| 21301 | Panenergy Services Inc | Houston, TX 77525 | Oil & Gas Operator | May 2001 |
| 21302 | Panexco Operating LLC | Oklahoma City, OK 73103-2203 | Oil & Gas Operator | Oct 2014 |
| 21303 | Pangaea Exploration Corp | Edmond, OK 73013 | Oil & Gas Operator | May 2019 |
| 21304 | Pangborn Tom Dba Pangborn Exploration | | Oil & Gas Operator | Jan 1993 |
| 21305 | Pangea Corporation | San Angelo, TX 76904 | Oil & Gas Operator | Sep 2026 |
| 21306 | Pangea'S Edge Operating Company LLC | Plano, TX 75025 | Oil & Gas Operator | Sep 2026 |
| 21307 | Panhandle Easter | | Gas Operator | Dec 1986 |
| 21308 | Panhandle Eastern Pipeline Company LP | Houston, TX 77002-6803 | Oil & Gas Operator | Oct 1999 |
| 21309 | Panhandle Oil & Gas Consultants Inc | Woodward, OK 73802-5011 | Oil & Gas Operator | Jul 2015 |
| 21310 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 21311 | Panhandle Oilfield Service Companies Inc | Liberal, KS 67905-1256 | Oil Operator | Sep 2000 |
| 21312 | Panhandle Petrol | | Oil Operator | Jun 1987 |
| 21313 | Panhandle Producing Co., Oper. | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 21314 | Panhandle Producing Company | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 21315 | Pannonian Energy Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2004 |
| 21316 | Panoak Oil & Gas Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Aug 2018 |
| 21317 | Panoche Vallecitos Oil Co. | | Oil & Gas Operator | Dec 2025 |
| 21318 | Panola Corporation, The | Dallas, TX 75252 | Oil & Gas Operator | Sep 2002 |
| 21319 | Panotech Exploration Corp. | | Oil & Gas Operator | Jan 1983 |
| 21320 | Pantano Energy | San Antonio, TX 78258 | Oil & Gas Operator | Jul 1999 |
| 21321 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Sep 2026 |
| 21322 | Pantex Oil & Gas LLC | Ranger, TX 76470 | Oil & Gas Operator | Jul 2018 |
| 21323 | Panther Bayou Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2021 |
| 21324 | Panther Creek Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2012 |
| 21325 | Panther Energy Company III LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2020 |
| 21326 | Panther Energy Company, LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2022 |
| 21327 | Panther Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2017 |
| 21328 | Panther Operating LLC | Pauls Valley, OK 73075 | Oil & Gas Operator | May 2026 |
| 21329 | Paoco-Walker | | Gas Operator | Sep 2011 |
| 21330 | Paoli Investors LTD | | Oil & Gas Operator | Aug 1985 |
| 21331 | Pap Oil Company Inc | Cement, OK 73017-0240 | Oil & Gas Operator | Nov 1998 |
| 21332 | Papal Enterprises Inc | Oklahoma City, OK 73154-1555 | Oil & Gas Operator | Apr 2015 |
| 21333 | Papco, Inc. | San Augustine, TX 75972 | Oil & Gas Operator | Sep 2026 |
| 21334 | Pape Oilfield Service Inc | | Oil & Gas Operator | Dec 2012 |
| 21335 | Papesch Robert J | | Gas Operator | Dec 2025 |
| 21336 | Papineau Drilling, Inc | Albany, KY 42602 | Oil Operator | Dec 2014 |
| 21337 | Pappe Court Jr | Kingfisher, OK 73750-0688 | Oil & Gas Operator | Nov 2001 |
| 21338 | Par Development | Midland, TX 79711 | Oil & Gas Operator | Sep 2026 |
| 21339 | Par Exploration Co | | Oil & Gas Operator | Oct 1986 |
| 21340 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2026 |
| 21341 | Par Oil Company Inc | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 21342 | Par Oil Corporation | | Oil & Gas Operator | Sep 1990 |
| 21343 | Par Oil Corporation, Et Al | | Oil & Gas Operator | Dec 1984 |
| 21344 | Par Pacific Holdings Inc | | Oil & Gas Operator | Jun 2010 |
| 21345 | Par Petroleum In | | Oil & Gas Operator | Jun 1993 |
| 21346 | Par Petroleum, Inc. | Liberal, KS 67901 | Gas Operator | Dec 2009 |
| 21347 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 21348 | Par, Inc. | Oklahoma City, OK 73111 | Oil Operator | May 2016 |
| 21349 | Par-Co Drilling Inc. | | Oil Operator | Dec 2023 |
| 21350 | Par-Naylor | | Oil Operator | Mar 1985 |
| 21351 | Para Pro Corporation | Sedona, AZ 86336-5745 | Oil & Gas Operator | Jan 2005 |
| 21352 | Parabellum Energy Oper Co, LLC | Houston, TX 77056 | Oil Operator | Dec 2017 |
| 21353 | Paradigm Energy LLC | Lenexa, KS 66227 | Oil & Gas Operator | Dec 2024 |
| 21354 | Paradigm Energy-Mississippi, LLC | | Oil Operator | Jun 2026 |
| 21355 | Paradigm Exploration Company | Dallas, TX 75214 | Oil Operator | Sep 2020 |
| 21356 | Paradigm Exploration, L.P. | La Grange, TX 78945 | Oil Operator | Sep 2008 |
| 21357 | Paradigm Petroleum Corporation | Abilene, TX 79605 | Oil & Gas Operator | Sep 2026 |
| 21358 | Paradigm Twenty LLC | Stillwater, OK 74074-1745 | Oil & Gas Operator | Mar 2026 |
| 21359 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 21360 | Paradise Creek Oil & Gas | Plainville, KS 67663 | Oil Operator | Dec 2025 |
| 21361 | Paradox Petroleum Company | Amarillo, TX 79114-7587 | Oil & Gas Operator | Dec 1998 |
| 21362 | Paradox Upstream, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 21363 | Paragon Corporation | Abilene, TX 79604 | Oil & Gas Operator | Sep 2026 |
| 21364 | Paragon Energy, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Sep 2026 |
| 21365 | Paragon Industries Inc | Sapulpa, OK 74066-6987 | Oil Operator | May 2026 |
| 21366 | Paragon Oil & Gas, LLC | Aledo, TX 76008 | Oil & Gas Operator | Sep 2026 |
| 21367 | Paragon Oil Co | | Oil & Gas Operator | Oct 1991 |
| 21368 | Paragon Production Company | Edmond, OK 73013-5051 | Oil & Gas Operator | Feb 2021 |
| 21369 | Paragon Resources, Inc | | Oil & Gas Operator | Nov 1991 |
| 21370 | Paragon Trading Co., LLC | | Oil Operator | Dec 2009 |
| 21371 | Parallel Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2015 |
| 21372 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 21373 | Parallel Petroleum LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 21374 | Paraluxe Oil & Gas, LLC | Eunice, NM 88231 | Oil & Gas Operator | Sep 2026 |
| 21375 | Paramore Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Apr 2022 |
| 21376 | Paramount Enterprises Inc | Hays, KS 67601 | Oil Operator | Aug 2000 |
| 21377 | Paramount Petroleum Corp | Dallas, TX 75374 | Oil Operator | Dec 2000 |
| 21378 | Paramount Producing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 1996 |
| 21379 | Parapetroleum | Kerrville, TX 78028 | Oil & Gas Operator | Feb 1997 |
| 21380 | Paratus Petroleum LLC | Rockwall, TX 75087 | Oil & Gas Operator | Sep 2026 |
| 21381 | Parawon Operating LLC | Mobile, AL 36602 | Oil Operator | Oct 2011 |
| 21382 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 21383 | Pardue Energy Inc. | Dallas, TX 75230 | Oil & Gas Operator | Dec 2015 |
| 21384 | Pardue Oil | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2006 |
| 21385 | Pardue Oil, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 21386 | Pardue, William M., III | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 1996 |
| 21387 | Pardus Oil & Gas Operating, LP | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2022 |
| 21388 | Parham Edith | Beggs, OK 74421-2436 | Oil Operator | Mar 2026 |
| 21389 | Paris Valley Petroleum | | Oil Operator | Dec 2004 |
| 21390 | Parish Operating, LLC | Covington, LA 70433 | Oil & Gas Operator | Jul 2026 |
| 21391 | Parish Petroleum Company | Tulsa, OK 74137 | Oil & Gas Operator | Jul 2025 |
| 21392 | Parish, John R. | Andrews, TX 79714 | Oil & Gas Operator | Sep 2026 |
| 21393 | Park & Park Oil Co. | Allen, TX 75002 | Oil & Gas Operator | Sep 2026 |
| 21394 | Park Avenue Exploration Corp | Oklahoma City, OK 73102-5604 | Oil & Gas Operator | Sep 2011 |
| 21395 | Park Avenue Resources, Inc. | San Antonio, TX 78212 | Oil Operator | Sep 2026 |
| 21396 | Park Energy Petroleum LLC | | Oil Operator | Mar 2023 |
| 21397 | Park Exploration Inc | | Oil & Gas Operator | Nov 2012 |
| 21398 | Park Kenneth Y | Skiatook, OK 74070-6060 | Oil & Gas Operator | May 2026 |
| 21399 | Park Oil Properties LLC | Plano, TX 75025 | Oil Operator | Oct 2019 |
| 21400 | Park Robert E | | Oil Operator | May 1983 |