| 1601 | Austin, Robert E. | Miami, OK 74354 | Oil Operator | Dec 1995 |
| 1602 | Austral Oil & Exploration, Inc | | Oil & Gas Operator | Jun 2004 |
| 1603 | Austral Oil Co., Inc.-McCord | | Oil & Gas Operator | Oct 1977 |
| 1604 | Austral Oil Company Incorporated | Sulphur, LA 70663 | Oil & Gas Operator | Mar 2008 |
| 1605 | Australis TMS Inc. | | Oil & Gas Operator | Dec 2024 |
| 1606 | Auten Operating Company, Inc. | Houston, TX 77242 | Oil & Gas Operator | May 1998 |
| 1607 | Auterra Operating, LLC | Friendswood, TX 77549 | Oil & Gas Operator | Feb 2026 |
| 1608 | Autry C. Stephens | Midland, TX 79701 | Oil & Gas Operator | Dec 2001 |
| 1609 | Autry Producing Co. | Cisco, TX 76437 | Oil & Gas Operator | Aug 2008 |
| 1610 | Autry Producing Inc. | Cisco, TX 76437 | Oil Operator | Feb 2026 |
| 1611 | Autry, Martin | Seguin, TX 78155 | Oil Operator | Feb 2026 |
| 1612 | Autumn Energy LLC | Andrews, TX 79714 | Oil Operator | Aug 2017 |
| 1613 | Autumn Energy Operating | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 1614 | Autumn Exploration LTD | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2015 |
| 1615 | Autumn Ridge Energy LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2021 |
| 1616 | Autumn Ridge Enterprises LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2017 |
| 1617 | Av-Tech Resources Corporation | Kerrville, TX 78028 | Oil & Gas Operator | Jul 2022 |
| 1618 | Ava Gas Corp | Columbus, OH 43215 | Oil & Gas Operator | Dec 2013 |
| 1619 | Avad Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 1620 | Avalanche Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Feb 2026 |
| 1621 | Avalon Energy Corporation | | Oil & Gas Operator | Jul 1990 |
| 1622 | Avalon Exploration Inc | Tulsa, OK 74119-5401 | Oil & Gas Operator | Dec 2019 |
| 1623 | Avalon Operating LLC | Tulsa, OK 74119-5401 | Oil & Gas Operator | Nov 2025 |
| 1624 | Avalon TX Operating, LLC | Andrews, TX 79714 | Oil & Gas Operator | Jan 2023 |
| 1625 | Avant Jack E | Skiatook, OK 74070 | Oil Operator | Jan 2013 |
| 1626 | Avant Operating II, LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 1627 | Avant Operating, LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 1628 | Avanti Exploration La, LLC | | Oil & Gas Operator | Nov 2024 |
| 1629 | Avanti Petroleum, Inc. | Wichita, KS 67233 | Gas Operator | Dec 2007 |
| 1630 | Avatar Energy LLC | Dallas, TX 75220-2230 | Oil & Gas Operator | Jul 2016 |
| 1631 | Aven Gas & Oil Inc | Oklahoma City, OK 73113-0491 | Oil & Gas Operator | Nov 2021 |
| 1632 | Averill, W. M. Inc. | Victoria, TX 77902 | Oil & Gas Operator | Jun 2003 |
| 1633 | Avers Harvey G Energy Expl | | Oil & Gas Operator | May 2013 |
| 1634 | Avery Cheryl L | Clarion, PA 16214-7624 | Gas Operator | Dec 2025 |
| 1635 | Avery Oil & Gas, L.P. | Buena VIsta, CO 81211 | Gas Operator | Dec 2006 |
| 1636 | Avery, Irving W. | Buena VIsta, CO 81211 | Oil & Gas Operator | Mar 2008 |
| 1637 | Avian Tech International, Inc. | Euless, TX 76040 | Oil & Gas Operator | Apr 1995 |
| 1638 | Aviara Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2002 |
| 1639 | Avid Energy Assets LLC | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 1640 | Avighna Energy Inc | Sugar Land, TX 77487 | Oil & Gas Operator | Jan 2019 |
| 1641 | Avips Petroleum, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Jun 1996 |
| 1642 | Aviva America, Inc. | | Oil & Gas Operator | Nov 2013 |
| 1643 | Avoca Farms LTD | Avoca, NY 14809 | Gas Operator | Dec 2024 |
| 1644 | Avon Energy Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 1996 |
| 1645 | Avondale Operating Co | Tulsa, OK 74145-7627 | Oil & Gas Operator | Apr 2019 |
| 1646 | Avra Oil Co | Dallas, TX 75248 | Oil & Gas Operator | Feb 2026 |
| 1647 | Aw Hembree Co | Shawnee, OK 74802-1725 | Oil & Gas Operator | Nov 2025 |
| 1648 | Aw Tipka Oil & Gas Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2024 |
| 1649 | Awp Operating Company | George West, TX 78022 | Oil & Gas Operator | Feb 2026 |
| 1650 | Ax Operating, L.L.C. | | Oil & Gas Operator | Jul 2018 |
| 1651 | Axem Resources I | | Oil Operator | Aug 1995 |
| 1652 | Axem Resources Inc | Denver, CO 80202-4617 | Oil & Gas Operator | Jul 2013 |
| 1653 | Axeon Energy Operations LLC | Evergreen, CO 80439-7624 | Oil Operator | Jul 2015 |
| 1654 | Axia Energy II LLC | HGHLNDS Ranch, CO 80129 | Oil & Gas Operator | Jan 2020 |
| 1655 | Axia Energy III LLC | Highlands Ranch, CO 80129 | Oil & Gas Operator | Sep 2025 |
| 1656 | Axia Energy LLC | Hghlands Ranch, CO 80129-2258 | Oil & Gas Operator | Apr 2015 |
| 1657 | Axio Production Company, L.P. | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2006 |
| 1658 | Axiom Energy LLC | Park City, UT 84098 | Oil Operator | Feb 2010 |
| 1659 | Axiom Tep, LLC | | Oil & Gas Operator | May 2015 |
| 1660 | Axis Energy Corporation | Roswell, NM 88202 | Oil & Gas Operator | Feb 2026 |
| 1661 | Axis Exploration LLC | | Oil & Gas Operator | Dec 2025 |
| 1662 | Axis Onshore, LLC | | Oil & Gas Operator | Apr 2008 |
| 1663 | Axis Onshore, LP | | Oil & Gas Operator | Dec 2010 |
| 1664 | Axis Petroleum Co. | | Oil & Gas Operator | Dec 2022 |
| 1665 | Axp Energy, Inc | Lexington, KY 40509 | Oil & Gas Operator | Dec 2023 |
| 1666 | Axtel Energy, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Feb 2026 |
| 1667 | Aycox Robert D | Healdton, OK 73438 | Oil Operator | Sep 2022 |
| 1668 | Ayers Energy, Inc. | Oklahoma City, OK 73177 | Oil & Gas Operator | Dec 1995 |
| 1669 | Ayers Oil Co. | Crystal City, TX 78839 | Oil & Gas Operator | Sep 1995 |
| 1670 | Ayers, Milan R. | | Gas Operator | Oct 2000 |
| 1671 | Ayers, R.B. | Sidney, TX 76474 | Oil & Gas Operator | Apr 2003 |
| 1672 | Ayluma Operating Inc | Dewar, OK 74437 | Oil & Gas Operator | Oct 2024 |
| 1673 | Aylward Drilling | | Oil & Gas Operator | Dec 1986 |
| 1674 | Ayres Oil, Inc. | Holliday, TX 76366 | Oil & Gas Operator | Aug 2003 |
| 1675 | Ayres, C. D. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 1676 | Ayres, Joe D. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2004 |
| 1677 | Azalea Oil Company LLC | Castle Rock, CO 80108 | Oil Operator | Jan 2026 |
| 1678 | Azar Marsha | Chicago, IL 60618 | Oil Operator | Jan 2025 |
| 1679 | Azariah Operating, LLC | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 1680 | Azco Opr Co | Phoenix, AZ 85076-0535 | Oil & Gas Operator | Dec 2001 |
| 1681 | Azimuth Energy, LLC | Denver, CO 80203 | Oil & Gas Operator | Sep 2006 |
| 1682 | Azkan Oil & Gas LLC | | Oil Operator | Jul 2024 |
| 1683 | Aztec Drilling & Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2015 |
| 1684 | Aztec Energy Corporation | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2002 |
| 1685 | Aztec Energy, LLC | Wichita Falls, TX 76301 | Oil Operator | Feb 2026 |
| 1686 | Aztec Exploration Inc | Oklahoma City, OK 73143 | Oil & Gas Operator | May 2013 |
| 1687 | Aztec Gas And Oil Corporation | Elephant Butte, NM 87935-0370 | Oil & Gas Operator | Mar 2005 |
| 1688 | Aztec Oil & Gas Company | | Oil & Gas Operator | Mar 1978 |
| 1689 | Aztec Oil & Gas Company "A" | Wichita Falls, TX 76309 | Oil & Gas Operator | Sep 2010 |
| 1690 | Aztec Oil Co | | Oil & Gas Operator | Dec 1977 |
| 1691 | Aztec Oil Operating LLC | El Dorado, KS 67042 | Oil & Gas Operator | Sep 2025 |
| 1692 | Aztec Petroleum Corp. | Dallas, TX 75230 | Oil & Gas Operator | Oct 1994 |
| 1693 | Aztec Producing Company Inc | | Oil Operator | Dec 2016 |
| 1694 | Aztec Production Company | | Oil & Gas Operator | Jan 1996 |
| 1695 | Aztec-Solatex | | Gas Operator | Aug 1978 |
| 1696 | Azteca Operating, Inc. | Electra, TX 76360 | Oil Operator | Feb 2026 |
| 1697 | Azteca Petroleum, LLC | Fort Worth, TX 76106 | Oil & Gas Operator | Feb 2026 |
| 1698 | Aztel Operating Inc. | Windthorst, TX 76389 | Oil Operator | Oct 2003 |
| 1699 | Aztex Petroleum | Chandler, AZ 85249 | Oil & Gas Operator | Feb 2026 |
| 1700 | Azul Operating, LLC | | Gas Operator | Dec 2024 |