| 201 | Pan American Energy Corporation | | Oil & Gas Operator | Dec 1998 |
| 202 | Pan American Petroleum Cor | | Oil & Gas Operator | Dec 1981 |
| 203 | Pan American Petroleum Corp. | | Oil & Gas Operator | Nov 1988 |
| 204 | Pan American Sales Corporation | Dallas, TX 75202 | Oil & Gas Operator | Mar 2001 |
| 205 | Pan Energy Company, Inc. | Orchard Park, NY 14127 | Oil & Gas Operator | Dec 2025 |
| 206 | Pan Petroleum Corp. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 207 | Pan Petroleum MLP | Kansas City, MO 64114 | Oil & Gas Operator | Aug 1997 |
| 208 | Pan Resources, Inc. | Borger, TX 79007 | Oil & Gas Operator | Mar 2008 |
| 209 | Pan Texas Petroleum Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2003 |
| 210 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Jul 2026 |
| 211 | Pan Western Petroleum Co. | | Oil & Gas Operator | Dec 1993 |
| 212 | Pan-Ok Production Company | | Oil & Gas Operator | Nov 2024 |
| 213 | Panaco Production Co | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 214 | Panaco, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2026 |
| 215 | Panada Exploration, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1996 |
| 216 | Panadero Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 2002 |
| 217 | Panama Central School District | Panama, NY 14767 | Gas Operator | Dec 2025 |
| 218 | Panamerican Operating Inc | Dallas, TX 75219 | Oil & Gas Operator | Jul 2026 |
| 219 | Pancanadian Petr | | Oil Operator | Aug 1990 |
| 220 | Pancanadian Petroleum Company | | Oil & Gas Operator | Oct 1989 |
| 221 | Panda Pipe & Equipment, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1996 |
| 222 | Panenergy La Intrastate Co | | Oil Operator | Mar 2000 |
| 223 | Panenergy Services Inc | Houston, TX 77525 | Oil & Gas Operator | May 2001 |
| 224 | Panexco Operating LLC | Oklahoma City, OK 73103-2203 | Oil & Gas Operator | Oct 2014 |
| 225 | Pangaea Exploration Corp | Edmond, OK 73013 | Oil & Gas Operator | May 2019 |
| 226 | Pangborn Tom Dba Pangborn Exploration | | Oil & Gas Operator | Jan 1993 |
| 227 | Pangea Corporation | San Angelo, TX 76904 | Oil & Gas Operator | Jul 2026 |
| 228 | Pangea'S Edge Operating Company LLC | Plano, TX 75025 | Oil & Gas Operator | Jul 2026 |
| 229 | Panhandle Easter | | Gas Operator | Dec 1986 |
| 230 | Panhandle Eastern Pipeline Company LP | Houston, TX 77002-6803 | Oil & Gas Operator | Oct 1999 |
| 231 | Panhandle Oil & Gas Consultants Inc | Woodward, OK 73802-5011 | Oil & Gas Operator | Jul 2015 |
| 232 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 233 | Panhandle Oilfield Service Companies Inc | Liberal, KS 67905-1256 | Oil Operator | Sep 2000 |
| 234 | Panhandle Petrol | | Oil Operator | Jun 1987 |
| 235 | Panhandle Producing Co., Oper. | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 236 | Panhandle Producing Company | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 237 | Pannonian Energy Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2004 |
| 238 | Panoak Oil & Gas Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Aug 2018 |
| 239 | Panoche Vallecitos Oil Co. | | Oil & Gas Operator | Dec 2025 |
| 240 | Panola Corporation, The | Dallas, TX 75252 | Oil & Gas Operator | Sep 2002 |
| 241 | Panotech Exploration Corp. | | Oil & Gas Operator | Jan 1983 |
| 242 | Pantano Energy | San Antonio, TX 78258 | Oil & Gas Operator | Jul 1999 |
| 243 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Jul 2026 |
| 244 | Pantex Oil & Gas LLC | Ranger, TX 76470 | Oil & Gas Operator | Jul 2018 |
| 245 | Panther Bayou Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2021 |
| 246 | Panther City Energy LLC | San Antonio, TX 78205 | Oil & Gas Operator | Jul 2026 |
| 247 | Panther Creek Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2012 |
| 248 | Panther Energy Company III LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2020 |
| 249 | Panther Energy Company, LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2022 |
| 250 | Panther Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2017 |
| 251 | Panther Operating LLC | Pauls Valley, OK 73075 | Oil & Gas Operator | Apr 2026 |
| 252 | Paoco-Walker | | Gas Operator | Sep 2011 |
| 253 | Paoli Investors LTD | | Oil & Gas Operator | Aug 1985 |
| 254 | Pap Oil Company Inc | Cement, OK 73017-0240 | Oil & Gas Operator | Nov 1998 |
| 255 | Papal Enterprises Inc | Oklahoma City, OK 73154-1555 | Oil & Gas Operator | Apr 2015 |
| 256 | Papco, Inc. | Warren, PA 16365 | Oil & Gas Operator | Jul 2026 |
| 257 | Pape Oilfield Service Inc | | Oil & Gas Operator | Dec 2012 |
| 258 | Papesch Robert J | Waterford, PA 16441-4607 | Gas Operator | Dec 2025 |
| 259 | Papineau Drilling, Inc | Albany, KY 42602 | Oil Operator | Dec 2014 |
| 260 | Pappe Court Jr | Kingfisher, OK 73750-0688 | Oil & Gas Operator | Nov 2001 |
| 261 | Par Development | Midland, TX 79711 | Oil & Gas Operator | Jul 2026 |
| 262 | Par Expl Co & Taurus Petroleum | | Gas Operator | Mar 1984 |
| 263 | Par Exploration Co | | Oil & Gas Operator | Oct 1986 |
| 264 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2026 |
| 265 | Par Oil Company Inc | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 266 | Par Oil Corporation | | Oil & Gas Operator | Sep 1990 |
| 267 | Par Oil Corporation, Et Al | | Oil & Gas Operator | Dec 1984 |
| 268 | Par Pacific Holdings Inc | | Oil & Gas Operator | Jun 2010 |
| 269 | Par Petroleum In | | Oil & Gas Operator | Jun 1993 |
| 270 | Par Petroleum, Inc. | Liberal, KS 67901 | Gas Operator | Dec 2009 |
| 271 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 272 | Par, Inc. | Oklahoma City, OK 73111 | Oil Operator | May 2016 |
| 273 | Par-Co Drilling Inc. | | Oil Operator | Dec 2023 |
| 274 | Par-Naylor | | Oil Operator | Mar 1985 |
| 275 | Para Pro Corporation | Sedona, AZ 86336-5745 | Oil & Gas Operator | Jan 2005 |
| 276 | Parabellum Energy Oper Co, LLC | Houston, TX 77056 | Oil Operator | Dec 2017 |
| 277 | Paradigm Energy LLC | Lenexa, KS 66227 | Oil & Gas Operator | Dec 2024 |
| 278 | Paradigm Energy-Mississippi, LLC | | Oil Operator | May 2026 |
| 279 | Paradigm Exploration Company | Dallas, TX 75214 | Oil Operator | Sep 2020 |
| 280 | Paradigm Exploration, L.P. | La Grange, TX 78945 | Oil Operator | Sep 2008 |
| 281 | Paradigm Petroleum Corporation | Abilene, TX 79605 | Oil & Gas Operator | Jul 2026 |
| 282 | Paradigm Twenty LLC | Stillwater, OK 74074-1745 | Oil & Gas Operator | Mar 2026 |
| 283 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 284 | Paradise Creek Oil & Gas | Plainville, KS 67663 | Oil Operator | Dec 2025 |
| 285 | Paradox Petroleum Company | Amarillo, TX 79114-7587 | Oil & Gas Operator | Dec 1998 |
| 286 | Paradox Upstream, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 287 | Paragon Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jul 2026 |
| 288 | Paragon Energy, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Jul 2026 |
| 289 | Paragon Industries Inc | Sapulpa, OK 74066-6987 | Oil Operator | Apr 2026 |
| 290 | Paragon Oil & Gas, LLC | Aledo, TX 76008 | Oil & Gas Operator | Jul 2026 |
| 291 | Paragon Oil Co | | Oil & Gas Operator | Oct 1991 |
| 292 | Paragon Production Company | Edmond, OK 73013-5051 | Oil & Gas Operator | Feb 2021 |
| 293 | Paragon Resources, Inc | | Oil & Gas Operator | Nov 1991 |
| 294 | Paragon Trading Co., LLC | | Oil Operator | Dec 2009 |
| 295 | Parallel Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2015 |
| 296 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 297 | Parallel Petroleum LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2026 |
| 298 | Paraluxe Oil & Gas, LLC | Eunice, NM 88231 | Oil & Gas Operator | Jul 2026 |
| 299 | Paramore Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Apr 2022 |
| 300 | Paramount Enterprises Inc | Hays, KS 67601 | Oil Operator | Aug 2000 |