| 101 | Bull Run Resources LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2023 |
| 102 | Burgly Gas & Oil Co Inc | Apollo, PA 15613-0015 | Gas Operator | Dec 2022 |
| 103 | Burkland William S | Ligonier, PA 15658-0467 | Oil & Gas Operator | Dec 2010 |
| 104 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2024 |
| 105 | Burskey David M | Carrolltown, PA 15722-0480 | Oil & Gas Operator | Dec 2023 |
| 106 | C & D Gas Co | Apollo, PA 15613-9714 | Oil & Gas Operator | Dec 2023 |
| 107 | Cady Myrle L | Sugar Grove, PA 16350-9803 | Oil & Gas Operator | Dec 2023 |
| 108 | Calarie Lee J & Lisa A | Rural Valley, PA 16249-4113 | Oil & Gas Operator | Dec 2023 |
| 109 | Caldera Resources LLC | Smicksburg, PA 16256-0055 | Gas Operator | Dec 2023 |
| 110 | Cameron Energy Co | Sheffield, PA 16347-2642 | Oil & Gas Operator | Dec 2023 |
| 111 | Campbell Dale H | McKeesport, PA 15135-3307 | Gas Operator | Dec 2017 |
| 112 | Campbell Oil & Gas Inc | Indiana, PA 15701-0278 | Oil & Gas Operator | Jan 2024 |
| 113 | Canton Oil & Gas Co | Pleasantville, PA 16341-1729 | Oil & Gas Operator | Dec 2004 |
| 114 | Capital Oil & Gas Inc | Austintown, OH 44515-3033 | Oil & Gas Operator | Dec 2023 |
| 115 | Carlon Oil & Gas Co Inc | Derby, KS 67037 | Gas Operator | Jun 2023 |
| 116 | Carnegie Natural Gas Co | Pittsburgh, PA 15236-1435 | Gas Operator | Dec 1991 |
| 117 | Carnegie Production Co | Charleston, WV 25328 | Oil & Gas Operator | Dec 2017 |
| 118 | Carol S Pultorak & Ra A Pultorak | Waynesburg, PA 15370-2434 | Gas Operator | Dec 2018 |
| 119 | Carrizo (Marcellus) LLC | Houston, TX 77002-5018 | Gas Operator | Jun 2019 |
| 120 | Castex Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 121 | Castle Exploration Company Inc | Blue Bell, PA 19422 | Oil & Gas Operator | May 2018 |
| 122 | Castle Gas Company Inc | Pittsburgh, PA 15236-2466 | Oil & Gas Operator | Dec 2007 |
| 123 | Catalyst Energy Inc | Pittsburgh, PA 15218 | Oil & Gas Operator | Jan 2024 |
| 124 | Cedar Valley Energy Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2021 |
| 125 | Cgas Expl Inc | Columbus, OH 43214-1862 | Oil & Gas Operator | Dec 2006 |
| 126 | Charis Energy Inc | Kerrville, TX 78029-0469 | Oil & Gas Operator | Dec 2015 |
| 127 | Charis Energy LLC | Kerrville, TX 78029 | Oil & Gas Operator | Dec 2005 |
| 128 | Chautauqua Energy Inc | Westfield, NY 14787 | Oil & Gas Operator | Dec 2021 |
| 129 | Chesapeake Appalachia LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Jan 2024 |
| 130 | Chestnut Oil LLC | Clarendon, PA 16313-2001 | Oil & Gas Operator | Dec 2022 |
| 131 | Chestnut Ridge Storage LLC | San Diego, CA 92121-1008 | Gas Operator | Dec 2019 |
| 132 | Chief Oil & Gas LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2022 |
| 133 | Christine Marie Exploration LP | Indiana, PA 15701-0515 | Oil & Gas Operator | Dec 2023 |
| 134 | Citrus Energy Corporation | Castle Rock, CO 80104 | Oil & Gas Operator | Mar 2020 |
| 135 | Clean Energy Exploration & Production LLC | Norristown, PA 19403 | Gas Operator | Jan 2024 |
| 136 | Clifford & Scott McKeever | Clarksburg, PA 15725 | Gas Operator | Dec 2023 |
| 137 | Cline Oil Inc | Bradford, PA 16701 | Oil & Gas Operator | Dec 2023 |
| 138 | Clyde H & Rae M Peters | Waterford, PA 16441-8872 | Gas Operator | Dec 2007 |
| 139 | CNG Development Co | | Oil & Gas Operator | Dec 2008 |
| 140 | CNX Gas Company LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Jan 2024 |
| 141 | Coal Gas Recovery II LLC | Waynesburg, PA 15370 | Gas Operator | Dec 2017 |
| 142 | Coal Gas Recovery LLC | Waynesburg, PA 15370-2330 | Gas Operator | Dec 2012 |
| 143 | Coal Gas Recovery LP | Linthicum Heights, MD 21090-2227 | Gas Operator | Dec 2010 |
| 144 | Coastal Petro Corp | Oil City, PA 16301-6327 | Oil & Gas Operator | Jul 2018 |
| 145 | Cobra Resources LLC | N Jackson, OH 44451 | Oil & Gas Operator | Dec 2023 |
| 146 | Columbia Gas Trans LLC | Charleston, WV 25325-1273 | Gas Operator | Dec 1987 |
| 147 | Columbia Natural Res Inc | Charleston, WV 25362-0070 | Gas Operator | Dec 2008 |
| 148 | Columbia Natural Resources, LLC | Charleston, WV 23502 | Oil & Gas Operator | Dec 2021 |
| 149 | Columbus Oilfield Explor Co | Powell, OH 43065-9315 | Gas Operator | Dec 2004 |
| 150 | Commodore Energy Co | Rolling Hills, CA 90274-5265 | Oil & Gas Operator | Dec 2007 |
| 151 | Connie J & Ronald L Yeany | Fairmount City, PA 16224-1903 | Gas Operator | Dec 2023 |
| 152 | Consol Gas Company | Canonsburg, PA 15317 | Oil & Gas Operator | Dec 2021 |
| 153 | Consolidation Coal Company | Saint Clairsville, OH 43950-8742 | Oil & Gas Operator | Dec 2020 |
| 154 | Consortium Energy LLC | North Canton, OH 44720 | Oil & Gas Operator | Dec 2023 |
| 155 | Cook Energy Inc | Cooksburg, PA 16217-0054 | Oil & Gas Operator | Dec 2004 |
| 156 | Coolspring Gas & Oil Co LLC | Coolspring, PA 15730-8524 | Gas Operator | Dec 2023 |
| 157 | Copeland Gas LLC | Albion, PA 16401 | Gas Operator | Dec 2023 |
| 158 | Copper Ridge Oil Inc | Olean, NY 14760 | Oil & Gas Operator | Dec 2022 |
| 159 | Copperhead Enterprises LLC | Ludlow, PA 16333-0057 | Oil & Gas Operator | Dec 2023 |
| 160 | Coterra Energy Inc | Pittsburgh, PA 15275-1121 | Oil & Gas Operator | Jan 2024 |
| 161 | Cotton Well Drilling Co Inc | Sheridan, NY 14135 | Oil & Gas Operator | Dec 2022 |
| 162 | Cottonwood Opr Corp | Dubois, PA 15801-0403 | Gas Operator | Dec 1989 |
| 163 | Cottonwood Prod Co Inc | Buffalo, NY 14202-2212 | Gas Operator | Dec 2002 |
| 164 | Cougar Energy Inc | Oil City, PA 16301-4046 | Oil & Gas Operator | Dec 2013 |
| 165 | CRS Energy LLC | Stoneboro, PA 16153 | Oil & Gas Operator | Dec 2023 |
| 166 | Curtis & Son Oil Inc | Sugar Grove, PA 16350 | Oil & Gas Operator | Dec 2023 |
| 167 | Curtis Oil Inc | Duke Center, PA 16729-0287 | Oil & Gas Operator | Dec 2023 |
| 168 | D & B Gas Prod LLC | Kittanning, PA 16201-7123 | Oil & Gas Operator | Dec 2023 |
| 169 | D & L Energy Inc | Canton, OH 44718 | Oil & Gas Operator | Dec 2016 |
| 170 | D & S Energy Corp | Tiona, PA 16352-0102 | Oil & Gas Operator | Dec 2018 |
| 171 | D N Stover Inc | Knox, PA 16232-0810 | Oil & Gas Operator | Dec 2015 |
| 172 | Dakota Oil & Gas Co | Delmont, PA 15626-2408 | Oil & Gas Operator | Dec 2023 |
| 173 | Dakota Opr Co Inc | Indiana, PA 15701-0444 | Oil & Gas Operator | Dec 1999 |
| 174 | Dale R & George W Magee | Duke Center, PA 16729-0217 | Oil & Gas Operator | Dec 2010 |
| 175 | Dallas Energy LLC | Bradford, PA 16701 | Oil & Gas Operator | Dec 2023 |
| 176 | Daniel P Hornburg | Clarendon, PA 16313-2324 | Oil & Gas Operator | Dec 2023 |
| 177 | Dannic Energy Corp | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2023 |
| 178 | Dave Shrader Oil FLD SVC Inc | Endeavor, PA 16322-0189 | Oil & Gas Operator | Dec 2023 |
| 179 | David L Hill | Bradford, PA 16701-0309 | Oil & Gas Operator | Dec 2023 |
| 180 | David Lesher Dba Lesher Oil | Reno, PA 16343-0293 | Oil Operator | Dec 2006 |
| 181 | Davidson Roger D | Clarendon, PA 16313-4532 | Oil & Gas Operator | Dec 2023 |
| 182 | Dawn Energy SVC | Templeton, PA 16259-3616 | Gas Operator | Dec 2023 |
| 183 | De LTD Family Partnership | Punxsutawney, PA 15767-2646 | Oil & Gas Operator | Dec 2022 |
| 184 | Deitz Edith | Clarion, PA 16214-9416 | Oil & Gas Operator | Dec 2009 |
| 185 | Deitz Gas & Oil Inc | Clarion, PA 16214-3215 | Oil & Gas Operator | Dec 2023 |
| 186 | Delta Petro Corp Of Colorado | Houston, TX 77010-3089 | Gas Operator | Dec 2003 |
| 187 | Developed Resources Inc | Cheswick, PA 15024 | Oil & Gas Operator | Dec 2022 |
| 188 | Devonian Resources Inc | Pikeville, KY 41502 | Oil & Gas Operator | Dec 2022 |
| 189 | DH Production | Albany, TX 76430 | Oil Operator | Dec 2005 |
| 190 | Diamond Energy Partners LLC | Vienna, OH 44473 | Oil & Gas Operator | Dec 2023 |
| 191 | Diversified Oil & Gas LLC | Jackson Center, PA 16133 | Oil & Gas Operator | Dec 2022 |
| 192 | Diversified Production LLC | Minden, LA 71055 | Oil & Gas Operator | Apr 2024 |
| 193 | DJR Well Services Inc | McDonald, OH 44437 | Oil & Gas Operator | Dec 2023 |
| 194 | DK Gas Inc | Hawthorn, PA 16230-0228 | Oil & Gas Operator | Dec 2006 |
| 195 | DL Resources Inc | Ludlow, PA 16333-0039 | Oil & Gas Operator | Jan 2024 |
| 196 | Dorso Energy | Wexford, PA 15090 | Oil & Gas Operator | Dec 2004 |
| 197 | Dorso LLC | Wexford, PA 15090-8758 | Oil & Gas Operator | Dec 2005 |
| 198 | Dorso LP | Wexford, PA 15090-8314 | Oil & Gas Operator | Dec 2022 |
| 199 | Dorward Energy Corporation | Saint Petersburg, FL 33701-3255 | Oil & Gas Operator | Dec 2021 |
| 200 | Double Aa S LLC | Mayport, PA 16240-5638 | Oil & Gas Operator | Dec 2019 |