| 1 | N & B Enterprise | | Oil Operator | Nov 1994 |
| 2 | N & B Enterprises, Inc. | Iola, KS 66749 | Oil & Gas Operator | Jan 2025 |
| 3 | N & B Oil And Gas LLC | Monahans, TX 79756 | Oil & Gas Operator | May 2025 |
| 4 | N & K Oil & Gas Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 1998 |
| 5 | N & N Oil | Somerset, OH 43783 | Oil & Gas Operator | Dec 2014 |
| 6 | N & N Oil LLC | Duncan, OK 73533 | Oil & Gas Operator | May 2023 |
| 7 | N & O Oil Co. | Imperial, TX 79743 | Oil & Gas Operator | May 2025 |
| 8 | N & P Enterprises | | Oil Operator | May 1997 |
| 9 | N & W Enterprises, Inc. | Fort Scott, KS 66701 | Oil Operator | Jan 2025 |
| 10 | N And B Exploration, Inc. | | Oil & Gas Operator | Jun 1993 |
| 11 | N C B Oil Company | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 12 | N Central Casing Pullers, Inc. | | Oil & Gas Operator | May 1994 |
| 13 | N Dale Nichols | Midland, TX 79703 | Oil & Gas Operator | Jun 2004 |
| 14 | N Eastern Oh O&G Exp Inc | Cleveland, OH 44106 | Oil & Gas Operator | Dec 1999 |
| 15 | N H Wheless Oil Company | Shreveport, LA 71101 | Gas Operator | Sep 2002 |
| 16 | N S P Operating Group LLC | El Campo, TX 77437 | Oil & Gas Operator | Aug 2021 |
| 17 | N-10 Exploration, LLC | Attica, KS 67009 | Oil & Gas Operator | Jan 2025 |
| 18 | N-A Energy LLC | Arvada, CO 80005 | Oil Operator | Dec 2024 |
| 19 | N-B Company Inco | | Oil & Gas Operator | Apr 1992 |
| 20 | N. A. Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Dec 2007 |
| 21 | N. B. Hunt | | Oil & Gas Operator | May 1981 |
| 22 | N. E. Loomis | | Oil Operator | Oct 1986 |
| 23 | N. E. Operating Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2013 |
| 24 | N. J. Pardue | | Oil & Gas Operator | Jul 1994 |
| 25 | N. R. Price | | Oil & Gas Operator | Nov 1983 |
| 26 | N. T. Rutledge Oil Co. | | Oil Operator | Jan 1989 |
| 27 | N. W. Corporation | | Gas Operator | Jan 1989 |
| 28 | N.F. Producers, Inc. | Berthoud, CO 80513 | Oil Operator | Jan 2025 |
| 29 | N.L.S., Inc. | Kimberling City, MO 65686 | Oil & Gas Operator | Aug 2016 |
| 30 | Nabers, Lynn | Austin, TX 78751 | Gas Operator | Jul 2010 |
| 31 | Nabob Production Company | Amarillo, TX 79105 | Gas Operator | Dec 1991 |
| 32 | Nabors Drilling Company, Inc. | | Oil & Gas Operator | Sep 1977 |
| 33 | Nabors Well Services LTD | Houston, TX 77067-4536 | Oil Operator | Apr 2011 |
| 34 | Nabors-Johnson Prod Co., Inc. | | Oil & Gas Operator | Dec 2020 |
| 35 | Nacatosh Gas Incorporated | | Oil & Gas Operator | Aug 2013 |
| 36 | Naco Production | Midland, TX 79708 | Oil & Gas Operator | Aug 2003 |
| 37 | Nacogdoches Oil & Gas Inc | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2025 |
| 38 | Nacogdoches Oil & Gas, LLC | Nacogdoches, TX 75961 | Oil & Gas Operator | Dec 2017 |
| 39 | Nadcf Recovery Group, Inc. | Chapin, SC 29036 | Oil & Gas Operator | May 2025 |
| 40 | Nadel & Gussman-Jetta Oper. Co. | | Oil & Gas Operator | Mar 2012 |
| 41 | Nadel And Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 42 | Nadel And Gussman Heyco, LLC | Roswell, NM 88202 | Oil & Gas Operator | Dec 2014 |
| 43 | Nadel And Gussman Permian,L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | May 2025 |
| 44 | Nadel And Gussman Rockies, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2012 |
| 45 | Nadel And Gussman Ruston, LLC | | Oil & Gas Operator | Dec 2024 |
| 46 | Nadel And Gussman, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 47 | Nadk, LLC | Orem, UT 84097 | Oil & Gas Operator | Nov 2024 |
| 48 | Nadsoilco LLC | Chicago, IL 60606 | Oil & Gas Operator | May 2025 |
| 49 | Nae, Inc. | Kerrville, TX 78028 | Oil Operator | Jan 2025 |
| 50 | Naftex Operating Company | | Oil & Gas Operator | Mar 2025 |
| 51 | Nagel, Arthur F. & Elaine L. | South Dayton, NY 14138 | Gas Operator | Dec 2023 |
| 52 | Nahama & Weagant Energy Company | | Oil & Gas Operator | Dec 1997 |
| 53 | Naifco Oil & Gas LLC | Oklahoma City, OK 73107 | Oil & Gas Operator | Feb 2025 |
| 54 | Nail Stephen Dba Nail Oil & Gas | Maud, OK 74854 | Oil Operator | Dec 2024 |
| 55 | Nails Operating Company LLC | Hondo, TX 78861 | Oil Operator | May 2025 |
| 56 | Nairn, Robert | Elkhart, KS 67950 | Gas Operator | Apr 2011 |
| 57 | Nall Oil & Gas | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2025 |
| 58 | Nally, Joseph L | Uniontown, KY 42461 | Oil & Gas Operator | Dec 2021 |
| 59 | Nami Resources Company, LLC | | Oil & Gas Operator | Dec 2023 |
| 60 | Nana Oil & Gas Inc. | | Oil & Gas Operator | Jan 2018 |
| 61 | Nance Engineering Inc. | Houston, TX 77058 | Oil & Gas Operator | Mar 2002 |
| 62 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
| 63 | Nanco Resources, LLC | | Gas Operator | Dec 2021 |
| 64 | Nancy Oil & Gas Corp | Tulsa, OK 74101 | Oil Operator | Apr 2020 |
| 65 | Nancy Wilcox E Qualls | Farmington, NM 87410 | Gas Operator | May 2017 |
| 66 | Nanke Energy LLC | Westminster, CO 80234 | Oil & Gas Operator | Dec 2024 |
| 67 | Narbo Farms, LTD. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 68 | Nard Inc | Buffalo, OK 73834-9737 | Oil Operator | Dec 2005 |
| 69 | Naro Oil Corporation | Dallas, TX 75230-1986 | Oil & Gas Operator | Nov 2003 |
| 70 | Nasco Petroleum L.L.C. | | Oil & Gas Operator | Mar 2025 |
| 71 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Jan 2025 |
| 72 | Nashville Associates Inc | | Oil & Gas Operator | Dec 2003 |
| 73 | Nassau Resources Inc | Denver, CO 80222 | Oil & Gas Operator | Mar 2000 |
| 74 | Nasser Oil & Gas, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 1998 |
| 75 | Nat. Gas Pipeline Co Of Amer. | | Oil Operator | Dec 2008 |
| 76 | Nataraja Oil Corporation | Foley, AL 36535 | Oil Operator | Aug 2010 |
| 77 | Natchez Operating, LLC | | Oil & Gas Operator | Nov 2023 |
| 78 | Natchez Pipe & Equip. Co., Inc | | Oil Operator | Nov 1981 |
| 79 | Nathan C. Hale | | Oil & Gas Operator | Jan 2025 |
| 80 | Nathan Hale Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 81 | Nathan Petroleum Corp., Yahn & Yahn Inc | Rexville, NY 14877 | Oil & Gas Operator | Dec 2023 |
| 82 | Nathan Petroleum Corporation | Rexville, NY 14877 | Oil & Gas Operator | Dec 2023 |
| 83 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 84 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 85 | National Cooperative RFG Assoc | McPherson, KS 67460-1404 | Oil & Gas Operator | Jun 2006 |
| 86 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 87 | National Energy Exp Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 88 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 89 | National Exploration Company | | Oil & Gas Operator | Mar 1982 |
| 90 | National Fuel Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Mar 2025 |
| 91 | National Fuel Gas Supply Corporation | | Gas Operator | Dec 2010 |
| 92 | National Investors Group | Warren, OH 44481 | Oil & Gas Operator | Nov 1996 |
| 93 | National Offshore LP | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 94 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 95 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 96 | National Oil Company (Ohio) The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 97 | National Onshore LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 98 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 99 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 100 | National Pride Operating | Parker, CO 80134 | Oil & Gas Operator | Dec 2017 |