| 20601 | North John M | Valatie, NY 12184-5005 | Gas Operator | Dec 2014 |
| 20602 | North Lake Resources LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 2025 |
| 20603 | North Lea Energy Co., LLC | Crossroads, NM 88114 | Oil & Gas Operator | Aug 2025 |
| 20604 | North Of River Sanitary District | | Oil & Gas Operator | Dec 2002 |
| 20605 | North Operating Company | Canton, TX 75103 | Oil & Gas Operator | Oct 2025 |
| 20606 | North Pacific Oil And Gas, Inc | Houston, TX 77042 | Oil Operator | Mar 2013 |
| 20607 | North Padre Explor. Venture LLC | Corpus Chrsti, TX 78473 | Oil & Gas Operator | May 2004 |
| 20608 | North Penn Gas Co | Allentown, PA 18101-1139 | Gas Operator | Dec 2000 |
| 20609 | North Plains Corp | Tulsa, OK 74137 | Oil & Gas Operator | Jun 2025 |
| 20610 | North Plains Energy, LLC | | Oil & Gas Operator | Jan 2016 |
| 20611 | North Plains Oil | | Oil Operator | Jul 1990 |
| 20612 | North Range Resources, LLC | | Oil & Gas Operator | Nov 2023 |
| 20613 | North Ridge Corporation | Duncanville, TX 75137 | Oil & Gas Operator | Oct 2025 |
| 20614 | North Ridge Energy Inc | Rome, OH 44085-9713 | Oil & Gas Operator | Dec 2024 |
| 20615 | North Shore Energy, L.L.C. | Austin, TX 78750 | Oil & Gas Operator | Oct 2025 |
| 20616 | North Shore Exploration & Prod LLC | Broomfield, CO 80021 | Oil & Gas Operator | Aug 2025 |
| 20617 | North Silo Resources LLC | Houston, TX 77055 | Oil & Gas Operator | Aug 2025 |
| 20618 | North Slope Borough | | Gas Operator | Aug 2025 |
| 20619 | North South Oil, LLC | Luling, TX 78648 | Oil Operator | Oct 2025 |
| 20620 | North Star Energy Resources LLC | Waynesburg, PA 15370-3833 | Gas Operator | Dec 2024 |
| 20621 | North Star Energy, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Jan 2010 |
| 20622 | North Star Exploration Company | Oklahoma City, OK 73116 | Oil & Gas Operator | May 2025 |
| 20623 | North Star Petroleum Corp. | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1993 |
| 20624 | North Texas Energy,Inc. | Dallas, TX 75252 | Oil Operator | Oct 2025 |
| 20625 | North Texas Llano Operating Corp | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 20626 | North Texas Oil & Gas, LLC | Edmond, OK 73013 | Oil & Gas Operator | Oct 2025 |
| 20627 | North Texas Plugging, LLC | Denton, TX 76205 | Oil & Gas Operator | Oct 2025 |
| 20628 | North Texas Pure Gold, LLC | Graham, TX 76450 | Oil Operator | Sep 2008 |
| 20629 | North Valley Gaswell Services | | Gas Operator | Jul 2025 |
| 20630 | North Valley Oil & Gas Co. | | Oil & Gas Operator | Dec 1996 |
| 20631 | Northam Oil Company Inc | Ada, OK 74820-3334 | Oil & Gas Operator | Feb 2025 |
| 20632 | Northamerican Service Group | Katy, TX 77449 | Oil & Gas Operator | Oct 2025 |
| 20633 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 20634 | Northbrook Oil & Gas Company | Norman, OK 73070-4916 | Oil & Gas Operator | Jun 2016 |
| 20635 | Northcoast Oil Company | | Oil & Gas Operator | Mar 2009 |
| 20636 | Northcote Cleveland LLC | Borger, TX 79008 | Oil & Gas Operator | Mar 2025 |
| 20637 | Northcott Exploration Co. Inc. | | Oil & Gas Operator | Dec 1987 |
| 20638 | Northcutt Production | Bangs, TX 76823 | Oil & Gas Operator | Oct 2025 |
| 20639 | Northeast Natural Energy LLC | Charleston, WV 25301-2719 | Oil & Gas Operator | Jul 2025 |
| 20640 | Northeast Resources | | Oil & Gas Operator | Jan 1992 |
| 20641 | Northeast Shelf Energy, L.L.C. | | Oil & Gas Operator | Jun 2017 |
| 20642 | Northeast Texas Production Co. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2025 |
| 20643 | Northeastern Energy | Warren, OH 44484 | Oil & Gas Operator | Dec 1991 |
| 20644 | Northeastern Energy Corp | | Oil & Gas Operator | Dec 2015 |
| 20645 | Northeastern Opr Co Inc | Shelocta, PA 15774-2346 | Gas Operator | Dec 2024 |
| 20646 | Northern Energy Devel. Co. | | Gas Operator | Dec 1995 |
| 20647 | Northern Energy Management | | Oil & Gas Operator | Nov 2019 |
| 20648 | Northern Gas Pro | | Gas Operator | Jun 1994 |
| 20649 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 20650 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Jun 2025 |
| 20651 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 20652 | Northern Michigan Oil & Gas Corporation | | Oil & Gas Operator | Aug 2025 |
| 20653 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 20654 | Northern Oil Production, Inc. | Bozeman, MT 59718 | Oil & Gas Operator | Jul 2025 |
| 20655 | Northern Pacific Oil And Gas Incorporated | Houston, TX 77024 | Oil & Gas Operator | Dec 2022 |
| 20656 | Northern Processors Inc | The Woodlands, TX 77387-9385 | Oil & Gas Operator | Sep 2010 |
| 20657 | Northern Producing LLC | Shelby, MT 59474 | Oil Operator | Jul 2025 |
| 20658 | Northern Production Co | Gillette, WY 82717 | Oil & Gas Operator | Apr 2013 |
| 20659 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 20660 | Northfield Enterprises | Bryan, TX 77805 | Oil & Gas Operator | Dec 1993 |
| 20661 | Northfield Enterprises, Inc. | Bryan, TX 77805 | Oil & Gas Operator | Oct 2025 |
| 20662 | Northfork Exploration LLC | Electra, TX 76360 | Oil Operator | Oct 2025 |
| 20663 | Northla Productions, LLC | | Oil & Gas Operator | Dec 2024 |
| 20664 | Northland Holdings, Inc. | Calgary, AB T2J 7H2 | Gas Operator | May 2017 |
| 20665 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |
| 20666 | Northland Petroleum, Inc. | Houston, TX 77043 | Oil Operator | Dec 2018 |
| 20667 | Northland Petroleum, LLC | Houston, TX 77043 | Oil & Gas Operator | Oct 2025 |
| 20668 | Northport Production Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Jun 2025 |
| 20669 | Northridge Exploration, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 20670 | Northridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 20671 | Northrop, Marilynne | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 20672 | Northshore Petroleum LLC | | Oil Operator | Feb 2009 |
| 20673 | Northstar Energy Corporation | Charleston, WV 25337-0000 | Oil & Gas Operator | Dec 2021 |
| 20674 | Northstar Energy LLC | | Gas Operator | Sep 2020 |
| 20675 | Northstar Gas Company Inc | | Oil & Gas Operator | Jan 2016 |
| 20676 | Northstar Gas Company Of Texas | Houston, TX 77057-2768 | Oil & Gas Operator | Sep 2025 |
| 20677 | Northstar Gas, Inc. | Orem, UT 84097-6360 | Oil & Gas Operator | Sep 2025 |
| 20678 | Northstar Gulfsands, LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2006 |
| 20679 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Jun 2025 |
| 20680 | Northstar Offshore Group, LLC | | Oil & Gas Operator | Apr 2020 |
| 20681 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 20682 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 20683 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 20684 | Northstar Resources Inc. | | Gas Operator | Jul 2025 |
| 20685 | Northwest Airport Management, LP | Spring, TX 77379 | Gas Operator | Oct 2025 |
| 20686 | Northwest Disposal Corporation | Laverne, OK 73848-0504 | Oil & Gas Operator | Jul 2014 |
| 20687 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 20688 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 20689 | Northwest Exploration Co | Salt Lake City, UT 84108-0900 | Oil & Gas Operator | Sep 1991 |
| 20690 | Northwest Louisiana Production LLC | | Oil & Gas Operator | Dec 2024 |
| 20691 | Northwest Natural Gas Co | Albion, PA 16401-9998 | Oil & Gas Operator | Dec 1990 |
| 20692 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 20693 | Northwest Petroleum Inc. | | Oil & Gas Operator | Jul 2025 |
| 20694 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 20695 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 20696 | Northwestern Corporation | Butte, MT 59701 | Oil & Gas Operator | Jul 2025 |
| 20697 | Northwestern Energy, LLC | Butte, MT 59701 | Oil & Gas Operator | Dec 2004 |
| 20698 | Northwestern Inc | East Brady, PA 16028 | Gas Operator | Dec 2012 |
| 20699 | Northwestern Natural Gas | | Gas Operator | Aug 2000 |
| 20700 | Northwestern Production LLC | | Oil & Gas Operator | Apr 2024 |