| 5101 | Cenergy Exploration Company | Dallas, TX 75231 | Oil & Gas Operator | Sep 2000 |
| 5102 | Cenergy Resources LLC | | Oil & Gas Operator | Jul 2026 |
| 5103 | Cenestia Energy Inc | | Oil & Gas Operator | Dec 1998 |
| 5104 | Cenex | | Oil & Gas Operator | Dec 1996 |
| 5105 | Cenex Inc. | | Oil & Gas Operator | Dec 1994 |
| 5106 | Ceniza Petroleum, Inc. | Portland, TX 78374 | Oil & Gas Operator | Sep 2026 |
| 5107 | Cenla Oil Company, LLC | | Oil Operator | Dec 2024 |
| 5108 | Cenpat Operating LLC | Houston, TX 77042-3044 | Oil & Gas Operator | Jun 2026 |
| 5109 | Centaur Exploration LLC | Evanston, WY 82931 | Oil & Gas Operator | Sep 2026 |
| 5110 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2026 |
| 5111 | Centaur Resources Inc | Oklahoma City, OK 73142-6804 | Oil & Gas Operator | Jun 2026 |
| 5112 | Centennial Energy | Thermopolis, WY 82443 | Oil & Gas Operator | May 2026 |
| 5113 | Centennial Energy Company | Torrance, CA 90503 | Oil Operator | Jan 2000 |
| 5114 | Centennial Energy Corp. | Big Lake, TX 76932 | Oil & Gas Operator | Jan 1997 |
| 5115 | Centennial Exploration, Inc. | | Oil & Gas Operator | Dec 1985 |
| 5116 | Centennial Resource Prod, LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2023 |
| 5117 | Centennial Resources Inc | Drumright, OK 74030-1234 | Oil & Gas Operator | Dec 2007 |
| 5118 | Center Dean Dba Center Operating Co | | Oil & Gas Operator | Jul 2003 |
| 5119 | Center Junction Corp | | Oil Operator | Mar 2009 |
| 5120 | Center Oil Company | Ada, OK 74821-0584 | Oil Operator | May 2003 |
| 5121 | Center Production Company LLC | Ada, OK 74820 | Oil Operator | Jun 2026 |
| 5122 | Center Start, LC | Kilgore, TX 75663 | Oil & Gas Operator | May 2008 |
| 5123 | Centerfire Resources | Springerville, AZ 85938 | Oil & Gas Operator | Sep 2026 |
| 5124 | Centergate Resources LLC | | Oil & Gas Operator | Dec 2024 |
| 5125 | Centerpoint Energy FLD Ser Inc | | Oil Operator | Feb 2011 |
| 5126 | Centerpoint Water Disposal Inc | | Oil & Gas Operator | Aug 1984 |
| 5127 | Centex Energy, LLC | Bryan, TX 77802 | Oil & Gas Operator | Sep 2026 |
| 5128 | Centex Pipe & Equipment, Inc. | Houston, TX 77070 | Oil & Gas Operator | Sep 2026 |
| 5129 | Central Basin Oil Inv. Inc. | Southlake, TX 76092 | Oil & Gas Operator | Sep 2026 |
| 5130 | Central California Oil Company | Fish Camp, CA 93623 | Oil & Gas Operator | Jul 2026 |
| 5131 | Central Crude Corp. | Wichita, KS 67206 | Oil Operator | Mar 2014 |
| 5132 | Central Crude, Inc. | | Oil & Gas Operator | Jul 2014 |
| 5133 | Central Drilling Company, USA | Midland, TX 79710 | Oil & Gas Operator | May 2006 |
| 5134 | Central Energy C | | Oil & Gas Operator | Jun 1994 |
| 5135 | Central Energy Co Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 1998 |
| 5136 | Central Energy Corporation | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 5137 | Central Energy Group, LLC | | Oil & Gas Operator | Dec 2020 |
| 5138 | Central Energy Producing Company | San Antonio, TX 78217 | Oil & Gas Operator | Sep 2003 |
| 5139 | Central Gulf Petroleum Inc | The Woodlands, TX 77380 | Oil & Gas Operator | Sep 2026 |
| 5140 | Central Hydrocarbons, LLC | | Oil Operator | Dec 2013 |
| 5141 | Central Lease Inc. | | Oil & Gas Operator | Dec 1998 |
| 5142 | Central Min Oper Co, Inc. | | Gas Operator | Mar 1994 |
| 5143 | Central Mineral Management Inc | | Oil & Gas Operator | Jul 1990 |
| 5144 | Central Mineral Operating Co,Inc | San Antonio, TX 78216 | Oil & Gas Operator | Apr 1997 |
| 5145 | Central Montana Resources, LLC | San Antonio, TX 78209 | Oil Operator | Jul 2015 |
| 5146 | Central Oil Field Supply | Lancaster, OH 43130 | Oil & Gas Operator | Dec 1991 |
| 5147 | Central Oklahoma Disposal Company | Kingston, OK 73439 | Oil Operator | Jul 2026 |
| 5148 | Central Operating Inc | Denver, CO 80202 | Oil & Gas Operator | May 2026 |
| 5149 | Central Operating, LLC | | Oil & Gas Operator | Dec 2025 |
| 5150 | Central Pacific Group, Inc. | | Oil & Gas Operator | Dec 2003 |
| 5151 | Central Pacific Resources | | Oil Operator | Jul 2026 |
| 5152 | Central Park Energy | | Oil & Gas Operator | Dec 1991 |
| 5153 | Central Plains Oil&Gas Corp. (A) | Bryan, TX 77802 | Oil & Gas Operator | Mar 2003 |
| 5154 | Central Resources, Inc. | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
| 5155 | Central States Energy LLC | Scottsdale, AZ 85260 | Gas Operator | Apr 2012 |
| 5156 | Central Texas Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 5157 | Central Transmission Systems Co | | Oil & Gas Operator | Apr 2015 |
| 5158 | Central Valley Gas Storage LLC | | Gas Operator | Jul 2026 |
| 5159 | Central Wyoming Resources LTD | Glenrock, WY 82637 | Oil Operator | Jul 2021 |
| 5160 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2026 |
| 5161 | Centura Inc | | Oil & Gas Operator | Feb 1985 |
| 5162 | Centurion Exploration Company | Houston, TX 77042 | Oil & Gas Operator | May 2009 |
| 5163 | Centurion Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2009 |
| 5164 | Centurion Oil & Gas Op. Co. Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 1998 |
| 5165 | Centurion Oil Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | May 1992 |
| 5166 | Centurion Oilfield Services LLC | Poteau, OK 74953 | Oil & Gas Operator | Jul 2026 |
| 5167 | Centurion Operating Corporation | Rockwall, TX 75087 | Oil & Gas Operator | Sep 2026 |
| 5168 | Centurion Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2015 |
| 5169 | Century Assets Corporation | Houston, TX 77056 | Oil Operator | Sep 2026 |
| 5170 | Century Energy | Gillette, WY 82717 | Oil & Gas Operator | Dec 1996 |
| 5171 | Century Energy, Inc. | | Oil & Gas Operator | Aug 1989 |
| 5172 | Century Exploration Company | | Oil & Gas Operator | Dec 2003 |
| 5173 | Century Exploration Houston, Inc | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2011 |
| 5174 | Century Exploration Houston, LLC | Austin, TX 78702 | Oil & Gas Operator | Jan 2016 |
| 5175 | Century Exploration N.O. LLC | | Oil & Gas Operator | Jun 2017 |
| 5176 | Century Exploration N.O., Inc. | | Oil & Gas Operator | Sep 2011 |
| 5177 | Century Exploration New Orleans, LLC | | Oil & Gas Operator | Mar 2008 |
| 5178 | Century Exploration Resources LLC | | Oil & Gas Operator | Dec 2015 |
| 5179 | Century Mineral Corporation | | Oil & Gas Operator | Dec 1990 |
| 5180 | Century Mining, LLC | | Gas Operator | Dec 2021 |
| 5181 | Century Offshore MGMT. Corp. | | Oil & Gas Operator | Dec 1999 |
| 5182 | Century Oil & Gas Corporation | | Oil & Gas Operator | Dec 1987 |
| 5183 | Century Oil And Gas LLC | Katy, TX 77494 | Oil & Gas Operator | Jul 2026 |
| 5184 | Century Oil Company Inc | Shreveport, LA 71107 | Oil Operator | Dec 2025 |
| 5185 | Century Oil Mana | | Oil Operator | Apr 1987 |
| 5186 | Century Oil, Inc. | | Oil Operator | Apr 2022 |
| 5187 | Century Petroleum | Nowata, OK 74048 | Oil & Gas Operator | Dec 2000 |
| 5188 | Century Petroleum, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2026 |
| 5189 | Century Production Inc | | Oil & Gas Operator | Dec 1986 |
| 5190 | Century Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Sep 2026 |
| 5191 | Century Royalty 2000 GP, LLC | Conroe, TX 77301 | Oil & Gas Operator | Jun 2020 |
| 5192 | Century Stimulation & Eng LLC | | Oil Operator | Dec 2015 |
| 5193 | Century Well Service | Cumberland, WV 26047 | Oil & Gas Operator | Dec 2006 |
| 5194 | Ceo Operating, Co. | | Oil & Gas Operator | Dec 1999 |
| 5195 | Cep Mid-Continent LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jun 2026 |
| 5196 | Cerberus Engineering, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2026 |
| 5197 | Cerne, Christine | Eden, NY 14057 | Gas Operator | Dec 2025 |
| 5198 | Cerro Oil Co., Inc. | | Oil Operator | Dec 1987 |
| 5199 | Certified Petroleum Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2006 |
| 5200 | Cesinger Exploration Service, In | Dallas, TX 75208 | Oil & Gas Operator | Mar 2006 |