| 1401 | Atex Exploration & Operating Co. | Whitesboro, TX 76273 | Oil & Gas Operator | Apr 2024 |
| 1402 | Atf Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 1403 | Atha Edward E | Athens, OH 45701 | Oil & Gas Operator | Dec 1987 |
| 1404 | Athabasca Energy Corporation | Simonton, TX 77476-0364 | Oil & Gas Operator | Dec 2017 |
| 1405 | Athan Inc | Edmond, OK 73013-6628 | Oil & Gas Operator | Dec 2023 |
| 1406 | Athanor Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2002 |
| 1407 | Athena Energy LLC | Toronto, ON M5E 1W7 | Gas Operator | Jan 2011 |
| 1408 | Athena Energy, Inc. | Gallatin, TN 37066 | Oil & Gas Operator | Apr 2024 |
| 1409 | Athena Resources, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Apr 2024 |
| 1410 | Athlon Energy Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2014 |
| 1411 | Athlon Fe Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2015 |
| 1412 | Athlon Holdings LP | Denver, CO 80202 | Oil & Gas Operator | Jan 2015 |
| 1413 | Atinum Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 1414 | Atinum Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 1415 | Atkins Oil L.C. | Conroe, TX 77303 | Oil Operator | Apr 2024 |
| 1416 | Atkins Production | | Oil Operator | Dec 2008 |
| 1417 | Atkinson Energy Corporation | Giddings, TX 78942 | Oil & Gas Operator | Jan 2010 |
| 1418 | Atkinson J V | Midland, TX 79702 | Oil & Gas Operator | Nov 2005 |
| 1419 | Atkinson Operations LLC | Three Rivers, TX 78071 | Oil Operator | Apr 2024 |
| 1420 | Atkinson WM H Estate | Oklahoma City, OK 73156 | Oil & Gas Operator | Nov 2001 |
| 1421 | Atkinson, Jim | Nocona, TX 76255 | Oil & Gas Operator | Apr 2024 |
| 1422 | Atlanko Oil & Gas Inc | Tulsa, OK 74135-7846 | Oil & Gas Operator | Dec 2023 |
| 1423 | Atlanta Exploration Co. | | Oil & Gas Operator | Oct 2001 |
| 1424 | Atlantic Energy Corp Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 1991 |
| 1425 | Atlantic Exploration, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2015 |
| 1426 | Atlantic Oil And Gas Development LLC | Rockledge, FL 32955 | Oil Operator | Dec 2023 |
| 1427 | Atlantic Oil Company | | Oil & Gas Operator | Nov 2023 |
| 1428 | Atlantic Oil Corporation | Denver, CO 80206 | Oil & Gas Operator | Dec 1982 |
| 1429 | Atlantic Operating II, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 1430 | Atlantic Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 1431 | Atlantic Petroleum Co. | | Oil Operator | Mar 2000 |
| 1432 | Atlantic Resources Company, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 1433 | Atlantic Richfield Company | Plano, TX 75094-1744 | Oil & Gas Operator | Dec 2016 |
| 1434 | Atlantis Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Apr 2024 |
| 1435 | Atlantis Oil Cor | | Oil Operator | Sep 1989 |
| 1436 | Atlas Barnett, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2019 |
| 1437 | Atlas Eagle Ford Oper Co, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | May 2020 |
| 1438 | Atlas Energy Corp | | Oil & Gas Operator | Nov 2005 |
| 1439 | Atlas Energy Corporation (Del.) | Oklahoma City, OK 73112 | Oil & Gas Operator | Apr 2024 |
| 1440 | Atlas Energy Group Inc | Uniontown, OH 44685-9575-9575 | Oil & Gas Operator | Dec 2011 |
| 1441 | Atlas Fuel Supply, LTD. | Houston, TX 77269 | Oil Operator | Apr 2024 |
| 1442 | Atlas Growth Texas, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2019 |
| 1443 | Atlas Noble LLC | Fort Worth, TX 76116-5423-5423 | Oil & Gas Operator | Jun 2020 |
| 1444 | Atlas Oil & Gas Exploration, LLC | Cedar Park, TX 78613 | Oil & Gas Operator | Aug 2003 |
| 1445 | Atlas Oil Co, Inc | | Oil Operator | Dec 2014 |
| 1446 | Atlas Oil Company, LLC | Versailles, KY 40383 | Oil Operator | Dec 2022 |
| 1447 | Atlas Oil Exploration, Inc | | Oil & Gas Operator | Dec 1977 |
| 1448 | Atlas Oil Inc | Oklahoma City, OK 73154-0467 | Oil & Gas Operator | Aug 2008 |
| 1449 | Atlas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 1450 | Atlas Production Services | | Oil & Gas Operator | Feb 1999 |
| 1451 | Atlas Resources Inc | Coraopolis, PA 15108-0611 | Oil & Gas Operator | Dec 2007 |
| 1452 | Atlas Resources LLC | Pittsburgh, PA 15275-1033 | Oil & Gas Operator | Jun 2018 |
| 1453 | Atlas Resources LLC Dba Atlas Rockies LLC | | Gas Operator | Jun 2017 |
| 1454 | Atls Production Company LLC | | Gas Operator | Sep 2020 |
| 1455 | Atmic, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jun 2008 |
| 1456 | Atmos Pipeline - Texas | Dallas, TX 75240 | Oil & Gas Operator | Apr 2024 |
| 1457 | Atnipp, H. L. | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 1458 | Atoka Operating Permian, LLC | Addison, TX 75001 | Oil & Gas Operator | Sep 2023 |
| 1459 | Atoka Operating, Inc. | Addison, TX 75001 | Oil & Gas Operator | Apr 2024 |
| 1460 | Atp Oil & Gas Corporation | Houston, TX 77027 | Oil & Gas Operator | Jun 2008 |
| 1461 | Atr Energy Corp | Dallas, TX 75313 | Oil Operator | Feb 2024 |
| 1462 | Atropos Exploration Company | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 1463 | Atropos Production Corporation | Dallas, TX 75225 | Oil & Gas Operator | Apr 2024 |
| 1464 | Attaway Energy Group, Inc. | | Oil & Gas Operator | Aug 1995 |
| 1465 | Atteberry Engineering | Edmond, OK 73013-6624 | Oil & Gas Operator | Mar 2008 |
| 1466 | Attica Central School District | Attica, NY 14011 | Gas Operator | Dec 2022 |
| 1467 | Attica Gas Ventu | | Oil & Gas Operator | Dec 1995 |
| 1468 | Atwa Energy Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 1996 |
| 1469 | Atwell Technical Services, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2024 |
| 1470 | Atwell, David L. | Duncan, OK 73533 | Oil & Gas Operator | Jul 2003 |
| 1471 | Atwood Energy Inc | Port Washington, OH 43837-9214-9214 | Oil & Gas Operator | Dec 1993 |
| 1472 | Atwood Resources Inc | Houston, TX 72151-89-89 | Oil & Gas Operator | Dec 1993 |
| 1473 | Atx Energy Partners LLC | Austin, TX 78716 | Oil & Gas Operator | Feb 2024 |
| 1474 | Auburn Enlarged Central School District | Auburn, NY 13021 | Gas Operator | Dec 2022 |
| 1475 | Auburn Enterprises, Inc. | Kyle, TX 78640 | Oil & Gas Operator | Aug 2003 |
| 1476 | Auden Oil Inc. | Hardin, TX 77561 | Oil Operator | Apr 2024 |
| 1477 | Audrey Oil & Gas LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2024 |
| 1478 | Augerhead Oil LLC | Lewisville, OH 43754 | Oil & Gas Operator | Dec 2022 |
| 1479 | August Oil | Plano, TX 75093 | Oil & Gas Operator | Aug 2003 |
| 1480 | Augusta Oil & Gas | Abilene, TX 79604 | Oil & Gas Operator | Nov 2002 |
| 1481 | Augusta Oil & Gas Inc | Abilene, TX 79604 | Oil & Gas Operator | Dec 2015 |
| 1482 | Augustus Energy Partners LLC | Billings, MT 59102 | Oil & Gas Operator | Feb 2014 |
| 1483 | Augustus Energy Resources LLC | | Oil & Gas Operator | Jun 2018 |
| 1484 | Augustus Oil And Gas Corporation | Austin, TX 78731 | Oil & Gas Operator | Apr 2024 |
| 1485 | Auora Natural Gas & Assoc Prod | Dallas, TX 75205 | Oil & Gas Operator | Dec 2000 |
| 1486 | Aurora Energy LTD | Traverse City, MI 49684 | Oil & Gas Operator | Dec 2006 |
| 1487 | Aurora Exploration & Prod Co | Whitesboro, TX 76273 | Oil Operator | Apr 2024 |
| 1488 | Aurora Gas LLC. | | Oil & Gas Operator | Dec 2017 |
| 1489 | Aurora Gas, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jan 2000 |
| 1490 | Aurora Operating, LLC | Houston, TX 77010 | Oil Operator | Apr 2024 |
| 1491 | Aurora Power Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Aug 2018 |
| 1492 | Aurora Resources Corporation | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2024 |
| 1493 | Aurora USA Development, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2014 |
| 1494 | Aus-Tex Exploration Inc | | Oil & Gas Operator | Jan 2024 |
| 1495 | Ausanka Oil Operations | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1995 |
| 1496 | Ausland Production Company | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 1497 | Ausmus & Clark Oil | | Oil Operator | Jul 2022 |
| 1498 | Auster Oil And Gas, Inc. | | Oil & Gas Operator | Mar 1989 |
| 1499 | Auster Oil And Gas, Inc. Et Al | | Oil & Gas Operator | May 2001 |
| 1500 | Austex Energy, Inc. | Granbury, TX 76048 | Oil & Gas Operator | Apr 1993 |