| 1101 | Dol Resources Inc | Rowlett, TX 75088 | Oil & Gas Operator | Jan 2026 |
| 1102 | Dolberry Energy Resources Corp. | Dallas, TX 75252 | Oil Operator | Feb 2026 |
| 1103 | Dolch Production, Inc. | San Antonio, TX 78248 | Oil & Gas Operator | Jul 1996 |
| 1104 | Dole Enterprises Inc. | | Oil & Gas Operator | Dec 2025 |
| 1105 | Dolezal George Jr | Littleton, CO 80163 | Oil & Gas Operator | Sep 2006 |
| 1106 | Dolinar, Michael J. | Angola, NY 14006 | Gas Operator | Dec 2024 |
| 1107 | Dolphin Energy LLC | Lake Worth, FL 33467 | Oil & Gas Operator | Sep 2025 |
| 1108 | Dolphin Petroleum | Alice, TX 78333 | Oil & Gas Operator | Jun 2008 |
| 1109 | Dolphin Petroleum, LP | Alice, TX 78333 | Oil & Gas Operator | Feb 2026 |
| 1110 | Domac Oil Company Inc | Perkins, OK 74059-0642 | Oil & Gas Operator | Feb 2006 |
| 1111 | Domar Oil & Gas | | Gas Operator | May 1995 |
| 1112 | Domar Oil & Gas Inc | Liberal, KS 67905 | Oil & Gas Operator | Oct 2000 |
| 1113 | Dome De Sel LLC | | Oil & Gas Operator | Nov 2024 |
| 1114 | Dome Drilling Co | Westlake, OH 44145-1964 | Oil & Gas Operator | Dec 2009 |
| 1115 | Dome Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 1116 | Dome Producing | Cleveland, OH 44114 | Oil & Gas Operator | Dec 1988 |
| 1117 | Domestic Crude | Graham, TX 76450 | Oil & Gas Operator | Jul 2000 |
| 1118 | Domestic Energy Corporation | | Oil Operator | Jan 1988 |
| 1119 | Domestic Oil & Gas Co | Bedford, OH 44146 | Oil & Gas Operator | Dec 1990 |
| 1120 | Domestic Oil Producers | | Oil Operator | Oct 1980 |
| 1121 | Domestic Oil Producers,Inc. | | Oil Operator | Oct 1998 |
| 1122 | Domestic Oil Production | | Oil & Gas Operator | Oct 1989 |
| 1123 | Dominex, Inc. | | Gas Operator | Jan 1986 |
| 1124 | Dominguez Energy L.P. | | Oil & Gas Operator | Dec 2000 |
| 1125 | Dominguez Properties | | Oil & Gas Operator | Dec 1991 |
| 1126 | Dominion Corporation | Houston, TX 77001 | Oil & Gas Operator | Dec 2010 |
| 1127 | Dominion East Ohio | North Canton, OH 44720 | Oil & Gas Operator | Dec 2023 |
| 1128 | Dominion Energy Transmission, Inc. | | Oil & Gas Operator | Dec 2019 |
| 1129 | Dominion Exp Midcontinent Inc | Oklahoma City, OK 73134-2616 | Oil & Gas Operator | Oct 2024 |
| 1130 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 1131 | Dominion Field Services Inc | Richmond, VA 23219 | Oil & Gas Operator | Dec 2013 |
| 1132 | Dominion Midstream Services, LP | | Oil Operator | Dec 2006 |
| 1133 | Dominion Midwest Energy Inc | | Oil & Gas Operator | Dec 2007 |
| 1134 | Dominion Minerals Corporation | Houston, TX 77014 | Oil & Gas Operator | Nov 2009 |
| 1135 | Dominion Natural Resources LLC | Dallas, TX 75367 | Oil & Gas Operator | Feb 2026 |
| 1136 | Dominion Oil & Gas Corporation | Irving, TX 75039 | Oil & Gas Operator | Jun 2012 |
| 1137 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 1138 | Dominion Oklahoma Texas E&P, Inc | Richmond, VA 23219 | Oil & Gas Operator | Sep 2018 |
| 1139 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 1140 | Dominion Oklahoma Texas Exploration & Production | Houston, TX 77060 | Oil & Gas Operator | Dec 2006 |
| 1141 | Dominion Operating, LLC | Midland, TX 79708 | Oil Operator | Mar 2018 |
| 1142 | Dominion Production Company, LLC | Tampa, FL 33606 | Oil & Gas Operator | Feb 2026 |
| 1143 | Dominion Resources, Inc | Staffordsville, KY 41256 | Oil & Gas Operator | Dec 2014 |
| 1144 | Dominiq Operating, Inc | Scurry, TX 75158 | Oil Operator | Dec 2023 |
| 1145 | Domino Operations, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Feb 2026 |
| 1146 | Domino Prod Services Inc | Bellville, TX 77418 | Oil & Gas Operator | Feb 2004 |
| 1147 | Dominus Energy, Inc | Austin, TX 78737 | Oil & Gas Operator | Dec 2020 |
| 1148 | Dominy Oil Co., Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Oct 1999 |
| 1149 | Don Bar Investment Company | Windthorst, TX 76389 | Oil & Gas Operator | Feb 2004 |
| 1150 | Don Byers Oil & Gas LLC | Heath, OH 43056 | Oil & Gas Operator | Dec 2024 |
| 1151 | Don E. Beckert | | Oil & Gas Operator | Nov 2007 |
| 1152 | Don Erbert Oil Company | | Oil Operator | Oct 2013 |
| 1153 | Don G. Wiley, Jr. | | Oil Operator | Dec 1979 |
| 1154 | Don Karst Well Service, Inc. | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 1155 | Don Peterson Company, LLC - | Loving, TX 76460 | Oil Operator | Feb 2026 |
| 1156 | Don R Ormand | Midland, TX 79702 | Oil & Gas Operator | Jun 2014 |
| 1157 | Don Sims Oil | | Oil Operator | Sep 2025 |
| 1158 | Don Townes | | Oil Operator | Sep 2000 |
| 1159 | Don W. Holcomb | | Oil Operator | Feb 1996 |
| 1160 | Don Webb | | Oil Operator | Mar 1984 |
| 1161 | Don Yohe Enterprises And Devonian Energy Inc | | Gas Operator | Dec 1999 |
| 1162 | Don Yohe Enterprises Inc. | Armada, MI 48005 | Oil & Gas Operator | Apr 2018 |
| 1163 | Don'S Oil Company Inc | Oxford, KS 67119-0006 | Oil Operator | Apr 2011 |
| 1164 | Don-Dale, Inc. | Clarksville, TX 75426 | Oil & Gas Operator | Aug 2003 |
| 1165 | Donahue Pipeline Construction, Inc. | Branchland, WV 25506 | Gas Operator | Dec 2021 |
| 1166 | Donaker Alan M | Warsaw, OH 43844 | Oil & Gas Operator | Dec 1994 |
| 1167 | Donald & Danny Dews Production | | Oil Operator | Jan 2025 |
| 1168 | Donald C Slawson Expl Co. Inc | | Oil & Gas Operator | Dec 2020 |
| 1169 | Donald C. Ring Revocable Trust | Sebring, FL 33875 | Gas Operator | Dec 2024 |
| 1170 | Donald C. Slawson | | Oil Operator | Jun 1985 |
| 1171 | Donald E & Janet L Rearick | Ford City, PA 16226-9801 | Gas Operator | Dec 2025 |
| 1172 | Donald J. Zadeck | | Oil & Gas Operator | Feb 1998 |
| 1173 | Donald Len Barreth | | Oil & Gas Operator | Dec 1991 |
| 1174 | Donald Owens | | Oil & Gas Operator | Dec 2024 |
| 1175 | Donaldson Richard E | Bartlesville, OK 74005-0032 | Oil & Gas Operator | Nov 2005 |
| 1176 | Donalu Oil | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 1177 | Doneghy James | Wellington, TX 79095 | Oil & Gas Operator | May 2013 |
| 1178 | Donke Oil & Gas, LLC | Tulsa, OK 74137 | Oil & Gas Operator | Mar 2018 |
| 1179 | Donn G. Thompson, Et Al | | Oil Operator | Apr 1987 |
| 1180 | Donna Lee Oil Co | Independence, KS 67301 | Oil & Gas Operator | Apr 2014 |
| 1181 | Donna-Lynne Oil Co. | George West, TX 78022 | Oil & Gas Operator | Jun 2018 |
| 1182 | Donnell Pipe & Supply Co/TX Corp | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2008 |
| 1183 | Donnell, Bill | Graham, TX 76450 | Oil & Gas Operator | May 1995 |
| 1184 | Donnell, Louis, Jr. | South Bend, TX 76481 | Oil & Gas Operator | Mar 2008 |
| 1185 | Donnelly Casing Pulling Co | | Oil Operator | Aug 2020 |
| 1186 | Donnie R. Morrow | | Oil Operator | Dec 2024 |
| 1187 | Donny Joe Barnhill | | Gas Operator | Dec 2024 |
| 1188 | Donoco Inc | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1984 |
| 1189 | Donoco Oil Company | La Vernia, TX 78121 | Oil & Gas Operator | Feb 2026 |
| 1190 | Donovan Joe D Or L P McElwaine | Tulsa, OK 74119 | Gas Operator | Jan 2014 |
| 1191 | Donray Petroleum LLC | Choctaw, OK 73020 | Oil & Gas Operator | Nov 2025 |
| 1192 | Donson Corporation | Edmond, OK 73083-0341 | Oil & Gas Operator | Jul 1997 |
| 1193 | Doodle-Bug, Incorporated | Paducah, TX 79248 | Oil & Gas Operator | Jan 1996 |
| 1194 | Doodlebug Oil Co | | Oil Operator | Jun 2006 |
| 1195 | Doolaree Corporation | Sherman, TX 75091 | Oil & Gas Operator | Feb 2026 |
| 1196 | Dooley, Jeff | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2012 |
| 1197 | Doonan & Sons In | | Oil Operator | Apr 1995 |
| 1198 | Doonan And Sons, Inc. | Great Bend, KS 67530 | Oil Operator | Apr 2021 |
| 1199 | Dora Inc | Levelland, TX 79336 | Oil & Gas Operator | Jul 2019 |
| 1200 | Dorado Drilling, Inc. | Gulfport, MS 39501 | Oil & Gas Operator | Feb 2026 |