| 20501 | Norbert J Baumgart | Warren, PA 16365-3403 | Oil & Gas Operator | Dec 2009 |
| 20502 | Norcen Energy Inc | | Oil Operator | Dec 1989 |
| 20503 | Norcen Explorer, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 1998 |
| 20504 | Norco Development, Inc. | | Oil Operator | Jul 1994 |
| 20505 | Nordan & Company | San Antonio, TX 78205 | Oil & Gas Operator | Jun 2004 |
| 20506 | Nordan Oil & Gas Corporation | Abilene, TX 79604 | Oil & Gas Operator | Feb 2018 |
| 20507 | Nordan Trust, The | San Antonio, TX 78205 | Oil & Gas Operator | Nov 2003 |
| 20508 | Nordic Oil Company | | Oil & Gas Operator | Dec 1999 |
| 20509 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 20510 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Jul 2025 |
| 20511 | Nordstrand/Galoostian Oil & Gas | Houston, TX 77056 | Oil Operator | Mar 1998 |
| 20512 | Norexco Inc. | | Oil & Gas Operator | Aug 1988 |
| 20513 | Norgas Energy | Lakehills, TX 78063 | Oil & Gas Operator | Jul 2025 |
| 20514 | Norman Brothers Tank Truck Inc | Pauls Valley, OK 73075 | Oil & Gas Operator | May 2020 |
| 20515 | Norman Kenneth W | Sasakwa, OK 74867-0086 | Oil Operator | Oct 2017 |
| 20516 | Norman L & Loretta E Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 20517 | Norman L Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 20518 | Norman Oil Corporation | Abilene, TX 79608 | Oil & Gas Operator | Mar 2000 |
| 20519 | Norman Production Company | Chandler, OK 74834-8538 | Oil & Gas Operator | May 2015 |
| 20520 | Norman, C. D. | Irving, TX 75015 | Oil & Gas Operator | Mar 2008 |
| 20521 | Nornew Inc | Houston, TX 77063-2140 | Oil & Gas Operator | Dec 2008 |
| 20522 | Norris, Robert E. III | Savannah, NY 13146 | Gas Operator | Dec 2024 |
| 20523 | Norse Energy Corp USA | | Gas Operator | Dec 2011 |
| 20524 | Norstar Development | Madras, OR 97741 | Oil Operator | Nov 2018 |
| 20525 | Norstar Petroleu | | Oil & Gas Operator | Dec 1996 |
| 20526 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2025 |
| 20527 | Nortex Energy, Inc. | Muenster, TX 76252 | Oil Operator | Jul 2025 |
| 20528 | Nortex Gas & Oil Co | Tulsa, OK 74135 | Oil & Gas Operator | Sep 1993 |
| 20529 | Nortex Oil & Gas, Inc. | | Oil Operator | Feb 1994 |
| 20530 | Nortex Production Co., LLC | Wichita Falls, TX 76310 | Oil Operator | Jul 2025 |
| 20531 | North Amer Oil & Gas Drilling Co Inc | Pleasantville, PA 16341-0197 | Oil Operator | Dec 1999 |
| 20532 | North Amer Oil Exp Inc | Trenton, OH 45067 | Oil Operator | Dec 2024 |
| 20533 | North Amer Petroleum Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2000 |
| 20534 | North American D | | Oil & Gas Operator | Sep 1986 |
| 20535 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 20536 | North American Drilling Corp | Plano, TX 75093 | Oil & Gas Operator | Jul 2025 |
| 20537 | North American Energy Inc | Duncan, OK 73533-9604 | Oil & Gas Operator | Nov 2000 |
| 20538 | North American Exploration Co. | Abilene, TX 79602 | Oil & Gas Operator | Apr 1998 |
| 20539 | North American Petroleum Inc | Scottsdale, AZ 85262 | Oil & Gas Operator | Dec 2024 |
| 20540 | North American Prod Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1998 |
| 20541 | North American Reserve Corp. | Houston, TX 77060 | Oil & Gas Operator | Oct 2010 |
| 20542 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 20543 | North American Royalties, Inc. | Chattanooga, TN 37408 | Oil & Gas Operator | Oct 2001 |
| 20544 | North American Technical Trading Company, Inc. | Oakbrook Terrace, IL 60181 | Oil Operator | Jan 2011 |
| 20545 | North Bound Exploration Co | Pauls Valley, OK 73075-0863 | Oil & Gas Operator | Jan 2018 |
| 20546 | North Cambria Fuel Co | Blairsville, PA 15717-7961 | Gas Operator | Dec 2008 |
| 20547 | North Canadian Production LLC | Okemah, OK 74859 | Oil Operator | Apr 2025 |
| 20548 | North Central Casing Pullers,Inc | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 20549 | North Central Oil Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 20550 | North Central Oil Corp., Et Al | | Oil & Gas Operator | Mar 1977 |
| 20551 | North Central Texas Energy LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 20552 | North Coast Petroleum Inc | Hiram, OH 44234 | Oil & Gas Operator | Dec 1993 |
| 20553 | North Country Energy LLC | Amarillo, TX 79159 | Oil & Gas Operator | Jul 2025 |
| 20554 | North East Fuel Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2015 |
| 20555 | North East Gas & Oil Co | Scottsville, VA 24590-3962 | Oil & Gas Operator | Dec 2013 |
| 20556 | North Finn LLC | Casper, WY 82605 | Oil & Gas Operator | Jun 2025 |
| 20557 | North Fork Operating LP | Mustang, OK 73064 | Oil & Gas Operator | Jul 2025 |
| 20558 | North Harmony Ventures, Inc. | Jamestown, NY 14701 | Oil & Gas Operator | Dec 2024 |
| 20559 | North John M | Valatie, NY 12184-5005 | Gas Operator | Dec 2014 |
| 20560 | North Lake Resources LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Jul 2025 |
| 20561 | North Lea Energy Co., LLC | Crossroads, NM 88114 | Oil & Gas Operator | Jan 2025 |
| 20562 | North Of River Sanitary District | | Oil & Gas Operator | Dec 2002 |
| 20563 | North Operating Company | Canton, TX 75103 | Oil & Gas Operator | Jul 2025 |
| 20564 | North Pacific Oil And Gas, Inc | Houston, TX 77042 | Oil Operator | Mar 2013 |
| 20565 | North Padre Explor. Venture LLC | Corpus Chrsti, TX 78473 | Oil & Gas Operator | May 2004 |
| 20566 | North Penn Gas Co | Allentown, PA 18101-1139 | Gas Operator | Dec 2000 |
| 20567 | North Plains Corp | Tulsa, OK 74137 | Oil & Gas Operator | Mar 2025 |
| 20568 | North Plains Energy, LLC | | Oil & Gas Operator | Jan 2016 |
| 20569 | North Plains Oil | | Oil Operator | Jul 1990 |
| 20570 | North Range Resources, LLC | | Oil & Gas Operator | Nov 2023 |
| 20571 | North Ridge Corporation | Duncanville, TX 75137 | Oil & Gas Operator | Jul 2025 |
| 20572 | North Ridge Energy Inc | Rome, OH 44085-9713 | Oil & Gas Operator | Dec 2024 |
| 20573 | North Shore Energy, L.L.C. | Austin, TX 78750 | Oil & Gas Operator | Jul 2025 |
| 20574 | North Shore Exploration & Prod LLC | Broomfield, CO 80021 | Oil & Gas Operator | May 2025 |
| 20575 | North Silo Resources LLC | Houston, TX 77055 | Oil & Gas Operator | May 2025 |
| 20576 | North Slope Borough | | Gas Operator | Jun 2025 |
| 20577 | North South Oil, LLC | Luling, TX 78648 | Oil Operator | Jul 2025 |
| 20578 | North Star Energy Resources LLC | Waynesburg, PA 15370-3833 | Gas Operator | Dec 2024 |
| 20579 | North Star Energy, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Jan 2010 |
| 20580 | North Star Exploration Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Mar 2025 |
| 20581 | North Star Petroleum Corp. | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1993 |
| 20582 | North Texas Energy,Inc. | Dallas, TX 75252 | Oil Operator | Jul 2025 |
| 20583 | North Texas Llano Operating Corp | Dallas, TX 75225 | Oil & Gas Operator | Jul 2025 |
| 20584 | North Texas Oil & Gas, LLC | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 20585 | North Texas Plugging, LLC | Denton, TX 76205 | Oil & Gas Operator | Jul 2025 |
| 20586 | North Texas Pure Gold, LLC | Graham, TX 76450 | Oil Operator | Sep 2008 |
| 20587 | North Valley Gaswell Services | | Gas Operator | Apr 2025 |
| 20588 | North Valley Oil & Gas Co. | | Oil & Gas Operator | Dec 1996 |
| 20589 | Northam Oil Company Inc | Ada, OK 74820-3334 | Oil & Gas Operator | Feb 2025 |
| 20590 | Northamerican Service Group | Katy, TX 77449 | Oil & Gas Operator | Jul 2025 |
| 20591 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 20592 | Northbrook Oil & Gas Company | Norman, OK 73070-4916 | Oil & Gas Operator | Jun 2016 |
| 20593 | Northcoast Oil Company | | Oil & Gas Operator | Mar 2009 |
| 20594 | Northcote Cleveland LLC | Borger, TX 79008 | Oil & Gas Operator | Mar 2025 |
| 20595 | Northcott Exploration Co. Inc. | | Oil & Gas Operator | Dec 1987 |
| 20596 | Northcutt Production | Bangs, TX 76823 | Oil & Gas Operator | Jul 2025 |
| 20597 | Northeast Natural Energy LLC | Charleston, WV 25301-2719 | Oil & Gas Operator | May 2025 |
| 20598 | Northeast Resources | | Oil & Gas Operator | Jan 1992 |
| 20599 | Northeast Shelf Energy, L.L.C. | | Oil & Gas Operator | Jun 2017 |
| 20600 | Northeast Texas Production Co. | Marshall, TX 75671 | Oil & Gas Operator | Jul 2025 |