NM 88114 | Oil & Gas Operator | Dec 2025 |
| 21305 | North Of River Sanitary District | | Oil & Gas Operator | Dec 2002 |
| 21306 | North Operating Company | Canton, TX 75103 | Oil & Gas Operator | Feb 2026 |
| 21307 | North Pacific Oil And Gas, Inc | Houston, TX 77042 | Oil Operator | Mar 2013 |
| 21308 | North Padre Explor. Venture LLC | Corpus Chrsti, TX 78473 | Oil & Gas Operator | May 2004 |
| 21309 | North Penn Gas Co | Allentown, PA 18101-1139 | Gas Operator | Dec 2000 |
| 21310 | North Plains Corp | Tulsa, OK 74137 | Oil & Gas Operator | Sep 2025 |
| 21311 | North Plains Energy, LLC | | Oil & Gas Operator | Jan 2016 |
| 21312 | North Plains Oil | | Oil Operator | Jul 1990 |
| 21313 | North Range Resources, LLC | | Oil & Gas Operator | Nov 2023 |
| 21314 | North Ridge Corporation | Duncanville, TX 75137 | Oil & Gas Operator | Feb 2026 |
| 21315 | North Ridge Energy Inc | Rome, OH 44085-9713 | Oil & Gas Operator | Dec 2024 |
| 21316 | North Shore Energy, L.L.C. | Austin, TX 78750 | Oil & Gas Operator | Feb 2026 |
| 21317 | North Shore Exploration & Prod LLC | Broomfield, CO 80021 | Oil & Gas Operator | Dec 2025 |
| 21318 | North Silo Resources LLC | Houston, TX 77055 | Oil & Gas Operator | Dec 2025 |
| 21319 | North Slope Borough | | Gas Operator | Dec 2025 |
| 21320 | North South Oil, LLC | Luling, TX 78648 | Oil Operator | Feb 2026 |
| 21321 | North Star Energy Resources LLC | Waynesburg, PA 15370-3833 | Gas Operator | Dec 2024 |
| 21322 | North Star Energy, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Jan 2010 |
| 21323 | North Star Exploration Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Oct 2025 |
| 21324 | North Star Petroleum Corp. | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1993 |
| 21325 | North Texas Energy,Inc. | Dallas, TX 75252 | Oil Operator | Feb 2026 |
| 21326 | North Texas Engineering | Midland, TX 79710 | Oil & Gas Operator | Nov 2002 |
| 21327 | North Texas Llano Operating Corp | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 21328 | North Texas Oil & Gas, LLC | Edmond, OK 73013 | Oil & Gas Operator | Feb 2026 |
| 21329 | North Texas Plugging, LLC | Denton, TX 76205 | Oil & Gas Operator | Feb 2026 |
| 21330 | North Texas Pure Gold, LLC | Graham, TX 76450 | Oil Operator | Sep 2008 |
| 21331 | North Valley Gaswell Services | | Gas Operator | Nov 2025 |
| 21332 | North Valley Oil & Gas Co. | | Oil & Gas Operator | Dec 1996 |
| 21333 | Northam Oil Company Inc | Ada, OK 74820-3334 | Oil & Gas Operator | Feb 2025 |
| 21334 | Northamerican Service Group | Katy, TX 77449 | Oil & Gas Operator | Feb 2026 |
| 21335 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 21336 | Northbrook Oil & Gas Company | Norman, OK 73070-4916 | Oil & Gas Operator | Jun 2016 |
| 21337 | Northcoast Oil Company | | Oil & Gas Operator | Mar 2009 |
| 21338 | Northcote Cleveland LLC | Borger, TX 79008 | Oil & Gas Operator | Nov 2025 |
| 21339 | Northcott Exploration Co. Inc. | | Oil & Gas Operator | Dec 1987 |
| 21340 | Northcutt Production | Bangs, TX 76823 | Oil & Gas Operator | Feb 2026 |
| 21341 | Northeast Loop Gas Company, L.P. | Dallas, TX 75225 | Gas Operator | Jan 2003 |
| 21342 | Northeast Natural Energy LLC | Charleston, WV 25301-2719 | Oil & Gas Operator | Dec 2025 |
| 21343 | Northeast Production Co Inc | | Oil & Gas Operator | May 2013 |
| 21344 | Northeast Resources | | Oil & Gas Operator | Jan 1992 |
| 21345 | Northeast Shelf Energy, L.L.C. | | Oil & Gas Operator | Jun 2017 |
| 21346 | Northeast Texas Production Co. | Marshall, TX 75671 | Oil & Gas Operator | Feb 2026 |
| 21347 | Northeastern Energy | Warren, OH 44484 | Oil & Gas Operator | Dec 1991 |
| 21348 | Northeastern Energy Corp | | Oil Operator | Dec 2014 |
| 21349 | Northeastern Exploration Corp | Gibsonia, PA 15044-9208 | Gas Operator | Dec 1998 |
| 21350 | Northeastern Opr Co Inc | Shelocta, PA 15774-2346 | Gas Operator | Dec 2025 |
| 21351 | Northern Energy Devel. Co. | | Gas Operator | Dec 1995 |
| 21352 | Northern Energy Management | | Oil & Gas Operator | Nov 2019 |
| 21353 | Northern Gas Pro | | Gas Operator | Jun 1994 |
| 21354 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 21355 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Sep 2025 |
| 21356 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 21357 | Northern Michigan Oil And Gas Corp | | Oil Operator | Oct 2015 |
| 21358 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 21359 | Northern Oil And Gas, Inc. | Borger, TX 79007 | Oil & Gas Operator | Feb 2026 |
| 21360 | Northern Oil Production, Inc. | Bozeman, MT 59718 | Oil & Gas Operator | Dec 2025 |
| 21361 | Northern Pacific Oil And Gas Incorporated | Houston, TX 77024 | Oil & Gas Operator | Dec 2022 |
| 21362 | Northern Processors Inc | The Woodlands, TX 77387-9385 | Oil & Gas Operator | Sep 2010 |
| 21363 | Northern Producing LLC | Shelby, MT 59474 | Oil Operator | Nov 2025 |
| 21364 | Northern Production Co | Gillette, WY 82717 | Oil & Gas Operator | Apr 2013 |
| 21365 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 21366 | Northfield Enterprises | Bryan, TX 77805 | Oil & Gas Operator | Dec 1993 |
| 21367 | Northfield Enterprises, Inc. | Bryan, TX 77802 | Oil & Gas Operator | Feb 2026 |
| 21368 | Northfork Exploration LLC | Electra, TX 76360 | Oil Operator | Feb 2026 |
| 21369 | Northla Productions, LLC | | Oil & Gas Operator | Dec 2024 |
| 21370 | Northland Holdings, Inc. | Calgary, AB T2J 7H2 | Gas Operator | May 2017 |
| 21371 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |
| 21372 | Northland Petroleum, Inc. | Houston, TX 77043 | Oil Operator | Dec 2018 |
| 21373 | Northland Petroleum, LLC | Houston, TX 77043 | Oil Operator | Feb 2026 |
| 21374 | Northport Production Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Nov 2025 |
| 21375 | Northridge Exploration, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 21376 | Northridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 21377 | Northrop, Marilynne | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 21378 | Northshore Petroleum LLC | | Oil Operator | Feb 2009 |
| 21379 | Northstar Energy Corporation | Charleston, WV 25337-0000 | Oil & Gas Operator | Dec 2021 |
| 21380 | Northstar Gas Company Of Texas | Houston, TX 77057-2768 | Oil & Gas Operator | Jan 2026 |
| 21381 | Northstar Gas Company, Inc. | | Oil & Gas Operator | Jan 2016 |
| 21382 | Northstar Gas, Inc. | Orem, UT 84097-6360 | Oil & Gas Operator | Dec 2025 |
| 21383 | Northstar Gulfsands, LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2006 |
| 21384 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Sep 2025 |
| 21385 | Northstar Offshore Group, LLC | | Oil & Gas Operator | Apr 2020 |
| 21386 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 21387 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 21388 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 21389 | Northstar Resources Inc. | | Gas Operator | Nov 2025 |
| 21390 | Northstar Resources, LLC | Houston, TX 77018 | Oil & Gas Operator | Feb 2026 |
| 21391 | Northwest Airport Management, LP | Spring, TX 77379 | Gas Operator | Feb 2026 |
| 21392 | Northwest Disposal Corporation | Laverne, OK 73848-0504 | Oil & Gas Operator | Jul 2014 |
| 21393 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 21394 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 21395 | Northwest Exploration Co | Salt Lake City, UT 84108-0900 | Oil & Gas Operator | Sep 1991 |
| 21396 | Northwest Louisiana Production LLC | | Oil & Gas Operator | Dec 2024 |
| 21397 | Northwest Natural Gas Co | Albion, PA 16401-9998 | Oil & Gas Operator | Dec 1990 |
| 21398 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 21399 | Northwest Petroleum Inc. | | Oil & Gas Operator | Nov 2025 |
| 21400 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |