| 6201 | Command Energy Operating LLC | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 6202 | Commander Oil Company LTD. | | Oil & Gas Operator | Dec 2021 |
| 6203 | Commerce Energy Co | Cleveland, OH 44115 | Oil & Gas Operator | Dec 1987 |
| 6204 | Commerce Energy, Inc. | | Oil & Gas Operator | Dec 1999 |
| 6205 | Commerce Oil & Gas Co | Rocky River, OH 44116 | Oil & Gas Operator | Dec 1996 |
| 6206 | Commercial Energ | | Gas Operator | Oct 1996 |
| 6207 | Commercial Oil - | | Oil Operator | Apr 1994 |
| 6208 | Commercial Oil Company, Inc. | Wichita, KS 67204 | Oil Operator | Jun 2001 |
| 6209 | Commodore Energy Co | Rolling Hills, CA 90274-5265 | Oil & Gas Operator | Dec 2007 |
| 6210 | Common Energy Inc | Douglas, WY 82633 | Oil & Gas Operator | Aug 1995 |
| 6211 | Common Resources L.L.C. | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 6212 | Commonwealth Energy, Inc. | Weston, WV 26452-0000 | Oil & Gas Operator | Dec 2021 |
| 6213 | Commonwealth Pet | | Oil & Gas Operator | Nov 1995 |
| 6214 | Commonwealth Resources, LLC | Fort Collins, CO 80524 | Oil Operator | Dec 2008 |
| 6215 | Commonwealth Royalty, LLC | Balmorhea, TX 79718 | Oil Operator | Nov 2024 |
| 6216 | Compadre Drilling & Expl Corp | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2015 |
| 6217 | Compadres, Inc. | | Oil & Gas Operator | Dec 1988 |
| 6218 | Compass Drilling Inc | Enid, OK 73702-5467 | Oil & Gas Operator | Sep 2014 |
| 6219 | Compass Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2024 |
| 6220 | Compass Exploration LLC | Hill City, KS 67642 | Oil Operator | Jun 2024 |
| 6221 | Compass Global Resources LLC | | Oil & Gas Operator | Dec 2015 |
| 6222 | Compass Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 6223 | Compass Resources | Enid, OK 73702 | Oil & Gas Operator | Dec 2007 |
| 6224 | Complete Energy Services LLC | Gainesville, TX 76240 | Oil Operator | Aug 2022 |
| 6225 | Compostella Oil Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 6226 | Compressor Syste | | Oil Operator | May 1991 |
| 6227 | Compro Services Inc | Williamstown, WV 26187 | Oil & Gas Operator | Dec 1985 |
| 6228 | Comstock Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Nov 2024 |
| 6229 | Comstock Offshore, LLC | | Oil & Gas Operator | Nov 2004 |
| 6230 | Comstock Oil & Gas -- La, Inc. | | Oil & Gas Operator | Mar 2005 |
| 6231 | Comstock Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Dec 2012 |
| 6232 | Comstock Oil & Gas, LLC | Frisco, TX 75034 | Oil & Gas Operator | Nov 2024 |
| 6233 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 6234 | Comstock Oil & Gas--La, LLC | | Oil & Gas Operator | Jun 2024 |
| 6235 | Comyn Natural Gas, Inc. | Fort Worth, TX 76163 | Oil & Gas Operator | Nov 2024 |
| 6236 | Con-Lin Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Nov 2017 |
| 6237 | Conch Oil, Inc. | Wichita, KS 67202 | Oil Operator | Jun 2002 |
| 6238 | Concho Exploration | Midland, TX 79701 | Oil & Gas Operator | Feb 2004 |
| 6239 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 6240 | Concho Oil & Gas Corp. | Midland, TX 79701 | Oil & Gas Operator | May 2003 |
| 6241 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Nov 2024 |
| 6242 | Concho Oilfield Service, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2013 |
| 6243 | Concho Petroleum | | Oil & Gas Operator | Dec 1994 |
| 6244 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 6245 | Concor Petroleum, Inc. | | Oil & Gas Operator | Feb 1983 |
| 6246 | Concord Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2021 |
| 6247 | Concord Energy, Inc. | Glen Rose, TX 76043 | Oil & Gas Operator | Nov 2024 |
| 6248 | Concord Operating Incorporated | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2008 |
| 6249 | Concord Resources, LLC | | Oil & Gas Operator | Nov 2000 |
| 6250 | Concorde Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 1994 |
| 6251 | Concorde Resources Corporation | Eufaula, OK 74432 | Oil & Gas Operator | Sep 2024 |
| 6252 | Concordia Resources Inc. | | Oil & Gas Operator | Aug 2024 |
| 6253 | Condor Energy | | Oil Operator | Aug 1995 |
| 6254 | Condor Energy Inc | Great Bend, KS 67530 | Oil & Gas Operator | Oct 2021 |
| 6255 | Condor Energy Technology LLC | | Oil & Gas Operator | Jul 2018 |
| 6256 | Condor Exploration LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Sep 2009 |
| 6257 | Condor Oil Company Inc. | | Oil & Gas Operator | Dec 2000 |
| 6258 | Condor Oil Corp | Boulder, CO 80303 | Oil & Gas Operator | Dec 1994 |
| 6259 | Condor Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 6260 | Condor Operating Company, LLC | Midland, TX 79702 | Oil & Gas Operator | Nov 2024 |
| 6261 | Condor Petroleum | | Oil & Gas Operator | Nov 1990 |
| 6262 | Condor Petroleum Corporation | | Oil & Gas Operator | Aug 2020 |
| 6263 | Condor Petroleum, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 6264 | Condra, James M. Jr. | Sonora, TX 76950 | Oil & Gas Operator | May 1996 |
| 6265 | Condrin Oil 1985-A LTD | Tulsa, OK 74136 | Oil & Gas Operator | Nov 1998 |
| 6266 | Condry Oil Compa | | Oil Operator | May 1992 |
| 6267 | Cone & Petree Oil & Gas Exp. Inc | Lubbock, TX 79453 | Oil & Gas Operator | May 2024 |
| 6268 | Cone, Bert Lee | Metairie, LA 70003 | Oil Operator | Jun 2024 |
| 6269 | Cone, Charles M. Services, Inc. | Dallas, TX 75372 | Oil & Gas Operator | Sep 2005 |
| 6270 | Cone, S. E. Jr. | Lubbock, TX 79408 | Oil & Gas Operator | Feb 2002 |
| 6271 | Confed Oil Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 6272 | Confederate Spooling Inc | Okemah, OK 74859-2409 | Oil & Gas Operator | Apr 2020 |
| 6273 | Conklin Robert L Dba Conklin Oil LLC | Tulsa, OK 74153 | Oil Operator | Aug 2024 |
| 6274 | Conklin, Patrick J. | Rushville, NY 14544 | Gas Operator | Dec 2023 |
| 6275 | Conley Energy Co LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2020 |
| 6276 | Conley Oil Co | Pawhuska, OK 74056 | Oil Operator | Aug 2000 |
| 6277 | Conley Oil, Inc | Salyersville, KY 41465 | Oil & Gas Operator | Dec 2022 |
| 6278 | Conley P Smith Operating Co. | | Oil & Gas Operator | Jun 1995 |
| 6279 | Conley, Harry | Colony, KS 66015 | Oil Operator | Jun 2024 |
| 6280 | Conn Energy Group, LLC | | Oil & Gas Operator | Apr 2024 |
| 6281 | Conn-Okla Producing Co Inc | | Oil & Gas Operator | Nov 1992 |
| 6282 | Connaway Oil & Gas Co. | Brookesmith, TX 76827 | Oil & Gas Operator | Feb 2016 |
| 6283 | Connell, Mark Allen | Claflin, KS 67525 | Oil Operator | Jul 2024 |
| 6284 | Conner Family Limited Partnership | Humble, TX 77338 | Oil & Gas Operator | Aug 2024 |
| 6285 | Conner Jelly | Seminole, OK 74868 | Oil & Gas Operator | Mar 1996 |
| 6286 | Conner Production Co LLC | Seminole, OK 74868 | Oil & Gas Operator | Sep 2024 |
| 6287 | Conner, E B Jr | | Oil & Gas Operator | Dec 2022 |
| 6288 | Conner, Eugene | Bartlesville, OK 74005 | Oil & Gas Operator | Jul 2020 |
| 6289 | Conner, Rick | Winfield, KS 67156 | Oil Operator | Aug 2019 |
| 6290 | Conner-Marrs Company | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2024 |
| 6291 | Connie J & Ronald L Yeany | Fairmount City, PA 16224-1903 | Gas Operator | Dec 2023 |
| 6292 | Connoil LLC | Grove City, OH 43123 | Oil & Gas Operator | Dec 2023 |
| 6293 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 6294 | Conoco Incorpora | | Oil & Gas Operator | Apr 1988 |
| 6295 | ConocoPhillips Alaska, Inc. | | Oil & Gas Operator | Sep 2024 |
| 6296 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Nov 2024 |
| 6297 | Conquest Energy, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Nov 2024 |
| 6298 | Conquest Exploration | Houston, TX 77068 | Oil & Gas Operator | May 1991 |
| 6299 | Conquest Exploration Co. | | Oil & Gas Operator | Mar 1992 |
| 6300 | Conquest Oil Company | Big Spring, TX 79721 | Oil & Gas Operator | Aug 2024 |