| 20301 | Monterey Pipeline Co. | | Oil Operator | Aug 1993 |
| 20302 | Monterey Production Company LLC | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 20303 | Monterey Resources Inc. | | Oil & Gas Operator | Dec 1997 |
| 20304 | Monterey Resources LLC | Dallas, TX 75230 | Oil & Gas Operator | Oct 2019 |
| 20305 | Montex Drilling Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 20306 | Montex Exploration | Sugarland, TX 77478 | Oil Operator | Apr 2003 |
| 20307 | Montex Exploration Company | Houston, TX 77057 | Oil & Gas Operator | Mar 2011 |
| 20308 | Montgomery Count | | Oil Operator | Dec 1992 |
| 20309 | Montgomery Exploration Co LTD | Dallas, TX 75204-2634 | Oil & Gas Operator | Dec 2025 |
| 20310 | Montgomery Jake E | Henryetta, OK 74437 | Oil & Gas Operator | Sep 2025 |
| 20311 | Montgomery Oil & Gas Expl Inc | Tulsa, OK 74170-1884 | Oil & Gas Operator | Mar 2005 |
| 20312 | Montgomery Oil Co | | Oil Operator | Dec 2018 |
| 20313 | Montgomery Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2007 |
| 20314 | Montgomery Production & Operating LLC | Herington, KS 67449 | Oil & Gas Operator | Sep 2025 |
| 20315 | Montgomery Royalty | Moran, TX 76464 | Oil & Gas Operator | Feb 2026 |
| 20316 | Montlar Oil | Spencer, WV 25276-0000 | Gas Operator | Dec 2020 |
| 20317 | Montrose Operating LLC | Broken Arrow, OK 74012 | Oil & Gas Operator | Feb 2026 |
| 20318 | Monty L Hott Production Corporation | Oklahoma City, OK 73142 | Oil & Gas Operator | Nov 2025 |
| 20319 | Monument Gas Marketing Inc | | Oil & Gas Operator | Dec 2025 |
| 20320 | Monument Global Resources Inc | Dallas, TX 75243 | Oil & Gas Operator | Jan 2025 |
| 20321 | Monument Production Inc. | | Oil & Gas Operator | Dec 2011 |
| 20322 | Monument Resources, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Jun 2012 |
| 20323 | Moody Energy Co. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2004 |
| 20324 | Moody Oil & Gas Co. | Bridgeport, WV 26330-1051 | Oil & Gas Operator | Dec 2004 |
| 20325 | Moody Oil Co. | Pearsall, TX 78061 | Oil & Gas Operator | Feb 2026 |
| 20326 | Moody Oil LLC | Henderson, KY 42420 | Oil Operator | Dec 2022 |
| 20327 | Moog Incorporated | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 20328 | Moon & Hines | | Oil & Gas Operator | Nov 1982 |
| 20329 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 20330 | Moon-Hines-Tigrett Operating Co., Inc. | | Oil & Gas Operator | Sep 2025 |
| 20331 | Moon-Hines-Tigrett Opr Co Inc | | Oil & Gas Operator | Oct 1995 |
| 20332 | Moonlite Oil & Gas Company | Imperial, TX 79743 | Oil & Gas Operator | Feb 2026 |
| 20333 | Moonshine Energy, LLC | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 20334 | Moonshine Resources, LLC | Midland, TX 79707 | Oil Operator | Feb 2026 |
| 20335 | Moontower Resources Op, LLC | Austin, TX 78732 | Oil & Gas Operator | Apr 2025 |
| 20336 | Moore & Associates | Denver, CO 80202 | Oil & Gas Operator | Dec 1993 |
| 20337 | Moore & Gilmore | Midland, TX 79701 | Oil & Gas Operator | Oct 2008 |
| 20338 | Moore & Moore Energy Inc | Purcell, OK 73080-0674 | Oil & Gas Operator | Dec 2012 |
| 20339 | Moore Clay | Bradenton, FL 34211 | Oil & Gas Operator | Nov 2025 |
| 20340 | Moore County Gas Partners, L.P. | Borger, TX 79007 | Gas Operator | Feb 2026 |
| 20341 | Moore David K | Duncan, OK 73575 | Oil & Gas Operator | Oct 2009 |
| 20342 | Moore Don | Elmore City, OK 73433 | Oil & Gas Operator | Nov 2025 |
| 20343 | Moore DRLG LLC | MT Vernon, OH 43050 | Oil Operator | Dec 2024 |
| 20344 | Moore Energy Services, LLC | Iowa Park, TX 76367 | Oil Operator | Mar 2024 |
| 20345 | Moore Gas And Oil | Monahans, TX 79756 | Oil Operator | Feb 2026 |
| 20346 | Moore Investment Co. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 20347 | Moore Investments LC | Oklahoma City, OK 73116-9044 | Oil & Gas Operator | Feb 2023 |
| 20348 | Moore Lynn D | Collinsville, OK 74021 | Oil Operator | Aug 2013 |
| 20349 | Moore McCormack | | Gas Operator | Feb 1991 |
| 20350 | Moore McCormack Energy, Inc. | | Oil & Gas Operator | Jul 1988 |
| 20351 | Moore Michael | MT Vernon, OH 43050 | Oil & Gas Operator | Dec 2013 |
| 20352 | Moore Norman L | Sasakwa, OK 74867 | Oil Operator | Nov 2025 |
| 20353 | Moore Oil & Gas-Marion Corp. | | Oil & Gas Operator | Nov 1986 |
| 20354 | Moore Oil And Gas | Burleson, TX 76028 | Oil & Gas Operator | Feb 2026 |
| 20355 | Moore Petroleum Invest Corp | Norman, OK 73072-4217 | Oil & Gas Operator | Oct 2025 |
| 20356 | Moore Resources LLC | Mogadore, OH 44260 | Oil & Gas Operator | Dec 2024 |
| 20357 | Moore Richard L | Morris, OK 74445 | Oil Operator | Aug 2013 |
| 20358 | Moore Robert L | Perryton, TX 79070-1275 | Oil & Gas Operator | Apr 2020 |
| 20359 | Moore Tommy M | Sapulpa, OK 74066-8273 | Oil & Gas Operator | May 2013 |
| 20360 | Moore W T | Sapulpa, OK 74067-0946 | Oil & Gas Operator | Jan 2021 |
| 20361 | Moore Well Services Inc | Mogadore, OH 44260 | Oil & Gas Operator | Dec 2024 |
| 20362 | Moore&Munger Hydrocarbons Inc | | Oil Operator | May 1987 |
| 20363 | Moore, Brent L. | McPherson, KS 67460 | Oil Operator | Dec 1996 |
| 20364 | Moore, Clay (Deceased) | Dallas, TX 75218 | Oil Operator | Sep 2001 |
| 20365 | Moore, Douglas L. | Gridley, KS 66852 | Oil Operator | Jan 2019 |
| 20366 | Moore, Emmett C | | Oil & Gas Operator | Dec 1996 |
| 20367 | Moore, J.W. Oil Co | Llano, TX 78643 | Oil Operator | Feb 2026 |
| 20368 | Moore, John D. | Midland, TX 79708 | Oil & Gas Operator | Mar 1995 |
| 20369 | Moore, Kirby | Ozona, TX 76943 | Oil & Gas Operator | Jul 1996 |
| 20370 | Moore, Mark C. | Darien Center, NY 14040 | Gas Operator | Dec 2024 |
| 20371 | Moore, Miles Inc. | Moran, TX 76464 | Oil & Gas Operator | Feb 2026 |
| 20372 | Moore, Stephen Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2002 |
| 20373 | Mooringsport Energy Prod Corp | | Oil & Gas Operator | Oct 1994 |
| 20374 | Mooringsport Energy Prod. Co. | Shreveport, LA 71162 | Oil & Gas Operator | Feb 2026 |
| 20375 | Mooringsport Energy Trans Corp | | Oil Operator | Apr 1990 |
| 20376 | Moose Mountain Divide #1, LLC | Roosevelt, UT 84066-1656 | Oil & Gas Operator | Jan 2026 |
| 20377 | Moose Oil & Gas Co. | Houston, TX 77002 | Oil & Gas Operator | Feb 2000 |
| 20378 | Moose Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Feb 2026 |
| 20379 | Mor-Co Investments, Inc. | | Gas Operator | Feb 1994 |
| 20380 | Mor-Meg Incorpor | | Oil Operator | Dec 1996 |
| 20381 | Morain Coating & Construc | Niles, OH 44446 | Oil & Gas Operator | Dec 1997 |
| 20382 | Moran Exploration, Inc. | | Oil & Gas Operator | Jan 1985 |
| 20383 | Moran James R | Frazeysburg, OH 43822 | Oil Operator | Dec 2017 |
| 20384 | Moran Oil Co., Inc. | | Oil & Gas Operator | Aug 2009 |
| 20385 | Moran Oil Enterp | | Gas Operator | Apr 1989 |
| 20386 | Moran Oil Enterprises LLC | Seminole, OK 74818 | Oil & Gas Operator | Dec 2019 |
| 20387 | Moran Oil Partners LLC | Utica, OH 43080 | Oil Operator | Dec 2024 |
| 20388 | Moran Pipe & Supply Co Inc | Seminole, OK 74868 | Oil & Gas Operator | Jan 2019 |
| 20389 | Moran Ronald F | Frazeysburgysburg, OH 43822 | Oil & Gas Operator | Dec 2024 |
| 20390 | Moran Sherman Dean | Utica, OH 43080 | Oil & Gas Operator | Dec 2024 |
| 20391 | Moran Well Service Inc. | Gambier, OH 43022 | Oil & Gas Operator | Dec 2023 |
| 20392 | Moran, F E Oil Co | Evansville, IN 47715 | Oil Operator | Dec 2015 |
| 20393 | Moran-K Oil LLC | Seminole, OK 74868 | Oil & Gas Operator | Dec 2025 |
| 20394 | Moran-Kahn Oil | Seminole, OK 74868 | Oil & Gas Operator | Mar 1992 |
| 20395 | Moran-Lavaca, L.L.C. | Shreveport, LA 71134 | Oil Operator | Feb 2018 |
| 20396 | Moransco Energy Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 20397 | More Texas Oil | Von Ormy, TX 78073 | Oil & Gas Operator | Feb 2026 |
| 20398 | Moreland Oil & Gas Inc | Dennison, OH 44621 | Oil & Gas Operator | Dec 1990 |
| 20399 | Morexco Inc | Midland, TX 79710 | Oil & Gas Operator | Mar 2019 |
| 20400 | Morgan Creek Gas Processing Co. | Houston, TX 77027 | Gas Operator | Aug 1998 |