| 20401 | North Texas Plugging, LLC | Denton, TX 76205 | Oil & Gas Operator | Nov 2024 |
| 20402 | North Valley Gaswell Services | | Gas Operator | Aug 2024 |
| 20403 | North Valley Oil & Gas Co. | | Oil & Gas Operator | Dec 1996 |
| 20404 | Northam Oil Company Inc | Ada, OK 74820-3334 | Oil & Gas Operator | Feb 2024 |
| 20405 | Northamerican Service Group | Katy, TX 77449 | Oil & Gas Operator | Nov 2024 |
| 20406 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 20407 | Northbrook Oil & Gas Company | Norman, OK 73070-4916 | Oil & Gas Operator | Jun 2016 |
| 20408 | Northcoast Oil Company | | Oil & Gas Operator | Mar 2009 |
| 20409 | Northcote Cleveland | Borger, TX 79008 | Oil & Gas Operator | Aug 2024 |
| 20410 | Northcott Exploration Co. Inc. | | Oil & Gas Operator | Dec 1987 |
| 20411 | Northcutt Production | Bangs, TX 76823 | Oil & Gas Operator | Nov 2024 |
| 20412 | Northeast Natural Energy LLC | Charleston, WV 25301-2719 | Oil & Gas Operator | Sep 2024 |
| 20413 | Northeast Resources | | Oil & Gas Operator | Jan 1992 |
| 20414 | Northeast Shelf LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jun 2017 |
| 20415 | Northeast Texas Production Co. | Marshall, TX 75671 | Oil & Gas Operator | Nov 2024 |
| 20416 | Northeastern Energy | Warren, OH 44484 | Oil & Gas Operator | Dec 1991 |
| 20417 | Northeastern Energy Corp | | Oil & Gas Operator | Dec 2015 |
| 20418 | Northeastern Opr Co Inc | Shelocta, PA 15774-2346 | Gas Operator | Dec 2023 |
| 20419 | Northern Energy Devel. Co. | | Gas Operator | Dec 1995 |
| 20420 | Northern Energy Management | | Oil & Gas Operator | Nov 2019 |
| 20421 | Northern Gas Pro | | Gas Operator | Jun 1994 |
| 20422 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 20423 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Jul 2024 |
| 20424 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 20425 | Northern Michigan Oil & Gas Corporation | | Oil & Gas Operator | May 2024 |
| 20426 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 20427 | Northern Natural Gas Producing | | Gas Operator | Jan 1991 |
| 20428 | Northern Oil Production, Inc. | Bozeman, MT 59718 | Oil & Gas Operator | Sep 2024 |
| 20429 | Northern Pacific Oil And Gas Incorporated | Houston, TX 77024 | Oil & Gas Operator | Dec 2022 |
| 20430 | Northern Processors Inc | The Woodlands, TX 77387-9385-9385 | Oil & Gas Operator | Sep 2010 |
| 20431 | Northern Producing LLC | Shelby, MT 59474 | Oil Operator | Aug 2024 |
| 20432 | Northern Production Co | Gillette, WY 82717 | Oil & Gas Operator | Apr 2013 |
| 20433 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 20434 | Northfield Enterprises | Bryan, TX 77805 | Oil & Gas Operator | Dec 1993 |
| 20435 | Northfield Enterprises, Inc. | Bryan, TX 77805 | Oil & Gas Operator | Nov 2024 |
| 20436 | Northfork Exploration LLC | Electra, TX 76360 | Oil Operator | Nov 2024 |
| 20437 | Northla Productions, LLC | | Oil & Gas Operator | Jul 2024 |
| 20438 | Northland Holdings, Inc. | Calgary, AB T2J 7H2 | Gas Operator | May 2017 |
| 20439 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |
| 20440 | Northland Petroleum, Inc. | Houston, TX 77043 | Oil Operator | Dec 2018 |
| 20441 | Northland Petroleum, LLC | Houston, TX 77043 | Oil Operator | Nov 2024 |
| 20442 | Northport Production Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Sep 2024 |
| 20443 | Northridge Exploration, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 20444 | Northridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 20445 | Northrop, Marilynne | Westfield, NY 14787 | Gas Operator | Dec 2023 |
| 20446 | Northshore Petroleum LLC | | Oil Operator | Feb 2009 |
| 20447 | Northstar Energy Corporation | Charleston, WV 25337-0000 | Oil & Gas Operator | Dec 2021 |
| 20448 | Northstar Energy LLC | | Gas Operator | Sep 2020 |
| 20449 | Northstar Gas Company Inc | | Oil & Gas Operator | Jan 2016 |
| 20450 | Northstar Gas Company Of Texas | Houston, TX 77057-2768 | Oil & Gas Operator | Jan 2016 |
| 20451 | Northstar Gulfsands, LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2006 |
| 20452 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Jul 2024 |
| 20453 | Northstar Offshore Group, LLC | | Oil & Gas Operator | Apr 2020 |
| 20454 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 20455 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 20456 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 20457 | Northwest Airport Management, LP | Spring, TX 77379 | Gas Operator | Nov 2024 |
| 20458 | Northwest Disposal Corporation | Laverne, OK 73848-0504 | Oil & Gas Operator | Jul 2014 |
| 20459 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 20460 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 20461 | Northwest Exploration Co | Salt Lake City, UT 84108-0900 | Oil & Gas Operator | Sep 1991 |
| 20462 | Northwest Natural Gas Co | Albion, PA 16401-9998 | Oil & Gas Operator | Dec 1990 |
| 20463 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 20464 | Northwest Petroleum Inc. | | Oil & Gas Operator | Aug 2024 |
| 20465 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 20466 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 20467 | Northwestern Corporation | Butte, MT 59701 | Oil & Gas Operator | Sep 2024 |
| 20468 | Northwestern Energy, LLC | Butte, MT 59701 | Oil & Gas Operator | Dec 2004 |
| 20469 | Northwestern Inc | East Brady, PA 16028 | Gas Operator | Dec 2012 |
| 20470 | Northwestern Natural Gas | | Gas Operator | Aug 2000 |
| 20471 | Northwestern Production LLC | | Oil & Gas Operator | Apr 2024 |
| 20472 | Northwind Development Company | | Oil Operator | Oct 1995 |
| 20473 | Northwind Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1995 |
| 20474 | Northwind Oil & Gas, LLC | | Oil & Gas Operator | Nov 2019 |
| 20475 | Northwind Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | May 1998 |
| 20476 | Northwood Energy Corp | Columbus, OH 43221 | Oil & Gas Operator | Jun 2024 |
| 20477 | Norton Drilling Co. | Levelland, TX 79336 | Oil & Gas Operator | Nov 2001 |
| 20478 | Norton Frickey | Lakewood, CO 80215 | Oil & Gas Operator | Dec 2023 |
| 20479 | Norton Oil Company Inc | | Oil & Gas Operator | Mar 2008 |
| 20480 | Norvel Douglas Oil Inc. | H SPG NTL PK, AR 71909 | Oil Operator | Nov 2024 |
| 20481 | Norwes Industries, Inc. | | Oil & Gas Operator | Jun 2000 |
| 20482 | Norwood Energy, Inc | | Oil Operator | Dec 2015 |
| 20483 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 20484 | Norwood Oil Corp | Malakoff, TX 75148 | Oil & Gas Operator | Oct 1995 |
| 20485 | Norwood, A. N., Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 1997 |
| 20486 | Nosivad Oil, Inc. | Clyde, TX 79510 | Oil & Gas Operator | Nov 2024 |
| 20487 | Nossaman E Oil Inc | Del City, OK 73155-5449 | Oil Operator | Oct 2002 |
| 20488 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | Jul 2024 |
| 20489 | Notting Hill Energy LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Nov 2024 |
| 20490 | Nottis, David J. | West Valley, NY 14171 | Gas Operator | Dec 2023 |
| 20491 | Noumenon Corporation | Core, WV 26541-7072 | Oil & Gas Operator | Dec 2023 |
| 20492 | Nova Energy Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 20493 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 20494 | Nova Natural Res Corp | Denver, CO 80202 | Oil & Gas Operator | Nov 1989 |
| 20495 | Nova Petroleum Cororation | | Oil & Gas Operator | Mar 1987 |
| 20496 | Nova Petroleum Corp | Salt Lake City, UT 84147 | Oil & Gas Operator | Sep 1986 |
| 20497 | Novco Operating Company | Novice, TX 79538 | Oil & Gas Operator | Nov 2024 |
| 20498 | Novo Energy Resources | Houston, TX 77006 | Oil & Gas Operator | Nov 2024 |
| 20499 | Novo Exploration Corporation | Hurst, TX 76053 | Oil & Gas Operator | Jun 2020 |
| 20500 | Novo Oil & Gas Northern Delaware, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2024 |