| 20101 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | Dec 2025 |
| 20102 | Mo-Jon, Inc. | Edroy, TX 78352 | Oil & Gas Operator | May 1999 |
| 20103 | Mo-Kan Oil Group | St. Louis, MO 63131 | Oil Operator | Sep 2001 |
| 20104 | Mo-Ky | | Oil Operator | Dec 1982 |
| 20105 | Mo-Tech Energy I | | Gas Operator | Dec 1993 |
| 20106 | Moabb Oil Corp | | Oil & Gas Operator | Apr 1998 |
| 20107 | Mob Corp | Waynesburg, PA 15370-2036 | Gas Operator | Dec 2007 |
| 20108 | Mobay Storage Hub LLC | | Gas Operator | Oct 2008 |
| 20109 | Mobeetie Resource Dev LLC | Perryton, TX 79070 | Oil & Gas Operator | Feb 2026 |
| 20110 | Mobil E&P N.A.-Pel-Tex | | Oil & Gas Operator | Dec 1993 |
| 20111 | Mobil E&P N.A.-WM Scully Et Al | | Oil & Gas Operator | Dec 1993 |
| 20112 | Mobil E&P North America Inc. | | Oil & Gas Operator | Jan 1994 |
| 20113 | Mobil Exp & Prod Us Inc | Houston, TX 77060-1991 | Oil & Gas Operator | May 2001 |
| 20114 | Mobil Expl & Producing North America Inc | | Oil & Gas Operator | Nov 1986 |
| 20115 | Mobil Explor & Prod | Cortez, CO 81321 | Oil & Gas Operator | May 2001 |
| 20116 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 20117 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 2007 |
| 20118 | Mobil Oil E & P Southeast Inc | | Oil & Gas Operator | Sep 2013 |
| 20119 | Mobil Oil E&P Se Inc - Pel-Tex | | Oil & Gas Operator | Dec 2005 |
| 20120 | Mobil Oil Expl & Prod S E | | Oil & Gas Operator | Dec 1979 |
| 20121 | Mobil Oil Exploration & Producing Southeast, Inc. | | Oil & Gas Operator | Oct 2025 |
| 20122 | Mobil Oil Exploration & Production North America Inc. | | Oil & Gas Operator | Dec 1996 |
| 20123 | Mobil Petro Vac, Inc. | Duncan, OK 73533 | Oil & Gas Operator | Feb 2026 |
| 20124 | Mobil Producing Texas & New Mexico | Denver City, TX 79323 | Oil & Gas Operator | Jun 2005 |
| 20125 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |
| 20126 | Mobile Gulf, Inc. | | Oil & Gas Operator | Aug 1985 |
| 20127 | Mobile Petrovac, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 20128 | Mobile Production Systems, Inc. | Austin, TX 78711 | Oil & Gas Operator | Feb 1995 |
| 20129 | Mobley & Davis | | Oil & Gas Operator | Oct 1986 |
| 20130 | Mobley & McCain | | Oil & Gas Operator | Nov 1979 |
| 20131 | Mobley & McCain, Et Al | | Oil & Gas Operator | Jul 1986 |
| 20132 | Mobley Oil Company, Inc. | | Oil & Gas Operator | Feb 1990 |
| 20133 | Mobley Valve Service, Inc. | | Oil & Gas Operator | Nov 2006 |
| 20134 | Mobpar, Inc. | Houston, TX 77219 | Oil & Gas Operator | Feb 2026 |
| 20135 | Mobreal Oil Inc | Wilmington, DE 19808 | Oil & Gas Operator | Dec 1989 |
| 20136 | Mockingbird Oil, Inc. (I) | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |
| 20137 | Moco Oil Inc | | Oil Operator | May 1984 |
| 20138 | Moco Operating Company | | Oil & Gas Operator | Mar 2002 |
| 20139 | Mode Oil & Gasdev LTD12/21/Ofb 9-98 | | Oil & Gas Operator | May 2013 |
| 20140 | Modena Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 20141 | Modern Exploration, Inc. | Sherman, TX 75090 | Oil & Gas Operator | Feb 2026 |
| 20142 | Modus Inc. | | Oil & Gas Operator | Dec 2025 |
| 20143 | Moenning, Vernie | Electra, TX 76360 | Oil & Gas Operator | Aug 2025 |
| 20144 | Moff Oil Company | Pratt, KS 67124 | Gas Operator | Apr 1988 |
| 20145 | Moffitt W G Trust | Fort Gibson, OK 74434-4258 | Gas Operator | Nov 2019 |
| 20146 | Mog Energy LLC | Tyler, TX 75701 | Oil Operator | Feb 2026 |
| 20147 | Mogo Operating, LLC | Norman, OK 73069 | Oil & Gas Operator | Nov 2025 |
| 20148 | Mogo Reagan, LLC | Cut Bank, MT 59427 | Oil & Gas Operator | Dec 2025 |
| 20149 | Mogul Energy Corp | Los Angeles, CA 90024 | Oil & Gas Operator | Jan 2001 |
| 20150 | Mogul Energy International, Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 2017 |
| 20151 | Mogul Operating LLC | St Petersburg, FL 33706 | Oil Operator | Feb 2026 |
| 20152 | Mogul Resources, LLC | Cisco, TX 76437 | Oil & Gas Operator | Feb 2026 |
| 20153 | Mohawk Operating LLC | Oklahoma City, OK 73173-8907 | Gas Operator | Feb 2004 |
| 20154 | Mohawk Petroleum | | Oil & Gas Operator | Jan 1995 |
| 20155 | Mohican Exploration, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2024 |
| 20156 | Mohican Oil & Gas, L.L.C. | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Apr 2013 |
| 20157 | Mohican Operating, L.L.C. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2021 |
| 20158 | Mohr Hans | Carmichaels, PA 15320-2627 | Gas Operator | Dec 2014 |
| 20159 | Mohr, Steve | Maize, KS 67101 | Oil Operator | Aug 2022 |
| 20160 | Mojac Energy Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 1997 |
| 20161 | Mojave Operating Company | Midland, TX 79702 | Oil & Gas Operator | Nov 2002 |
| 20162 | Mojave Resources, LLC | New Braunfels, TX 78132 | Oil Operator | Feb 2026 |
| 20163 | Mojo Exploration & Production, LLC | Rockdale, TX 76567 | Oil Operator | Feb 2026 |
| 20164 | Mokan Capital, LLC | Spicewood, TX 78669 | Oil Operator | Feb 2026 |
| 20165 | Molder, Tom | Imperial, TX 79743 | Oil & Gas Operator | Feb 2026 |
| 20166 | Mole Hole Prod. | Bridgeport, TX 76426 | Oil Operator | Feb 2026 |
| 20167 | Mole Operating Co., Inc. | | Oil & Gas Operator | Oct 1983 |
| 20168 | Moleco, LLC | West Hills, CA 91308 | Oil Operator | Feb 2026 |
| 20169 | Moleo Gas Corp. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2018 |
| 20170 | Molitor Oil, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Sep 2025 |
| 20171 | Mollenkopf Mark | Anadarko, OK 73005 | Oil Operator | Jul 2025 |
| 20172 | Moller, Herbert T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 20173 | Mollett Oil Productions, LLC | Thelma, KY 41260 | Oil Operator | Dec 2020 |
| 20174 | Molly Oil & Gas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Feb 2026 |
| 20175 | Molopo Energy Texas, LLC | Canada, 00100 | Oil & Gas Operator | Jan 2015 |
| 20176 | Molsdorf Ag LLC | McAllen, TX 78503 | Oil Operator | Sep 2013 |
| 20177 | Molz Oil Company Inc | Kiowa, KS 67070 | Oil & Gas Operator | Dec 2025 |
| 20178 | Momentum Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 20179 | Momentum Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 20180 | Momentum Oil & Gas, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | May 2015 |
| 20181 | Momentum Oil Company | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 20182 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 20183 | Momentum Production Corp. | Baytown, TX 77521 | Oil & Gas Operator | Feb 2026 |
| 20184 | Moms Oil & Gas LLC | Nowata, OK 74048 | Oil & Gas Operator | Mar 2023 |
| 20185 | Mon Corp. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 20186 | Mon-Oil Inc | | Oil & Gas Operator | Apr 1996 |
| 20187 | Monadnock Resources Op Co, LLC | Dallas, TX 75209 | Oil & Gas Operator | Jan 2021 |
| 20188 | Monadnock Resources, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2020 |
| 20189 | Monago Operating Inc | | Oil & Gas Operator | Apr 2007 |
| 20190 | Monahan | | Oil Operator | Dec 2009 |
| 20191 | Monahan Rex | Sterling, CO 80751 | Oil & Gas Operator | Jun 2002 |
| 20192 | Monahan* Rex Family Trust | | Oil & Gas Operator | May 2007 |
| 20193 | Monarch Energy C | | Oil Operator | Nov 1987 |
| 20194 | Monarch Energy Company LLC | Eufaula, OK 74432 | Oil & Gas Operator | Dec 2025 |
| 20195 | Monarch Energy LLC | Paola, KS 66071 | Oil Operator | Sep 2025 |
| 20196 | Monarch Operating Company | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 20197 | Monarch Petroleum Corporation | FT Worth, TX 76102 | Oil & Gas Operator | Dec 2019 |
| 20198 | Moncrief Oil | Casper, WY 82602 | Oil & Gas Operator | Feb 1986 |
| 20199 | Moncrief R W Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 1994 |
| 20200 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |