| 21201 | Paluxy Sands Corporation | Sonora, TX 76950 | Oil & Gas Operator | Jun 2012 |
| 21202 | Pam-Ark Oil Producers | | Oil Operator | Dec 1985 |
| 21203 | Pampa Water Disposal, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jun 2026 |
| 21204 | Pan American Energy Corporation | | Oil & Gas Operator | Dec 1998 |
| 21205 | Pan American Petroleum Cor | | Oil & Gas Operator | Dec 1981 |
| 21206 | Pan American Petroleum Corp | | Oil & Gas Operator | Nov 1988 |
| 21207 | Pan American Sales Corporation | Dallas, TX 75202 | Oil & Gas Operator | Mar 2001 |
| 21208 | Pan Energy Company, Inc. | Orchard Park, NY 14127 | Oil & Gas Operator | Dec 2024 |
| 21209 | Pan Petroleum Corp. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 21210 | Pan Petroleum MLP | Kansas City, MO 64114 | Oil & Gas Operator | Aug 1997 |
| 21211 | Pan Resources, Inc. | Borger, TX 79007 | Oil & Gas Operator | Mar 2008 |
| 21212 | Pan Texas Petroleum Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2003 |
| 21213 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Jun 2026 |
| 21214 | Pan Western Petroleum Co. | | Oil & Gas Operator | Dec 1993 |
| 21215 | Pan-Ok Production Company | | Oil & Gas Operator | Nov 2024 |
| 21216 | Panaco Production Co | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 21217 | Panaco, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2026 |
| 21218 | Panada Exploration, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1996 |
| 21219 | Panadero Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 2002 |
| 21220 | Panama Central School District | Panama, NY 14767 | Gas Operator | Dec 2024 |
| 21221 | Panamerican Operating Inc | Dallas, TX 75219 | Oil & Gas Operator | Jun 2026 |
| 21222 | Pancanadian Petr | | Oil Operator | Aug 1990 |
| 21223 | Pancanadian Petroleum Company | | Oil & Gas Operator | Oct 1989 |
| 21224 | Panda Pipe & Equipment, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1996 |
| 21225 | Panenergy La Intrastate Co | | Oil Operator | Mar 2000 |
| 21226 | Panenergy Services Inc | Houston, TX 77525 | Oil & Gas Operator | May 2001 |
| 21227 | Panexco Operating LLC | Oklahoma City, OK 73103-2203 | Oil & Gas Operator | Oct 2014 |
| 21228 | Pangaea Exploration Corp | Edmond, OK 73013 | Oil & Gas Operator | May 2019 |
| 21229 | Pangborn Tom Dba Pangborn Exploration | | Oil & Gas Operator | Jan 1993 |
| 21230 | Pangea Corporation | San Angelo, TX 76904 | Oil & Gas Operator | Jun 2026 |
| 21231 | Pangea'S Edge Operating Company LLC | Plano, TX 75025 | Oil & Gas Operator | Jun 2026 |
| 21232 | Panhandle Easter | | Gas Operator | Dec 1986 |
| 21233 | Panhandle Eastern Pipeline Company LP | Houston, TX 77002-6803 | Oil & Gas Operator | Oct 1999 |
| 21234 | Panhandle Oil & Gas Consultants Inc | Woodward, OK 73802-5011 | Oil & Gas Operator | Jul 2015 |
| 21235 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 21236 | Panhandle Oilfield Service Companies Inc | Liberal, KS 67905-1256 | Oil Operator | Sep 2000 |
| 21237 | Panhandle Petrol | | Oil Operator | Jun 1987 |
| 21238 | Panhandle Producing Co., Oper. | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 21239 | Panhandle Producing Company | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 21240 | Pannonian Energy Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2004 |
| 21241 | Panoak Oil & Gas Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Aug 2018 |
| 21242 | Panoche Vallecitos Oil Co. | | Oil & Gas Operator | Dec 2025 |
| 21243 | Panola Corporation, The | Dallas, TX 75252 | Oil & Gas Operator | Sep 2002 |
| 21244 | Panotech Exploration Corp. | | Oil & Gas Operator | Jan 1983 |
| 21245 | Pantano Energy | San Antonio, TX 78258 | Oil & Gas Operator | Jul 1999 |
| 21246 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2026 |
| 21247 | Pantex Oil & Gas LLC | Ranger, TX 76470 | Oil & Gas Operator | Jul 2018 |
| 21248 | Panther Bayou Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2021 |
| 21249 | Panther City Energy LLC | San Antonio, TX 78205 | Oil & Gas Operator | Jun 2026 |
| 21250 | Panther Creek Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2012 |
| 21251 | Panther Energy Company III LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2020 |
| 21252 | Panther Energy Company, LLC | Tulsa, OK 74103 | Oil & Gas Operator | May 2022 |
| 21253 | Panther Exploration, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2017 |
| 21254 | Panther Operating LLC | Pauls Valley, OK 73075 | Oil & Gas Operator | Jan 2026 |
| 21255 | Paoco-Walker | | Gas Operator | Sep 2011 |
| 21256 | Paoli Investors LTD | | Oil & Gas Operator | Aug 1985 |
| 21257 | Pap Oil Company Inc | Cement, OK 73017-0240 | Oil & Gas Operator | Nov 1998 |
| 21258 | Papal Enterprises Inc | Oklahoma City, OK 73154-1555 | Oil & Gas Operator | Apr 2015 |
| 21259 | Papco, Inc. | Warren, PA 16365 | Oil & Gas Operator | Jun 2026 |
| 21260 | Pape Oilfield Service Inc | | Oil & Gas Operator | Dec 2012 |
| 21261 | Papesch Robert J | Waterford, PA 16441-4607 | Gas Operator | Dec 2025 |
| 21262 | Papineau Drilling, Inc | Albany, KY 42602 | Oil Operator | Dec 2014 |
| 21263 | Pappe Court Jr | Kingfisher, OK 73750-0688 | Oil & Gas Operator | Nov 2001 |
| 21264 | Par Development | Midland, TX 79711 | Oil & Gas Operator | Jun 2026 |
| 21265 | Par Exploration Co | | Oil & Gas Operator | Oct 1986 |
| 21266 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2026 |
| 21267 | Par Oil Company Inc | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 21268 | Par Oil Corporation | | Oil & Gas Operator | Sep 1990 |
| 21269 | Par Oil Corporation, Et Al | | Oil & Gas Operator | Dec 1984 |
| 21270 | Par Pacific Holdings Inc | | Oil & Gas Operator | Jun 2010 |
| 21271 | Par Petroleum In | | Oil & Gas Operator | Jun 1993 |
| 21272 | Par Petroleum, Inc. | Liberal, KS 67901 | Gas Operator | Dec 2009 |
| 21273 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 21274 | Par, Inc. | Oklahoma City, OK 73111 | Oil Operator | May 2016 |
| 21275 | Par-Co Drilling Inc. | | Oil Operator | Dec 2023 |
| 21276 | Par-Naylor | | Oil Operator | Mar 1985 |
| 21277 | Para Pro Corporation | Sedona, AZ 86336-5745 | Oil & Gas Operator | Jan 2005 |
| 21278 | Parabellum Energy Oper Co, LLC | Houston, TX 77056 | Oil Operator | Dec 2017 |
| 21279 | Paradigm Energy LLC | Lenexa, KS 66227 | Oil & Gas Operator | Dec 2024 |
| 21280 | Paradigm Energy-Mississippi, LLC | | Oil Operator | Dec 2025 |
| 21281 | Paradigm Exploration Company | Dallas, TX 75214 | Oil Operator | Sep 2020 |
| 21282 | Paradigm Exploration, L.P. | La Grange, TX 78945 | Oil Operator | Sep 2008 |
| 21283 | Paradigm Petroleum Corporation | Abilene, TX 79605 | Oil & Gas Operator | Jun 2026 |
| 21284 | Paradigm Twenty LLC | Stillwater, OK 74074-1745 | Oil & Gas Operator | Jan 2026 |
| 21285 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 21286 | Paradise Creek Oil & Gas | Plainville, KS 67663 | Oil Operator | Dec 2025 |
| 21287 | Paradox Petroleum Company | Amarillo, TX 79114-7587 | Oil & Gas Operator | Dec 1998 |
| 21288 | Paradox Upstream, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 21289 | Paragon Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jun 2026 |
| 21290 | Paragon Energy, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Jun 2026 |
| 21291 | Paragon Industries Inc | Sapulpa, OK 74066-6987 | Oil Operator | Mar 2026 |
| 21292 | Paragon Oil & Gas, LLC | Aledo, TX 76008 | Oil & Gas Operator | Jun 2026 |
| 21293 | Paragon Oil Co | | Oil & Gas Operator | Oct 1991 |
| 21294 | Paragon Production Company | Edmond, OK 73013-5051 | Oil & Gas Operator | Feb 2021 |
| 21295 | Paragon Resources, Inc | | Oil & Gas Operator | Nov 1991 |
| 21296 | Paragon Trading Co., LLC | | Oil Operator | Dec 2009 |
| 21297 | Parallel Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2015 |
| 21298 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 21299 | Parallel Petroleum LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2026 |
| 21300 | Paraluxe Oil & Gas, LLC | Eunice, NM 88231 | Oil & Gas Operator | Jun 2026 |