| 21601 | Paystone Oil Corporation | Tulsa, OK 74105 | Oil Operator | Mar 2009 |
| 21602 | PB Oil Company | Vernon, TX 76385 | Oil & Gas Operator | Oct 2023 |
| 21603 | Pbex Operating, LTD. | Midland, TX 79702 | Oil & Gas Operator | Apr 2017 |
| 21604 | Pbex Operations, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 21605 | Pbex-MCM Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 21606 | PBT Enterprises Inc | Garber, OK 73738 | Oil & Gas Operator | Jun 2023 |
| 21607 | PCL Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Jan 2026 |
| 21608 | Pcore Exploration & Prod II LLC | Golden, CO 80401 | Oil & Gas Operator | Jun 2020 |
| 21609 | PCR Operating LLC | | Oil & Gas Operator | Jul 2024 |
| 21610 | PD Valentine Oil & Gas LLC | Newport, OH 45768 | Oil & Gas Operator | Dec 2024 |
| 21611 | PDC Corporation | | Oil & Gas Operator | Jan 2011 |
| 21612 | PDC Energy | Denver, CO 80203 | Oil & Gas Operator | Nov 2012 |
| 21613 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Jan 2026 |
| 21614 | PDC Mountaineer LLC | Bridgeport, WV 26330-9665 | Oil & Gas Operator | Dec 2017 |
| 21615 | PDC Permian, Inc. | Midland, TX 79706 | Oil & Gas Operator | Apr 2026 |
| 21616 | PDC-WV-Co Corporation | Denver, CO 80203 | Oil & Gas Operator | Aug 2010 |
| 21617 | Pdeh LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 21618 | PDG Production LLC | Stroud, OK 74079 | Oil & Gas Operator | Jan 2026 |
| 21619 | PDH Enterprises | Pittsburg, TX 75686 | Oil & Gas Operator | Apr 2019 |
| 21620 | PDQ Oil & Gas LLC | The Plains, OH 45780 | Oil & Gas Operator | Dec 2025 |
| 21621 | PDS Resources LLC | | Oil & Gas Operator | Jan 2026 |
| 21622 | Pe - Osage, LLC | | Oil Operator | Jan 2026 |
| 21623 | Pe - Texas, LLC | Oklahoma City, OK 73113 | Oil Operator | Apr 2026 |
| 21624 | Peabody Natural Gas LLC | Gillette, WY 82718 | Oil & Gas Operator | Feb 2026 |
| 21625 | Peach Creek Operating Co, LLC | Houston, TX 77219 | Oil & Gas Operator | Apr 2026 |
| 21626 | Peachridge Energy Operating LLC | Oklahoma City, OK 73159 | Oil & Gas Operator | Feb 2026 |
| 21627 | Peachtree Production Co. | | Oil & Gas Operator | Mar 1981 |
| 21628 | Peacock, Scott | Edmonton, KY 42129 | Oil Operator | Dec 2023 |
| 21629 | Peak Energy Co Inc | | Oil & Gas Operator | Mar 1985 |
| 21630 | Peak Energy Corporation | Plano, TX 75093 | Oil & Gas Operator | Oct 2018 |
| 21631 | Peak Energy LLC | Coffeyville, KS 67337 | Oil & Gas Operator | Dec 2025 |
| 21632 | Peak Energy Operating #2, LLC | Durango, CO 81301 | Oil & Gas Operator | Jun 2006 |
| 21633 | Peak Flow Operating&Drilling LP | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2011 |
| 21634 | Peak Natural Gas Co., LLC | Dallas, TX 75225 | Oil & Gas Operator | Sep 2010 |
| 21635 | Peak Nebraska Acquisitions, LLC | | Oil Operator | Dec 2010 |
| 21636 | Peak Oil Company LLC | Branson West, MO 65737 | Oil Operator | Dec 2009 |
| 21637 | Peak Operating Co. | | Oil & Gas Operator | Jul 2024 |
| 21638 | Peak Operating LLC | Oklahoma City, OK 73157 | Oil & Gas Operator | Dec 2025 |
| 21639 | Peak Operating Of Texas, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2005 |
| 21640 | Peak Operating Oil & Gas LLC | Wichita, KS 67226 | Oil & Gas Operator | Jan 2026 |
| 21641 | Peak Operator LLC | | Oil & Gas Operator | Dec 2025 |
| 21642 | Peak Pipeline Company | Plano, TX 75093 | Oil & Gas Operator | Oct 2007 |
| 21643 | Peak Powder River Resources LLC | Durango, CO 81301 | Oil & Gas Operator | Jan 2026 |
| 21644 | Peak Texas Resources, LLC | Durango, CO 81301 | Oil & Gas Operator | Mar 2017 |
| 21645 | Peake Operating Company | | Oil & Gas Operator | Dec 1999 |
| 21646 | Peakview Oil Company LLC | Denver, CO 80202 | Gas Operator | Feb 2026 |
| 21647 | Peakview Operating Company, LLC | | Oil & Gas Operator | Jan 2026 |
| 21648 | Pearce Leonard | Manderson, WY 82432 | Oil Operator | Dec 1999 |
| 21649 | Pearce Mary | | Oil Operator | Dec 1999 |
| 21650 | Pearce Oil Company | Manderson, WY 82432 | Oil Operator | Jun 1999 |
| 21651 | Pearce Trust And Blair | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 21652 | Pearce, Roy F., Jr. | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 21653 | Pearl Energy, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Apr 2002 |
| 21654 | Pearl Oil Company | Nichols Hills, OK 73120-1408 | Oil & Gas Operator | Nov 2023 |
| 21655 | Pearl Petroleum Inc | Lawton, OK 73501-5821 | Oil & Gas Operator | Jan 2014 |
| 21656 | Pearl Resources Inc. | | Oil & Gas Operator | Jul 1990 |
| 21657 | Pearl Resources Operating Co.LLC | Houston, TX 77024 | Oil & Gas Operator | Apr 2026 |
| 21658 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Apr 2026 |
| 21659 | Pearsall Jarrett | Delaware, OK 74027-1065 | Oil Operator | Jan 2026 |
| 21660 | Pearsall Partners | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 21661 | Pearson, A. K. | Amarillo, TX 79114 | Oil & Gas Operator | Aug 2023 |
| 21662 | Pearson, Lee Roy III | Eastland, TX 76448 | Oil & Gas Operator | Apr 2026 |
| 21663 | Pearson, Lee Roy, Jr. | Eastland, TX 76448 | Oil & Gas Operator | Nov 1997 |
| 21664 | Pease George W Jr | Fairfax, OK 74637 | Oil & Gas Operator | Mar 1998 |
| 21665 | Pease Oil & Gas Company | Grand Junction, CO 81506 | Oil & Gas Operator | May 2000 |
| 21666 | Pease, Willard H | Grand Junction, CO 81502 | Gas Operator | May 1995 |
| 21667 | Peba Oil & Gas Co. | Wichita Falls, TX 76302 | Oil & Gas Operator | Jun 2015 |
| 21668 | Peba Oil & Gas, Inc. | Nocona, TX 76255 | Oil & Gas Operator | Apr 2026 |
| 21669 | Pecanosa Oil & Cattle Co. | New Braunfels, TX 78132 | Gas Operator | May 2013 |
| 21670 | Peccary Corporation | Lubbock, TX 79453 | Oil & Gas Operator | Aug 2003 |
| 21671 | Pech Oil Co., No. 2 | Midland, TX 79702 | Oil & Gas Operator | Apr 2013 |
| 21672 | Pech Oil Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2013 |
| 21673 | Peckenpaugh Farms | Farnsworth, TX 79033 | Oil & Gas Operator | Apr 2026 |
| 21674 | Peco Foods, Inc. | | Oil & Gas Operator | Jan 2026 |
| 21675 | Pecora Enterprises | Bradford, PA 16701-1026 | Oil & Gas Operator | Dec 1999 |
| 21676 | Pecos Country Operating Inc. | N Richlnd HLS, TX 76182 | Oil Operator | Apr 2026 |
| 21677 | Pecos Crude LLC | Sugar Land, TX 77479 | Oil Operator | Apr 2026 |
| 21678 | Pecos Development Corporation | San Antonio, TX 78209 | Oil Operator | Aug 1988 |
| 21679 | Pecos Operating Company, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2021 |
| 21680 | Pecos Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 21681 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 21682 | Pecos Production Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2005 |
| 21683 | Pecos River Exploration, LLC | Allen, TX 75013 | Oil & Gas Operator | Jun 2025 |
| 21684 | Pecos River Op Inc | Roswell, NM 88202 | Oil & Gas Operator | Dec 2020 |
| 21685 | Pecos Valley Management Co. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2008 |
| 21686 | Pecos Valley Operating Inc. | N Richlnd HLS, TX 76182 | Oil & Gas Operator | Apr 2026 |
| 21687 | Pecos Western Corporation | | Gas Operator | Feb 1992 |
| 21688 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 21689 | Pedco Inc | | Oil & Gas Operator | Nov 1997 |
| 21690 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 21691 | Pedeco, Inc. | Casper, WY 82601 | Oil & Gas Operator | Mar 2008 |
| 21692 | Peden Energy | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2004 |
| 21693 | Peden Energy, Inc. | Wolfforth, TX 79382 | Oil & Gas Operator | Apr 2026 |
| 21694 | Peden, Marshell | Archer City, TX 76351 | Oil & Gas Operator | Apr 2026 |
| 21695 | Peden, Oren Inc. | Levelland, TX 79336 | Oil & Gas Operator | May 2001 |
| 21696 | Pedernales Petroleum Op, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 21697 | Pedernales Petroleum Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 21698 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 21699 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 21700 | Pedgeco Inc | Cleveland, OH 44115 | Oil & Gas Operator | Dec 1984 |