| 20601 | Northeastern Energy | Warren, OH 44484 | Oil & Gas Operator | Dec 1991 |
| 20602 | Northeastern Energy Corp | | Oil & Gas Operator | Dec 2015 |
| 20603 | Northeastern Opr Co Inc | Shelocta, PA 15774-2346 | Gas Operator | Dec 2024 |
| 20604 | Northern Energy Devel. Co. | | Gas Operator | Dec 1995 |
| 20605 | Northern Energy Management | | Oil & Gas Operator | Nov 2019 |
| 20606 | Northern Gas Pro | | Gas Operator | Jun 1994 |
| 20607 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 20608 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Mar 2025 |
| 20609 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 20610 | Northern Michigan Oil & Gas Corporation | | Oil & Gas Operator | Dec 2024 |
| 20611 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 20612 | Northern Oil Production, Inc. | Bozeman, MT 59718 | Oil & Gas Operator | May 2025 |
| 20613 | Northern Pacific Oil And Gas Incorporated | Houston, TX 77024 | Oil & Gas Operator | Dec 2022 |
| 20614 | Northern Processors Inc | The Woodlands, TX 77387-9385 | Oil & Gas Operator | Sep 2010 |
| 20615 | Northern Producing LLC | Shelby, MT 59474 | Oil Operator | Apr 2025 |
| 20616 | Northern Production Co | Gillette, WY 82717 | Oil & Gas Operator | Apr 2013 |
| 20617 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 20618 | Northfield Enterprises | Bryan, TX 77805 | Oil & Gas Operator | Dec 1993 |
| 20619 | Northfield Enterprises, Inc. | Bryan, TX 77805 | Oil & Gas Operator | Jul 2025 |
| 20620 | Northfork Exploration LLC | Electra, TX 76360 | Oil Operator | Jul 2025 |
| 20621 | Northla Productions, LLC | | Oil & Gas Operator | Dec 2024 |
| 20622 | Northland Holdings, Inc. | Calgary, AB T2J 7H2 | Gas Operator | May 2017 |
| 20623 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |
| 20624 | Northland Petroleum, Inc. | Houston, TX 77043 | Oil Operator | Dec 2018 |
| 20625 | Northland Petroleum, LLC | Houston, TX 77043 | Oil & Gas Operator | Jul 2025 |
| 20626 | Northport Production Company | Oklahoma City, OK 73113 | Oil & Gas Operator | May 2025 |
| 20627 | Northridge Exploration, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2025 |
| 20628 | Northridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2025 |
| 20629 | Northrop, Marilynne | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 20630 | Northshore Petroleum LLC | | Oil Operator | Feb 2009 |
| 20631 | Northstar Energy Corporation | Charleston, WV 25337-0000 | Oil & Gas Operator | Dec 2021 |
| 20632 | Northstar Energy LLC | | Gas Operator | Sep 2020 |
| 20633 | Northstar Gas Company Inc | | Oil & Gas Operator | Jan 2016 |
| 20634 | Northstar Gas Company Of Texas | Houston, TX 77057-2768 | Oil & Gas Operator | Jun 2025 |
| 20635 | Northstar Gas, Inc. | Orem, UT 84097-6360 | Oil & Gas Operator | May 2025 |
| 20636 | Northstar Gulfsands, LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2006 |
| 20637 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Mar 2025 |
| 20638 | Northstar Offshore Group, LLC | | Oil & Gas Operator | Apr 2020 |
| 20639 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 20640 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 20641 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 20642 | Northstar Resources Inc. | | Gas Operator | Apr 2025 |
| 20643 | Northwest Airport Management, LP | Spring, TX 77379 | Gas Operator | Jul 2025 |
| 20644 | Northwest Disposal Corporation | Laverne, OK 73848-0504 | Oil & Gas Operator | Jul 2014 |
| 20645 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 20646 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 20647 | Northwest Exploration Co | Salt Lake City, UT 84108-0900 | Oil & Gas Operator | Sep 1991 |
| 20648 | Northwest Louisiana Production LLC | | Oil & Gas Operator | Dec 2024 |
| 20649 | Northwest Natural Gas Co | Albion, PA 16401-9998 | Oil & Gas Operator | Dec 1990 |
| 20650 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 20651 | Northwest Petroleum Inc. | | Oil & Gas Operator | Apr 2025 |
| 20652 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 20653 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 20654 | Northwestern Corporation | Butte, MT 59701 | Oil & Gas Operator | May 2025 |
| 20655 | Northwestern Energy, LLC | Butte, MT 59701 | Oil & Gas Operator | Dec 2004 |
| 20656 | Northwestern Inc | East Brady, PA 16028 | Gas Operator | Dec 2012 |
| 20657 | Northwestern Natural Gas | | Gas Operator | Aug 2000 |
| 20658 | Northwestern Production LLC | | Oil & Gas Operator | Apr 2024 |
| 20659 | Northwind Development Company | | Oil Operator | Oct 1995 |
| 20660 | Northwind Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1995 |
| 20661 | Northwind Oil & Gas, LLC | | Oil & Gas Operator | Nov 2019 |
| 20662 | Northwind Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | May 1998 |
| 20663 | Northwood Energy Corp | Columbus, OH 43221 | Oil & Gas Operator | Mar 2025 |
| 20664 | Norton Drilling Co. | Levelland, TX 79336 | Oil & Gas Operator | Nov 2001 |
| 20665 | Norton Frickey | Lakewood, CO 80215 | Oil & Gas Operator | Dec 2023 |
| 20666 | Norton Oil Co. | | Oil & Gas Operator | Jun 1984 |
| 20667 | Norvel Douglas Oil Inc. | H SPG NTL PK, AR 71909 | Oil Operator | Jul 2025 |
| 20668 | Norwes Industries, Inc. | | Oil & Gas Operator | Jun 2000 |
| 20669 | Norwood Energy, Inc | | Oil Operator | Dec 2015 |
| 20670 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 20671 | Norwood Oil Corp | Malakoff, TX 75148 | Oil & Gas Operator | Oct 1995 |
| 20672 | Norwood, A. N., Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 1997 |
| 20673 | Nosivad Oil, Inc. | Clyde, TX 79510 | Oil & Gas Operator | Jul 2025 |
| 20674 | Nossaman E Oil Inc | Del City, OK 73155-5449 | Oil Operator | Oct 2002 |
| 20675 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | Mar 2025 |
| 20676 | Notting Hill Energy LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Jul 2025 |
| 20677 | Nottis, David J. | West Valley, NY 14171 | Gas Operator | Dec 2024 |
| 20678 | Noumenon Corporation | Core, WV 26541-7072 | Oil & Gas Operator | Dec 2024 |
| 20679 | Nova Energy Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 20680 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 20681 | Nova Natural Res Corp | Denver, CO 80202 | Oil & Gas Operator | Nov 1989 |
| 20682 | Nova Petroleum Cororation | | Oil & Gas Operator | Mar 1987 |
| 20683 | Nova Petroleum Corp | Salt Lake City, UT 84147 | Oil & Gas Operator | Sep 1986 |
| 20684 | Novco Operating Company | Novice, TX 79538 | Oil & Gas Operator | Jul 2025 |
| 20685 | Novo Energy Resources | Houston, TX 77006 | Oil & Gas Operator | Jul 2025 |
| 20686 | Novo Exploration Corporation | Hurst, TX 76053 | Oil & Gas Operator | Jun 2020 |
| 20687 | Novo Oil & Gas Northern Delaware, LLC | Midland, TX 79701 | Oil & Gas Operator | May 2025 |
| 20688 | Novus Louisiana LLC | | Oil & Gas Operator | Feb 2006 |
| 20689 | Novus Oil & Gas, LP | Houston, TX 77042 | Oil & Gas Operator | Nov 2005 |
| 20690 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Jun 2025 |
| 20691 | Now Development Co., Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2017 |
| 20692 | Nowata Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1997 |
| 20693 | Nowata Petroleum Operating Co | Nowata, OK 74048-9617 | Oil Operator | Aug 2014 |
| 20694 | Noxxe | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2023 |
| 20695 | Noxxe Oil And Gas, LLC | Houston, TX 77269 | Oil & Gas Operator | Jul 2025 |
| 20696 | NP Energy Corporation | Englewood, CO 80111 | Oil & Gas Operator | Jun 1989 |
| 20697 | NP Resources, LLC | | Oil & Gas Operator | Aug 2022 |
| 20698 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Mar 2025 |
| 20699 | NRC Development, LLC | | Gas Operator | Nov 2002 |
| 20700 | NRD - Rein Resources, A General Partnership | Union, KY 41091 | Oil Operator | Mar 2025 |