| 20501 | Nickerson, Royal | Clymer, NY 14724 | Gas Operator | Dec 2023 |
| 20502 | Nicki T Oil & Gas LLC | Midland, TX 79711 | Oil Operator | Jun 2025 |
| 20503 | Nickle Audrey O | Okmulgee, OK 74447-2823 | Oil & Gas Operator | Apr 2020 |
| 20504 | Nicklos Oil & Gas Co. | Houston, TX 77252 | Oil & Gas Operator | Nov 1986 |
| 20505 | Nicolaysen G G Jr | | Oil & Gas Operator | Dec 1995 |
| 20506 | Nicor Exploration | | Oil Operator | Jul 1993 |
| 20507 | Nicor Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 20508 | Nicor Production Company | Houston, TX 77002 | Oil & Gas Operator | May 1993 |
| 20509 | Nicor Supply Company | Golden, CO 80401 | Oil & Gas Operator | Jun 1993 |
| 20510 | Niedorf, Patrick Stephen | San Antonio, TX 78239 | Oil Operator | Jul 2001 |
| 20511 | Niefergold, Martin & Suzanne | Lawtons, NY 14091 | Gas Operator | Dec 2023 |
| 20512 | Niehage Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Feb 2025 |
| 20513 | Nielco, Inc. | Billings, MT 59103 | Oil & Gas Operator | Apr 2002 |
| 20514 | Nielson & Associates Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 20515 | Nielson Capital Partners LLC | Cody, WY 82414 | Oil & Gas Operator | Dec 2014 |
| 20516 | Nielson Enterpri | | Oil & Gas Operator | Sep 1987 |
| 20517 | Nieset Lawrence & Christopher | Helena, OH 43435 | Oil Operator | Dec 2024 |
| 20518 | Night Owl Well Service | Cairo, WV 26337-0000 | Oil & Gas Operator | Dec 2021 |
| 20519 | Nightengale Henr | | Gas Operator | Nov 1996 |
| 20520 | Nighthawk Production LLC | | Oil & Gas Operator | Jun 2018 |
| 20521 | Nijean, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Feb 2012 |
| 20522 | Nimrod Petroleum Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Dec 2002 |
| 20523 | Nine Point Energy, LLC | | Oil & Gas Operator | Oct 2021 |
| 20524 | Nineveh Corp. | Dallas, TX 75208 | Oil & Gas Operator | Jun 2025 |
| 20525 | Niobrara Illuminating Gas Associates LLC | | Oil & Gas Operator | Oct 2009 |
| 20526 | Nip-N-Tuck Minerals, Inc. | | Gas Operator | Feb 1988 |
| 20527 | Nippon Oil Exploration USA LTD | | Oil & Gas Operator | Dec 2010 |
| 20528 | Nisrol, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2018 |
| 20529 | Nitcher, Benton L. | Wellsville, KS 66092 | Oil & Gas Operator | Dec 1995 |
| 20530 | Nitro Energy, Inc. | | Gas Operator | Dec 2005 |
| 20531 | Nitro Oil & Gas, LLC | Cuero, TX 77954 | Oil & Gas Operator | Jun 2025 |
| 20532 | Nitro Petroleum Inc | Phoenix, AZ 85016-4599 | Oil & Gas Operator | May 2020 |
| 20533 | Nitro-Lift/Ok Manufacturing, LLC | | Oil Operator | Jun 2025 |
| 20534 | Nitschke, Dan E. | Henrietta, TX 76365 | Oil & Gas Operator | Jun 2025 |
| 20535 | Nivens Productions LLC | Coyle, OK 73027-9785 | Oil & Gas Operator | Aug 2024 |
| 20536 | Nix, Tommy | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 20537 | Nixon Properties Inc | Tulsa, OK 74104 | Oil & Gas Operator | Aug 2023 |
| 20538 | Nixon R P Operat | | Oil Operator | Aug 1995 |
| 20539 | Nizen, Stanley | FT Stockton, TX 79735 | Oil & Gas Operator | May 2002 |
| 20540 | Nja Operating LLC | Perryton, TX 79070 | Oil & Gas Operator | Jun 2025 |
| 20541 | Nject Disposal LLC | Houston, TX 77027 | Oil Operator | Mar 2017 |
| 20542 | NJL Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Feb 2007 |
| 20543 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |
| 20544 | NKC Energy, LLC | Bruceville, TX 76630 | Oil Operator | Jun 2025 |
| 20545 | NLC Newstead Holdings LLC | Akron, NY 14001 | Gas Operator | Dec 2023 |
| 20546 | NM&O Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 20547 | NMR Energy LLC | Houston, TX 77063 | Oil & Gas Operator | Jun 2025 |
| 20548 | NMT Oil Company Inc. | | Oil & Gas Operator | Apr 2025 |
| 20549 | Nne Resources LLC | Charleston, WV 25301 | Oil & Gas Operator | Dec 2021 |
| 20550 | Nnogc Exploration & Production, LLC | Window Rock, AZ 86515 | Oil & Gas Operator | Apr 2025 |
| 20551 | Noah, Calvin | Valley Center, KS 67147 | Oil Operator | Oct 2010 |
| 20552 | Noarko Resources | | Oil & Gas Operator | Mar 1990 |
| 20553 | Nobbs, Gary H. And Bosinski, Kathy | Eden, NY 14057 | Gas Operator | Dec 2023 |
| 20554 | Nobel Petroleum USA Inc. | League City, TX 77573 | Oil Operator | Jun 2025 |
| 20555 | Noble & Cantrell Expl. Co., Inc. | Winnsboro, TX 75494 | Oil & Gas Operator | Aug 2006 |
| 20556 | Noble Drilling Corp Expl Div | Houston, TX 77042 | Oil & Gas Operator | Feb 1992 |
| 20557 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Jun 2025 |
| 20558 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Jun 2025 |
| 20559 | Noble Exploration, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Aug 2003 |
| 20560 | Noble Gas Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1997 |
| 20561 | Noble Oil Corp | Columbus, OH 43229 | Oil & Gas Operator | Dec 1996 |
| 20562 | Noble Operating Company Inc | Garden City, KS 67846 | Oil & Gas Operator | Sep 2014 |
| 20563 | Noble Operating, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Sep 2013 |
| 20564 | Noble Petroleum LLC | Lower Salem, OH 45745-9648-9648 | Oil & Gas Operator | Dec 2024 |
| 20565 | Noble Petroleum, Inc. | Wichita, KS 67205 | Oil Operator | Sep 2013 |
| 20566 | Noble Producing Company Inc. | Dallas, TX 75244 | Oil & Gas Operator | Mar 1996 |
| 20567 | Noble Resources Inc | Mannford, OK 74044 | Oil & Gas Operator | Mar 2025 |
| 20568 | Noble, Alton L | Westfield, NY 14787 | Gas Operator | Dec 2023 |
| 20569 | Nobleson Operating, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Jun 1996 |
| 20570 | Noc | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 2020 |
| 20571 | Noco Investment Company Inc | Tulsa, OK 74159-0470 | Oil & Gas Operator | Mar 2005 |
| 20572 | Nodding Donkey Production | Pampa, TX 79065 | Oil & Gas Operator | Jun 2025 |
| 20573 | Nodding Donkey Resources LLC | Oklahoma City, OK 73112 | Oil Operator | Mar 2025 |
| 20574 | Noe And Woods, Et Al | | Gas Operator | Jan 2008 |
| 20575 | Noe, T. C. Oil Acct. | Selman City, TX 75689 | Oil & Gas Operator | May 1996 |
| 20576 | Noel Operating, Inc. | Huntsville, TX 77340 | Oil & Gas Operator | Oct 2000 |
| 20577 | Noex, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 1998 |
| 20578 | Nog Production & Operating LLC | Goliad, TX 77963 | Oil & Gas Operator | Jun 2025 |
| 20579 | Nogp Operating Company Inc | Frisco, TX 75033 | Oil & Gas Operator | Mar 2025 |
| 20580 | Noir-Blanc | Russell, KS 67665 | Oil Operator | May 1992 |
| 20581 | Nokota Energy Corporation | Bakersfield, CA 93313 | Oil Operator | Jun 2025 |
| 20582 | Nokusu, LTD. | Dallas, TX 75231 | Oil & Gas Operator | Sep 2008 |
| 20583 | Nolen Oil & Gas | Beeville, TX 78102 | Oil & Gas Operator | Jun 2025 |
| 20584 | Nolen, Charles R. | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2006 |
| 20585 | Nolin Rural Electric Coop | Elizabethtown, KY 42701 | Gas Operator | Dec 2023 |
| 20586 | Nolt, Leonard R. And Marian M. Nolt | Dundee, NY 14837 | Gas Operator | Dec 2023 |
| 20587 | Nolte, Mike E. | Longview, TX 75606 | Oil & Gas Operator | Jun 1995 |
| 20588 | Nolte, Mike E., Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2006 |
| 20589 | Nolteco, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jun 2025 |
| 20590 | Nomeco Oil & Gas Co. | Jackson, MI 49204 | Oil & Gas Operator | Dec 1994 |
| 20591 | Nomoc Oil Company Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2006 |
| 20592 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 20593 | Nondorf Oil & Gas Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2008 |
| 20594 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Apr 2025 |
| 20595 | Noonday Exploration, LLC | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 20596 | Nooner Cynthia | Ratliff City, OK 73481 | Oil Operator | Apr 2025 |
| 20597 | Nor-Am Exploration | | Oil Operator | Jun 1981 |
| 20598 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 20599 | Nora Company | Pampa, TX 79065 | Oil & Gas Operator | Jun 2025 |
| 20600 | Noram Field Services Corp. | | Oil Operator | Apr 1999 |