| 1 | I & F Oil And Farm | | Oil & Gas Operator | Dec 2009 |
| 2 | I & L Development Co. | Dallas, TX 75219 | Oil & Gas Operator | Mar 1996 |
| 3 | I & M Oil Production, LLC | Overland Park, KS 66209 | Oil & Gas Operator | Jun 2025 |
| 4 | I C Gas Amcana Inc | Tulsa, OK 74103-3713 | Oil & Gas Operator | Apr 1996 |
| 5 | I D Oil Company Inc | Sperry, OK 74073-9417 | Oil Operator | Jan 2013 |
| 6 | I T Enterprises Inc | Tulsa, OK 74170-0775 | Oil & Gas Operator | Mar 2011 |
| 7 | I-Mac Petroleum Service Inc | Bixby, OK 74008-3778 | Oil & Gas Operator | Apr 2020 |
| 8 | I. H. Delatte | | Oil & Gas Operator | Jul 1991 |
| 9 | I. J. Wilhite | | Oil Operator | Apr 2000 |
| 10 | I. J. Wilhite & Star Drilling, Inc. | | Oil Operator | Sep 1973 |
| 11 | I. W. McKnight,Production | | Oil Operator | Jan 1986 |
| 12 | I.G. Petroleum, L.L.C | | Oil & Gas Operator | Dec 2018 |
| 13 | I.T. Corporation | Arlington, TX 76016 | Oil & Gas Operator | Dec 2025 |
| 14 | I.T. Properties | Arlington, TX 76006 | Oil & Gas Operator | Dec 2025 |
| 15 | Ia Operating, Inc. | Edmond, OK 73003 | Oil Operator | Jun 2025 |
| 16 | Iacobucci, Gary | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 17 | Iacx Energy LLC | Dallas, TX 75244 | Gas Operator | Oct 2025 |
| 18 | Iacx Production LLC | Roswell, NM 88201 | Oil & Gas Operator | Sep 2025 |
| 19 | Iantha Resources LLC | Garnett, KS 66032 | Oil Operator | Dec 2019 |
| 20 | Iantorno Brothers Oil | Bolivar, NY 14715 | Oil & Gas Operator | Dec 2024 |
| 21 | Ibc Petroleum, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Dec 2025 |
| 22 | Iberia Operating Corporation | | Oil & Gas Operator | Jan 2003 |
| 23 | Ibex Resources I, L.P. | Midland, TX 79701 | Oil & Gas Operator | Jul 1999 |
| 24 | Ibex Resources Operating LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 25 | Ibex Resources, LLC | Austin, TX 78751 | Oil & Gas Operator | Jul 1999 |
| 26 | Ica Energy Operating, L.L.C. | Odessa, TX 79760 | Oil & Gas Operator | Dec 2025 |
| 27 | Icarus Operating Corporation | Spring, TX 77393 | Oil & Gas Operator | Dec 2025 |
| 28 | Ice Brothers, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Jul 2024 |
| 29 | Ice Well Services, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Dec 2025 |
| 30 | Icg Tygart Valley, LLC | Grafton, WV 26354 | Oil & Gas Operator | Dec 2021 |
| 31 | Ickert Enterprises | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 32 | Ickert, A. F. Jr. | Olney, TX 76374 | Oil & Gas Operator | Apr 1998 |
| 33 | Icon Energy Company | Oklahoma City, OK 73156-1613 | Oil & Gas Operator | Aug 2025 |
| 34 | Iconic Oil & Gas LLC | Dallas, TX 75229 | Gas Operator | Jun 2025 |
| 35 | Icor Oil & Gas Of Okla LTD | Claremore, OK 74018-2132 | Oil & Gas Operator | Mar 2015 |
| 36 | Ics Energy LLC | Stamford, TX 79553 | Oil & Gas Operator | Dec 2025 |
| 37 | Idaho Oil Co., Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Mar 2008 |
| 38 | Idc Energy Corp | Warren, PA 16365-0792 | Oil & Gas Operator | Dec 2021 |
| 39 | Idgas, Inc. | Austin, TX 78746 | Oil & Gas Operator | Oct 1995 |
| 40 | Iep Kansas Gas, LLC | Burlington, CO 80807 | Oil & Gas Operator | Sep 2025 |
| 41 | Igas Corp | Charlottesville, VA 22905-5246 | Gas Operator | Dec 2000 |
| 42 | Igleheart Warren | Edmond, OK 73034-8964 | Oil & Gas Operator | Jun 2016 |
| 43 | Igp Peninsula Properties LLC | Canfield, OH 44406 | Oil & Gas Operator | Dec 2024 |
| 44 | Igwt, Inc. | Rose Hill, KS 67133 | Oil & Gas Operator | Jun 2025 |
| 45 | Ijs Oil | Saint Jo, TX 76265 | Oil & Gas Operator | Dec 2025 |
| 46 | Ikard, Alan | Electra, TX 76360 | Oil & Gas Operator | Dec 2025 |
| 47 | Ike Energy LLC | Stillwater, OK 74074-1745 | Oil & Gas Operator | Aug 2025 |
| 48 | Ike Lovelady, Inc. | | Oil & Gas Operator | Jun 1985 |
| 49 | Ike Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Dec 2025 |
| 50 | Ikenberry Herman & Ikenberry | | Oil Operator | Jul 1999 |
| 51 | Iks Operating | Upton, WY 82703 | Oil & Gas Operator | Jul 2013 |
| 52 | Il Geer & Sons Partnership | Clarendon, PA 16313-4107 | Oil & Gas Operator | Dec 2013 |
| 53 | Illini Development Company | | Oil & Gas Operator | Dec 2002 |
| 54 | Illoma Oil Company Inc | Algonquin, IL 60102-1825 | Oil & Gas Operator | Mar 2015 |
| 55 | Imagery Exploration, Inc. | Dallas, TX 75380 | Oil & Gas Operator | Dec 2025 |
| 56 | Imc Exploration Co. | | Oil & Gas Operator | Oct 1986 |
| 57 | Immink Merle | | Oil & Gas Operator | Sep 2025 |
| 58 | Imod Oil Prod LLC | Pleasantville, PA 16341-0149 | Oil & Gas Operator | Dec 2009 |
| 59 | Impact Energy Operating LLC | Oklahoma City, OK 73172 | Oil & Gas Operator | Oct 2025 |
| 60 | Impact Exploration & Production LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Oct 2025 |
| 61 | Impact Exploration Company | Oklahoma City, OK 73118 | Oil & Gas Operator | May 1998 |
| 62 | Imperator Investments LLC | Shawnee, KS 66217 | Oil Operator | Aug 2024 |
| 63 | Imperial American Oil Corporation | Wichita, KS 67205 | Oil Operator | Dec 2009 |
| 64 | Imperial Gas Resources LLC | Austin, TX 78701 | Oil & Gas Operator | Dec 2025 |
| 65 | Imperial Occidental | | Oil & Gas Operator | Sep 2025 |
| 66 | Imperial Oil & G | | Gas Operator | Jan 1990 |
| 67 | Imperial Oil Com | | Oil & Gas Operator | Dec 1992 |
| 68 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 69 | Imperial Oil Of North Dakota, Inc. | | Oil & Gas Operator | Jul 2023 |
| 70 | Imperial Oil Properties, Inc. | Wichita, KS 67201 | Oil & Gas Operator | Jun 2006 |
| 71 | Imperial Operating Co., L.L.C. | Midland, TX 79701 | Oil Operator | Sep 2023 |
| 72 | Imperial Petroleum Inc | Evansville, IN 47725 | Oil & Gas Operator | Jan 2005 |
| 73 | Imperial-American Energy,Inc. | | Oil & Gas Operator | Jul 1978 |
| 74 | Imperium Energy Inc | Atlanta, TX 75551 | Oil & Gas Operator | Aug 2025 |
| 75 | Impetro Nonop LLC | | Oil Operator | Jun 2025 |
| 76 | Impetro Oil & Gas, LLC | San Antonio, TX 78258 | Oil & Gas Operator | Jun 2018 |
| 77 | Impetro Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2020 |
| 78 | Impetro Resources LLC | | Oil & Gas Operator | Sep 2025 |
| 79 | Ina Street Operations, Inc. | Skellytown, TX 79080 | Oil & Gas Operator | Nov 2012 |
| 80 | Inabnet Est., H. Inabnet, Agt. | | Gas Operator | Jul 2005 |
| 81 | Inactive Operator | | Oil Operator | Dec 1982 |
| 82 | Inca Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2009 |
| 83 | Incendium Resources LLC | Argyle, TX 76226 | Oil & Gas Operator | Dec 2025 |
| 84 | Incline Energy | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 85 | Incline Operating LLC | | Oil & Gas Operator | Sep 2025 |
| 86 | Incline Production Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 2014 |
| 87 | Incline Reserves | | Oil Operator | Apr 1988 |
| 88 | Incline Reserves Inc | Topeka, KS BAD ADDR | Oil & Gas Operator | Mar 1994 |
| 89 | Incremental Oil & Gas (Florence) LLC | | Oil & Gas Operator | Oct 2025 |
| 90 | Incremental Oil & Gas USA Holdings Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2021 |
| 91 | Inda Oil Unlimited | Bartlesville, OK 74006 | Oil Operator | Dec 2023 |
| 92 | Independence Energy LLC | | Oil Operator | Jun 2025 |
| 93 | Independence Resources MGMT, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Mar 2021 |
| 94 | Independent Expl Company | | Oil & Gas Operator | Dec 2000 |
| 95 | Independent Oil Investors | Lakeside, MI 49116 | Oil & Gas Operator | Dec 1992 |
| 96 | Independent Production Company | Greenwood VIllage, CO 80121 | Oil & Gas Operator | May 2003 |
| 97 | Indexgeo & Associates, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 2009 |
| 98 | Indian Creek Resources Inc | Loveland, CO 80538 | Oil & Gas Operator | Dec 2024 |
| 99 | Indian Exploration, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Dec 2025 |
| 100 | Indian Hill Gas Co Inc | Fayette City, PA 15438-1203 | Oil & Gas Operator | Dec 2024 |