| 101 | Dominion East Ohio | North Canton, OH 44720 | Oil & Gas Operator | Dec 2023 |
| 102 | Doran & Associates | Pittsburgh, PA 15220 | Oil & Gas Operator | Dec 1988 |
| 103 | Dover Atwood Corporation | Massillon, OH 44646 | Oil & Gas Operator | Dec 2024 |
| 104 | Dover Oil Co | Marietta, OH 45750 | Oil & Gas Operator | Dec 1999 |
| 105 | Dye Walter M | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2022 |
| 106 | Eagle Mountain Energy | Columbus, OH 43214 | Oil & Gas Operator | Dec 2002 |
| 107 | Eastern Amer Energy Corp | Charleston, WV 25304 | Oil & Gas Operator | Dec 2006 |
| 108 | Eastern Petroleum Company | Girard, OH 44420 | Oil & Gas Operator | Sep 1995 |
| 109 | Eclipse Resources-Ohio LLC | Morgantown, WV 26508 | Oil & Gas Operator | Dec 2020 |
| 110 | Edco Drilling & Producing | MT Gilead, OH 43338 | Oil & Gas Operator | Dec 2006 |
| 111 | Elba Oil Company LLC | Macksburg, OH 45746 | Oil Operator | Dec 2024 |
| 112 | Elk Oil Co LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2018 |
| 113 | Em Energy Ohio LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Sep 2019 |
| 114 | Energy Contractors, Inc. | Canal Wincheste, OH 43110 | Oil & Gas Operator | Dec 2019 |
| 115 | Energy Distributors Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1987 |
| 116 | Energy Search Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2007 |
| 117 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2025 |
| 118 | Enterprise Energy Corp | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1985 |
| 119 | Envirogas Inc | Hamburg, NY 14075 | Oil & Gas Operator | Dec 1992 |
| 120 | Equity Oil & Gas Funds Inc | Orlando, FL 32837-6103 | Oil & Gas Operator | Dec 2024 |
| 121 | Exco - North Coast Energy Inc | Kittanning, PA 16201 | Oil & Gas Operator | Dec 2018 |
| 122 | Explore Energy Corp. | Westerville, OH 43086 | Oil & Gas Operator | Dec 2016 |
| 123 | Fleeman Teresa R | Lower Salem, OH 45745 | Oil & Gas Operator | Dec 2024 |
| 124 | Fouss Energy LLC | Whipple, OH 45788 | Oil & Gas Operator | Dec 2024 |
| 125 | Frederick Petroleum Corp | Lowell, OH 45744 | Oil & Gas Operator | Dec 1990 |
| 126 | G W F Corporation | Columbus, OH 43215 | Oil & Gas Operator | Dec 2003 |
| 127 | G-R Contracting Inc | Lewisville, OH 43754 | Oil & Gas Operator | Dec 2024 |
| 128 | Gas Enterprise Company Inc | Wingett Run, OH 45789 | Oil & Gas Operator | Dec 2024 |
| 129 | Geitgey Donald W Jr | N Canton, OH 44721 | Oil & Gas Operator | Dec 2024 |
| 130 | Genesis Resources LLC | Parkersburg, WV 26104 | Oil & Gas Operator | Dec 2019 |
| 131 | Gonzoil Inc | Canton, OH 44718-1806 | Oil & Gas Operator | Dec 2018 |
| 132 | Gormley Joseph A | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2018 |
| 133 | Greenland Petroleum Co | Belle Valley, OH 43717 | Oil & Gas Operator | Dec 1991 |
| 134 | Greenwood James W | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2014 |
| 135 | Greenwood Oil LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 136 | Guernsey Petroleum Corporation | Atlanta, GA 30318 | Oil & Gas Operator | Nov 1997 |
| 137 | GWB Oil & Gas LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 138 | H & S Drilling Co Inc | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 2016 |
| 139 | H. C. Oil Co. | Weatherford, TX 76085 | Oil & Gas Operator | Aug 2025 |
| 140 | Haddad & Brooks Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2018 |
| 141 | Haessly Hardwood Lumber Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 142 | Hall Thomas E | Marietta, OH 45750 | Oil & Gas Operator | Dec 2021 |
| 143 | Hamilton Leonard O | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 144 | Harrison Energy | Tippecanoe, OH 44699 | Oil & Gas Operator | Dec 2000 |
| 145 | Headington Oil Company, L.P. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2008 |
| 146 | Hearn Oil Co. LLC | Newport, OH 45768 | Oil & Gas Operator | Dec 2023 |
| 147 | Heinrich Enterprises Inc Dba Washington Operations | Reno, OH 45773 | Oil & Gas Operator | Dec 2024 |
| 148 | High Plains Gas Systems, Inc. | Houston, TX 77019 | Oil & Gas Operator | Aug 2025 |
| 149 | Hopewell Oil & Gas Development Company | Columbus, OH 43228 | Oil & Gas Operator | Dec 2019 |
| 150 | Houghton Investments LLC | Columbus, OH 43235 | Oil & Gas Operator | Dec 2024 |
| 151 | Huffman-Bowers Inc | New Lexington, OH 43764 | Oil & Gas Operator | Dec 2024 |
| 152 | Indian Hills Resources LLC | Williamsburg, MI 49690 | Oil & Gas Operator | Dec 2024 |
| 153 | Inr Ohio LLC | Morgantown, WV 26508-9209 | Oil & Gas Operator | Mar 2025 |
| 154 | J & C Oil | New Matamoras, OH 45767-6035 | Oil & Gas Operator | Dec 2024 |
| 155 | J & S Oil Co | Graham, TX 76450 | Oil & Gas Operator | Apr 2022 |
| 156 | J & T Productions LLC | Tallmansville, WV 26237 | Oil & Gas Operator | Dec 2022 |
| 157 | J M Adams Roustabout & Pipeline Construction Inc. | New Concord, OH 43762 | Oil & Gas Operator | Dec 2024 |
| 158 | J Well Service Inc | Warren, OH 44482 | Oil & Gas Operator | Dec 2024 |
| 159 | J. D. Gas & Oil, Inc. | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |
| 160 | J. D. Oil & Gas, Inc. | North Canton, OH 44720 | Oil & Gas Operator | Dec 2011 |
| 161 | James R Smail Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2020 |
| 162 | Jr Oil | Chanute, KS 66720 | Oil & Gas Operator | Oct 2019 |
| 163 | JRM Oil Co | Dalton, OH 44618 | Oil & Gas Operator | Dec 1993 |
| 164 | Kehl Oil & Gas Enterprises LLC | Lower Salem, OH 45745 | Oil & Gas Operator | Dec 2024 |
| 165 | Kenoil LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 166 | Kilbarger Investments Inc | Logan, OH 43138 | Oil & Gas Operator | Dec 2023 |
| 167 | Killbuck Creek Oil Co LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 168 | KLJ Inc | Graysville, OH 45734 | Oil & Gas Operator | Dec 2002 |
| 169 | Knox Energy Inc | New Albany, OH 43054 | Oil & Gas Operator | Dec 2024 |
| 170 | Kroll Energy LLC | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2024 |
| 171 | L & M Petroleum Co | Reno, OH 45773 | Oil & Gas Operator | Dec 1987 |
| 172 | L & S Oil And Gas | Newark, OH 43055-8732 | Oil & Gas Operator | Dec 2014 |
| 173 | Lang Larry D | Beverly, OH 45715 | Oil & Gas Operator | Dec 2024 |
| 174 | Lawrence Smith Oil LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2023 |
| 175 | Leader Equities Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 176 | Levengood Oil & Gas(Us)In | Dover, OH 44621-2900 | Oil & Gas Operator | Dec 1997 |
| 177 | Liberty Oil And Gas Corp. | Olney, IL 62450-2489 | Oil & Gas Operator | Dec 2021 |
| 178 | Lippizan Petroleum, Inc. | Ellenboro, WV 26346 | Oil & Gas Operator | Dec 2024 |
| 179 | Lothes John W | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 180 | Lucas Well Service, Inc. | Parkersburg, WV 26101 | Oil & Gas Operator | Dec 2021 |
| 181 | Ludlow Oil & Gas Company LLC | New Matamoras, OH 45767-5058 | Oil & Gas Operator | Dec 2024 |
| 182 | Lutes Daun | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2024 |
| 183 | Lydic, W. J., Inc. | Zanesville, OH 43702-2310 | Oil & Gas Operator | Jan 2005 |
| 184 | M & R Investments Ohio LLC | Birmingham, AL 35238 | Oil & Gas Operator | Dec 2019 |
| 185 | Mackenco Inc | Columbus, OH 43235 | Oil & Gas Operator | Dec 2020 |
| 186 | Madden Ventures | Mundelein, IL 60060 | Oil & Gas Operator | Dec 2008 |
| 187 | Majestic Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2007 |
| 188 | Mallett Luke-Dba Mallett Energy | New Concord, OH 43762 | Oil & Gas Operator | Dec 2016 |
| 189 | Malvern Group Inc | Clearwater, FL 33758-6817 | Oil & Gas Operator | Mar 2005 |
| 190 | Marietta Royalty Co Inc | Stillwater, OK 74076 | Oil & Gas Operator | Dec 1986 |
| 191 | Marion Operating Corp | Marion, OH 43301 | Oil & Gas Operator | Dec 2020 |
| 192 | Marline Oil Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 1989 |
| 193 | Martin Larrey C | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 194 | Mid Atlantic Oil Co | Hillsdale, MI 49242 | Oil & Gas Operator | Dec 1999 |
| 195 | Mid-Con Petroleum Co Inc | Heath, OH 43056 | Oil & Gas Operator | Dec 2010 |
| 196 | Morgan Pennington Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 1990 |
| 197 | Murphy Oil Company Inc | Lancaster, OH 43130 | Oil & Gas Operator | Dec 2024 |
| 198 | Mutual Oil & Gas Co | Akron, OH 44311 | Oil & Gas Operator | Dec 2001 |
| 199 | N & K Oil & Gas Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 1998 |
| 200 | Noble Petroleum LLC | Lower Salem, OH 45745-9648 | Oil & Gas Operator | Dec 2024 |