| 701 | Alliance Operating Corporation | | Oil & Gas Operator | Jan 1995 |
| 702 | Alliance Petroleum Co., LLC | | Oil & Gas Operator | Dec 2021 |
| 703 | Alliance Petroleum Corporation | Canton, OH 44718-2553 | Oil & Gas Operator | Dec 2019 |
| 704 | Alliance Resources (USA), Inc. | | Oil & Gas Operator | Oct 2002 |
| 705 | Alliance Resources Corporation | Dallas, TX 75367 | Oil & Gas Operator | Nov 2024 |
| 706 | Alliance Resources LLC | Midland, TX 79705 | Oil & Gas Operator | Jul 2025 |
| 707 | Allie Oil | | Oil Operator | May 2000 |
| 708 | Allied Energy Corporation | | Oil & Gas Operator | Apr 2025 |
| 709 | Allied Energy Operating, LLC | McKinney, TX 75071 | Oil Operator | Jul 2025 |
| 710 | Allied Energy, Inc. | Saratoga, CA 95070 | Oil & Gas Operator | Dec 2021 |
| 711 | Allied Exploration, Inc. | | Oil & Gas Operator | May 2021 |
| 712 | Allied Oil Compa | | Oil & Gas Operator | Feb 1995 |
| 713 | Allied Oil Company, Inc. | Taneyville, MO 65759 | Oil Operator | Apr 1996 |
| 714 | Allied Oil Field Services LTD | Willoughby, OH 44094 | Oil & Gas Operator | Dec 2021 |
| 715 | Allied Operating LLC | Bowling Green, KY 42101-3980 | Oil & Gas Operator | Sep 2015 |
| 716 | Allied Operating Texas, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 717 | Allied Petroleum Company | | Gas Operator | Dec 1992 |
| 718 | Allied Petroleum Inc. | Oklahoma City, OK 73116-1516 | Oil & Gas Operator | Jun 2014 |
| 719 | Allied Western Petroleum | | Oil & Gas Operator | Apr 2025 |
| 720 | Allied-Gulf Energy, LLC | Lafayette, LA 70508 | Oil & Gas Operator | Jul 2025 |
| 721 | Alligator Rock Well Service LLC | Velma, OK 73491-0627 | Oil & Gas Operator | May 2025 |
| 722 | Allison Bros DRLG Co Inc | | Oil & Gas Operator | Dec 2015 |
| 723 | Allison Dean Oil | | Oil & Gas Operator | Nov 1994 |
| 724 | Allison J A | | Oil & Gas Operator | Nov 1995 |
| 725 | Allison Lease Services LLC | Boerne, TX 78006 | Oil & Gas Operator | Jul 2025 |
| 726 | Allison Oil Comp | | Oil Operator | Dec 1986 |
| 727 | Allison Operating Co., L.C. | Wichita, KS 67202 | Oil & Gas Operator | Dec 1998 |
| 728 | Allison Tom & Shelly Dba T & S Oil Company | Bartlesville, OK 74006-0722 | Oil & Gas Operator | May 2025 |
| 729 | Allison/Hobbs Inc. | Alba, TX 75410 | Oil & Gas Operator | Jul 2025 |
| 730 | Allshouse Terrence L Jr | Grand Valley, PA 16420-1930 | Oil & Gas Operator | Dec 2024 |
| 731 | Allsop Oil And Gas Company, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Nov 1996 |
| 732 | Allstar Oil And Gas Inc. | | Oil & Gas Operator | Nov 1992 |
| 733 | Allstate Energy Corp | Smithville, WV 26178 | Oil & Gas Operator | Dec 2021 |
| 734 | Alltex Exploration, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jul 2025 |
| 735 | Allwaste Oilfield Services Inc | | Oil Operator | May 1996 |
| 736 | Alma Gas Co Inc | Alma, NY 14708 | Gas Operator | Dec 2024 |
| 737 | Almac Engineering | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2007 |
| 738 | Almack John And Glenda | Perry, OK 73077-8819 | Oil & Gas Operator | Apr 2016 |
| 739 | Alme, Henry A. | Cut Bank, MT 59427 | Gas Operator | Mar 2025 |
| 740 | Almond Crest Oil LLC | | Oil & Gas Operator | Apr 2025 |
| 741 | Almont Energy LLC | Kingfisher, OK 73750-0901 | Oil & Gas Operator | Oct 2021 |
| 742 | Aln Resources Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Jan 1993 |
| 743 | Alna Energy LLC | New Lexington, OH 43764 | Oil & Gas Operator | Dec 2023 |
| 744 | Alog, LLC | Brewton, AL 36427 | Oil & Gas Operator | Mar 2025 |
| 745 | Alpar Resources, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jul 2011 |
| 746 | Alpha Coal West Inc | Gillette, WY 82716 | Oil & Gas Operator | Jun 2020 |
| 747 | Alpha Energy | Anson, TX 79501 | Oil & Gas Operator | Oct 2016 |
| 748 | Alpha Energy LLC | Ashland, OR 97520 | Oil & Gas Operator | May 2025 |
| 749 | Alpha Energy Texas Operating LLC | Golden, CO 80401-3275 | Oil & Gas Operator | Apr 2025 |
| 750 | Alpha Exploration Co. | Wichita Falls, TX 76309 | Oil & Gas Operator | Oct 1998 |
| 751 | Alpha Gamma Onshore, LLC | Midland, TX 79702 | Oil Operator | Jul 2025 |
| 752 | Alpha Gas Corporation | Jane Lew, WV 26378 | Oil & Gas Operator | Dec 2007 |
| 753 | Alpha Management | | Oil & Gas Operator | Jan 1994 |
| 754 | Alpha Oil & Gas Inc. | | Oil & Gas Operator | Sep 1989 |
| 755 | Alpha Oil Company | | Oil Operator | Jul 2004 |
| 756 | Alpha Omega Petroleum, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Mar 1996 |
| 757 | Alpha Petro Development Inc | Tulsa, OK 74136-7048 | Oil & Gas Operator | May 2013 |
| 758 | Alpha Petroleum | | Oil & Gas Operator | Jan 2025 |
| 759 | Alpha Petrovision Us Inc | Canada, 00100 | Oil & Gas Operator | May 2013 |
| 760 | Alpha Resources, Inc | | Oil & Gas Operator | Jun 2003 |
| 761 | Alpha Shale Res LP | Canonsburg, PA 15317-9554 | Gas Operator | Aug 2017 |
| 762 | Alpine Drilling | | Oil & Gas Operator | May 1994 |
| 763 | Alpine Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2000 |
| 764 | Alpine Energy Corp. | | Oil & Gas Operator | Jun 2004 |
| 765 | Alpine Energy, Inc. | | Oil & Gas Operator | Dec 1999 |
| 766 | Alpine Expl. Companies, Inc. | | Oil & Gas Operator | Jan 2024 |
| 767 | Alpine Exploration Co, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Nov 2017 |
| 768 | Alpine Gas Company, LLC | Dallas, TX 75201 | Oil & Gas Operator | Oct 2006 |
| 769 | Alpine Gas Operator, LLC | | Oil & Gas Operator | Jun 2024 |
| 770 | Alpine Inc | Oklahoma City, OK 73134-2504 | Oil & Gas Operator | Feb 2024 |
| 771 | Alpine Oil & Gas Corp | Durango, CO 81302 | Gas Operator | Jun 2003 |
| 772 | Alpine Oil & Gas Inc | Edmond, OK 73083-1264 | Oil & Gas Operator | Mar 2008 |
| 773 | Alpine Petroleum | Abilene, TX 79608 | Oil & Gas Operator | Jul 2018 |
| 774 | Alpine Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 775 | Alpine Well Service Inc | | Oil & Gas Operator | Dec 2023 |
| 776 | Alps Oil Company | Odessa, TX 79760 | Oil & Gas Operator | Aug 1999 |
| 777 | Alquip Limited Liability Company | Buckhannon, WV 26201-2049 | Gas Operator | Dec 2021 |
| 778 | Alsid Oil & Gas | Hanoverton,, OH 44423 | Oil & Gas Operator | Dec 2003 |
| 779 | Alsup 1-19 LLC | Lindsay, OK 73052 | Oil Operator | May 2025 |
| 780 | Alt Production, LLC | Kilgore, TX 75663 | Oil Operator | Jul 2025 |
| 781 | Alta Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1995 |
| 782 | Alta Mesa Services, LP | Houston, TX 77084 | Oil & Gas Operator | Jul 2025 |
| 783 | Alta VIsta Oil Corporation | Clearmont, WY 82835 | Oil & Gas Operator | Jul 2021 |
| 784 | Altair Corporation | | Oil & Gas Operator | Jul 1998 |
| 785 | Altair Energy Corp. | Tyler, TX 75702 | Oil & Gas Operator | Jun 1994 |
| 786 | Altalay STX LLC | San Juan, PR 00968 | Oil & Gas Operator | Jul 2025 |
| 787 | Altamont Energy Operating LLC | Greenwood VIlliage, CO 80111 | Oil & Gas Operator | Sep 2024 |
| 788 | Altamont Oil & Gas Inc. | Cut Bank, MT 59427-0200 | Oil & Gas Operator | May 2012 |
| 789 | Altavista Energy, Inc. | Wellsville, KS 66092 | Oil Operator | Mar 2025 |
| 790 | Alteria, LLC | Grayson, KY 41143 | Oil & Gas Operator | Dec 2023 |
| 791 | Alternative Ener | | Oil Operator | Jan 1995 |
| 792 | Altex Energy Corporation | Oklahoma City, OK 73142-1920 | Oil & Gas Operator | Mar 2015 |
| 793 | Altex Inc | Corning, OH 43730 | Oil & Gas Operator | Dec 1985 |
| 794 | Altex Oil Company | Breckenridge, CO 80424 | Oil & Gas Operator | Dec 2005 |
| 795 | Altex Oil Corp | Breckenridge, CO 80424-1057 | Oil & Gas Operator | Dec 1999 |
| 796 | Altex Resources, Inc. | Carney, OK 74832 | Oil & Gas Operator | Mar 2015 |
| 797 | Altex Resources, Inc. (A Texas Corp.) | FT. Worth, TX 76107 | Oil Operator | Apr 1997 |
| 798 | Altheirs Oil, Inc. | Corning, OH 43730 | Oil & Gas Operator | Dec 2024 |
| 799 | Altier Brothers Inc | Corning, OH 43730 | Oil & Gas Operator | Dec 2024 |
| 800 | Altier Petroleum Inc | Corning, OH 43730 | Oil & Gas Operator | Dec 2024 |