| 20001 | Nineveh Corp. | Dallas, TX 75208 | Oil & Gas Operator | Jun 2026 |
| 20002 | Nip-N-Tuck Minerals, Inc. | | Gas Operator | Feb 1988 |
| 20003 | Nippon Oil Exploration USA LTD | | Oil & Gas Operator | Dec 2010 |
| 20004 | Nisrol, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2018 |
| 20005 | Nitcher, Benton L. | Wellsville, KS 66092 | Oil & Gas Operator | Dec 1995 |
| 20006 | Nitro Energy, Inc. | | Gas Operator | Dec 2005 |
| 20007 | Nitro Oil & Gas, LLC | Cuero, TX 77954 | Oil & Gas Operator | Jun 2026 |
| 20008 | Nitro Petroleum Inc | Phoenix, AZ 85016-4599 | Oil & Gas Operator | May 2020 |
| 20009 | Nitro-Lift/Oklahoma Manufacturing LLC | Mill Creek, OK 74856 | Oil Operator | Jun 2026 |
| 20010 | Nitschke, Dan E. | Henrietta, TX 76365 | Oil & Gas Operator | Jun 2026 |
| 20011 | Nivens Productions LLC | Coyle, OK 73027-9785 | Oil & Gas Operator | Aug 2024 |
| 20012 | Nix, Tommy | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 20013 | Nixon Properties Inc | Tulsa, OK 74104 | Oil & Gas Operator | Aug 2023 |
| 20014 | Nixon R P Operat | | Oil Operator | Aug 1995 |
| 20015 | Nizen, Stanley | FT Stockton, TX 79735 | Oil & Gas Operator | May 2002 |
| 20016 | Nja Operating LLC | Perryton, TX 79070 | Oil & Gas Operator | Jun 2026 |
| 20017 | Nject Disposal LLC | Houston, TX 77027 | Oil Operator | Mar 2017 |
| 20018 | NJL Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Feb 2007 |
| 20019 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |
| 20020 | NKC Energy, LLC | Bruceville, TX 76630 | Oil Operator | Jun 2026 |
| 20021 | NLC Newstead Holdings LLC | Akron, NY 14001 | Gas Operator | Dec 2024 |
| 20022 | NM&O Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 20023 | NMR Energy LLC | Houston, TX 77063 | Oil & Gas Operator | Jun 2026 |
| 20024 | NMT Oil Company Inc. | | Oil & Gas Operator | Mar 2026 |
| 20025 | Nnogc Exploration & Production, LLC | Window Rock, AZ 86515 | Oil & Gas Operator | Apr 2026 |
| 20026 | Noah, Calvin | Valley Center, KS 67147 | Oil Operator | Oct 2010 |
| 20027 | Noarko Resources | | Oil & Gas Operator | Mar 1990 |
| 20028 | Nobbs, Gary H. And Bosinski, Kathy | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 20029 | Nobel Petroleum USA Inc. | League City, TX 77573 | Oil Operator | Jun 2026 |
| 20030 | Noble & Cantrell Expl. Co., Inc. | Winnsboro, TX 75494 | Oil & Gas Operator | Aug 2006 |
| 20031 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Jun 2026 |
| 20032 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Jun 2026 |
| 20033 | Noble Exploration, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Aug 2003 |
| 20034 | Noble Gas Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1997 |
| 20035 | Noble Oil Corp | Columbus, OH 43229 | Oil & Gas Operator | Dec 1996 |
| 20036 | Noble Operating Company Inc | Garden City, KS 67846 | Oil & Gas Operator | Sep 2014 |
| 20037 | Noble Operating, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Sep 2013 |
| 20038 | Noble Petroleum LLC | Lower Salem, OH 45745-9648 | Oil & Gas Operator | Dec 2025 |
| 20039 | Noble Petroleum, Inc. | Wichita, KS 67205 | Oil Operator | Sep 2013 |
| 20040 | Noble Producing Company Inc. | Dallas, TX 75244 | Oil & Gas Operator | Mar 1996 |
| 20041 | Noble Resources Inc | Mannford, OK 74044 | Oil & Gas Operator | Mar 2026 |
| 20042 | Noble, Alton L | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 20043 | Nobleson Operating, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Jun 1996 |
| 20044 | Noc | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 2020 |
| 20045 | Noco Investment Company Inc | Tulsa, OK 74159-0470 | Oil & Gas Operator | Mar 2005 |
| 20046 | Nodding Donkey Production | Pampa, TX 79065 | Oil & Gas Operator | Jun 2026 |
| 20047 | Noe And Woods, Et Al | | Gas Operator | Jan 2008 |
| 20048 | Noe, T. C. Oil Acct. | Selman City, TX 75689 | Oil & Gas Operator | May 1996 |
| 20049 | Noel Operating, Inc. | Huntsville, TX 77340 | Oil & Gas Operator | Oct 2000 |
| 20050 | Noex, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 1998 |
| 20051 | Nog Production & Operating LLC | Goliad, TX 77963 | Oil & Gas Operator | Jun 2026 |
| 20052 | Nogp Operating Company Inc | Tomball, TX 77377 | Oil & Gas Operator | Mar 2026 |
| 20053 | Noir-Blanc | Russell, KS 67665 | Oil Operator | May 1992 |
| 20054 | Nokota Energy Corporation | Bakersfield, CA 93313 | Oil Operator | Jun 2026 |
| 20055 | Nokusu, LTD. | Dallas, TX 75231 | Oil & Gas Operator | Sep 2008 |
| 20056 | Nolen Oil & Gas | Beeville, TX 78102 | Oil & Gas Operator | Jun 2026 |
| 20057 | Nolen, Charles R. | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2006 |
| 20058 | Nolin Rural Electric Coop | Elizabethtown, KY 42701 | Gas Operator | Dec 2024 |
| 20059 | Nolt, Leonard R. And Marian M. Nolt | Dundee, NY 14837 | Gas Operator | Dec 2024 |
| 20060 | Nolte, Mike E., Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2006 |
| 20061 | Nolteco, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jun 2026 |
| 20062 | Nomeco Oil & Gas Co. | Jackson, MI 49204 | Oil & Gas Operator | Dec 1994 |
| 20063 | Nomoc Oil Company Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2006 |
| 20064 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 20065 | Nondorf Oil & Gas Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2008 |
| 20066 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Mar 2026 |
| 20067 | Noonday Exploration, LLC | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 20068 | Nooner Cynthia | Ratliff City, OK 73481 | Oil Operator | Mar 2026 |
| 20069 | Nor East Investment Corporation | N Richlnd HLS, TX 76182 | Oil Operator | Jun 2026 |
| 20070 | Nor-Am Exploration | | Oil Operator | Jun 1981 |
| 20071 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 20072 | Nora Company | Pampa, TX 79065 | Oil & Gas Operator | Jun 2026 |
| 20073 | Noram Field Services Corp. | | Oil Operator | Apr 1999 |
| 20074 | Noram Operating Company | Houston, TX 77002 | Oil Operator | Oct 1999 |
| 20075 | Noramco Production, LLC | Midland, TX 79710 | Oil & Gas Operator | Jan 2023 |
| 20076 | Norbay Oil Corp. | | Oil & Gas Operator | Dec 1999 |
| 20077 | Norbert J Baumgart | Warren, PA 16365-3403 | Oil & Gas Operator | Dec 2009 |
| 20078 | Norcen Energy Inc | | Oil Operator | Dec 1989 |
| 20079 | Norcen Explorer, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 1998 |
| 20080 | Norco Development, Inc. | | Oil Operator | Jul 1994 |
| 20081 | Nordan & Company | San Antonio, TX 78205 | Oil & Gas Operator | Jun 2004 |
| 20082 | Nordan Oil & Gas Corporation | Abilene, TX 79604 | Oil & Gas Operator | Feb 2018 |
| 20083 | Nordan Trust, The | San Antonio, TX 78205 | Oil & Gas Operator | Nov 2003 |
| 20084 | Nordic Oil Company | | Oil & Gas Operator | Dec 1999 |
| 20085 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 20086 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Jun 2026 |
| 20087 | Nordstrand/Galoostian Oil & Gas | Houston, TX 77056 | Oil Operator | Mar 1998 |
| 20088 | Norexco Inc. | | Oil & Gas Operator | Aug 1988 |
| 20089 | Norgas Energy | Lakehills, TX 78063 | Oil & Gas Operator | Jun 2026 |
| 20090 | Norman Brothers Tank Truck Inc | Pauls Valley, OK 73075 | Oil & Gas Operator | May 2020 |
| 20091 | Norman Kenneth W | Sasakwa, OK 74867-0086 | Oil Operator | Oct 2017 |
| 20092 | Norman L Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 20093 | Norman Oil Corporation | Abilene, TX 79608 | Oil & Gas Operator | Mar 2000 |
| 20094 | Norman Production Company | Chandler, OK 74834-8538 | Oil & Gas Operator | May 2015 |
| 20095 | Norman, C. D. | Irving, TX 75015 | Oil & Gas Operator | Mar 2008 |
| 20096 | Nornew Inc | Houston, TX 77063-2140 | Oil & Gas Operator | Dec 2008 |
| 20097 | Norris, Robert E. III | Savannah, NY 13146 | Gas Operator | Dec 2024 |
| 20098 | Norse Energy Corp USA | | Gas Operator | Dec 2011 |
| 20099 | Norstar Development | Madras, OR 97741 | Oil Operator | Nov 2018 |
| 20100 | Norstar Petroleu | | Oil & Gas Operator | Dec 1996 |