| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Alexander Production Company | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2021 |
| 2 | Alliance Petroleum Co., LLC | Oil & Gas Operator | Dec 2021 | |
| 3 | Alliance Resources Corporation | Dallas, TX 75367 | Oil & Gas Operator | Dec 2024 |
| 4 | Appalachian Energy Inc | Pittsburgh, PA 15220 | Gas Operator | Dec 2008 |
| 5 | Ashland Exploration Properties Inc | Gas Operator | Dec 1996 | |
| 6 | Atlas Energy Corp | Oil & Gas Operator | Nov 2005 |