| 14301 | Intercity Management Corp. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Apr 2025 |
| 14302 | Intercoast Oil And Gas | Tulsa, OK 74136 | Oil & Gas Operator | Mar 1997 |
| 14303 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 14304 | Intercoastal Energy, Inc. | Houston, TX 77055 | Oil & Gas Operator | Aug 2003 |
| 14305 | Intercoastal Operating Co. | | Oil Operator | Dec 1980 |
| 14306 | Intercontinental Petroleum | | Oil Operator | Oct 2012 |
| 14307 | Intercontinental Tech Group Inc. | | Oil & Gas Operator | Dec 2004 |
| 14308 | Intergrated Drill & Expl Inc | Tulsa, OK 74136-1071 | Oil & Gas Operator | Sep 1994 |
| 14309 | Intergrated Petroleum Corp. | Abilene, TX 79602 | Oil & Gas Operator | Apr 2025 |
| 14310 | Intergy Production LLC | Edmond, OK 73083 | Oil & Gas Operator | Feb 2025 |
| 14311 | Intergy, Inc. | Lomita, CA 90717 | Oil Operator | Jun 1997 |
| 14312 | Interior Oil Cor | | Gas Operator | Jun 1990 |
| 14313 | Interior Oil Corporation | Derby, KS 67037 | Oil & Gas Operator | Jan 2023 |
| 14314 | Interline Resources Corp | Casper, WY 82601 | Oil & Gas Operator | Oct 2009 |
| 14315 | Intermountain Leasing, Inc. | Billings, MT 59103 | Gas Operator | Mar 2020 |
| 14316 | Intermountain Oil Co | | Oil & Gas Operator | Nov 2003 |
| 14317 | Intermountain Operating, Inc. | Billings, MT 59103 | Oil & Gas Operator | Jul 2001 |
| 14318 | Intermountain Petroleum Co | | Oil Operator | Dec 2011 |
| 14319 | Intermountain Refining Co, Inc | Farmington, NM 87499 | Gas Operator | Aug 2006 |
| 14320 | International Basic Res., Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 1996 |
| 14321 | International Energy Company LLC | Tulsa, OK 74136-3922 | Oil & Gas Operator | Jan 2025 |
| 14322 | International Energy Corporation | Tulsa, OK 74136-3922 | Oil & Gas Operator | Dec 2018 |
| 14323 | International Oil & Gas Corp. | | Oil & Gas Operator | Dec 1986 |
| 14324 | International Oil&Gas Consultant | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 14325 | International Petroleum Service, LLC | | Oil Operator | Dec 2017 |
| 14326 | International Ventures, Inc. | Pogasa Springs, CO 81147 | Oil Operator | Jul 1996 |
| 14327 | International Western Oil Corp | Weatherford, TX 76086 | Oil & Gas Operator | Apr 2025 |
| 14328 | Internorth Inc | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2014 |
| 14329 | Interstate Energy Inc | | Oil & Gas Operator | Dec 2002 |
| 14330 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2025 |
| 14331 | Interstate Gas Co. | | Gas Operator | Dec 1941 |
| 14332 | Interstate Gas MKT Inc | Indiana, PA 15701 | Oil & Gas Operator | Dec 2018 |
| 14333 | Interstate Natural Gas Company, LLC | Pikeville, KY 41502 | Oil & Gas Operator | Dec 2023 |
| 14334 | Interstate Operating LLC | Tulsa, OK 74101-0535 | Oil & Gas Operator | Aug 2013 |
| 14335 | Interstate Producing Ser Inc | | Oil & Gas Operator | May 1986 |
| 14336 | Interstate Producing Servs,Inc | | Oil & Gas Operator | May 1987 |
| 14337 | Interstate Production Company, Inc. | Buckhannon, WV 26201-0000 | Oil & Gas Operator | Dec 2021 |
| 14338 | Intoil, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Dec 2002 |
| 14339 | Intrepid Drilling, LLC | | Oil & Gas Operator | Jan 2025 |
| 14340 | Intrepid Energy Corporation | Independence, KS 67301 | Oil Operator | Mar 2016 |
| 14341 | Intrepid Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2021 |
| 14342 | Intrepid Operating LTD., Co | Hobbs, NM 88241 | Oil & Gas Operator | Nov 2009 |
| 14343 | Intrepid Production Corporation | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 14344 | Investco Oil And Gas Inc | | Oil & Gas Operator | Jan 2025 |
| 14345 | Investment Equipment LLC | FT Morgan, CO 80701 | Oil & Gas Operator | Feb 2025 |
| 14346 | Investment Land Services Inc | | Oil Operator | Oct 2001 |
| 14347 | Investment Operating Co | Stillwater, OK 74075-8572 | Oil Operator | Sep 2024 |
| 14348 | Investment Trends Corp. | | Gas Operator | Mar 1988 |
| 14349 | Investors Drilli | | Gas Operator | Jan 1993 |
| 14350 | Investors Oil, Inc. | | Oil Operator | Mar 1985 |
| 14351 | Investors Resources Corp | Edmond, OK 73034 | Oil & Gas Operator | Feb 2025 |
| 14352 | Invitation Energy, Incorporated | | Oil & Gas Operator | Dec 2021 |
| 14353 | Invito Operating, LLC | McKinney, TX 75070 | Oil & Gas Operator | Feb 2025 |
| 14354 | Invoil, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Apr 2025 |
| 14355 | Iochem Corporation | Oklahoma City, OK 73118-7483 | Oil & Gas Operator | Jan 2025 |
| 14356 | Ioe Acres V LLC | Perry, NY 14530 | Gas Operator | Dec 2023 |
| 14357 | Iola Wildcat LLC | Kansas City, MO 64190 | Oil Operator | Dec 2024 |
| 14358 | Iowa Production Company, Inc. | | Oil & Gas Operator | Jan 1992 |
| 14359 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 14360 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Apr 2025 |
| 14361 | Ipas Oil Company LLC | Pratt, KS 67124 | Oil Operator | Dec 2019 |
| 14362 | Ipr Energy Partners, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Aug 2014 |
| 14363 | Ipr Energy Partners, LLC | Bowie, TX 76230 | Oil & Gas Operator | Apr 2025 |
| 14364 | Ipr USA Corp. | Irving, TX 75039 | Oil & Gas Operator | Jun 2009 |
| 14365 | Ipt Oil Company | Evansville, IN 47706 | Oil & Gas Operator | Apr 2025 |
| 14366 | Ira Oil & Gas LLC | Addison, TX 75001 | Oil & Gas Operator | Jul 2008 |
| 14367 | Ira Testers | Ira, TX 79527 | Oil & Gas Operator | Mar 2024 |
| 14368 | Ira Testers, LLC | Ira, TX 79527 | Oil Operator | Apr 2025 |
| 14369 | Irani Engineering | | Gas Operator | Dec 1995 |
| 14370 | Irene L. Heary Irrevocable Trust | Springville, NY 14141 | Gas Operator | Dec 2023 |
| 14371 | Irex Corporation | Englewood, CO 80111 | Oil & Gas Operator | May 2000 |
| 14372 | Iriart, Joe | Price, UT 84501 | Gas Operator | Feb 2025 |
| 14373 | Irion Corporation, The | San Angelo, TX 76906 | Oil & Gas Operator | Jun 2021 |
| 14374 | Irish City Oil & Gas, Inc. | Wimberley, TX 78676 | Oil & Gas Operator | Apr 2025 |
| 14375 | Irish Oil & Gas Co. | Houston, TX 77242 | Oil & Gas Operator | Aug 2003 |
| 14376 | Iron Creek Properties Inc | Casper, WY 82604 | Oil & Gas Operator | Feb 2025 |
| 14377 | Iron Hawk Energy Group Joint Venture | Tulsa, OK 74103-3305 | Oil & Gas Operator | Jan 2025 |
| 14378 | Iron Horse Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 14379 | Iron Oil Operating, LLC | | Oil & Gas Operator | Feb 2025 |
| 14380 | Iron Orchard Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 14381 | Iron Pennsylvania Land LLC | Waynesburg, PA 15370 | Gas Operator | Dec 2024 |
| 14382 | Iron Post Oil & Gas Co Inc | Bristow, OK 74010-4120 | Oil & Gas Operator | Jan 2025 |
| 14383 | Iron Ridge Operating, LLC | Austin, TX 78738 | Oil & Gas Operator | Apr 2025 |
| 14384 | Iron Sights Operating Inc | Stillwater, OK 74076 | Oil & Gas Operator | Jul 2022 |
| 14385 | Iron Springs Operating Co. Inc | | Oil & Gas Operator | Jan 2025 |
| 14386 | Iron Star Energy LLC | Houston, TX 77037-1142 | Oil & Gas Operator | Jan 2025 |
| 14387 | Ironhorse Operations, LLC | Kilgore, TX 75663 | Oil Operator | Apr 2025 |
| 14388 | Ironroc Energy | The Woodlands, TX 77381 | Oil & Gas Operator | Apr 2025 |
| 14389 | Ironwood Exploration Inc | | Oil & Gas Operator | Mar 1995 |
| 14390 | Ironwood Oil & Gas LLC | Houston, TX 77067 | Oil & Gas Operator | Jun 2014 |
| 14391 | Iroquois Ave LLC | Edinboro, PA 16412 | Gas Operator | Dec 2020 |
| 14392 | Iroquois Central School District | Elma, NY 14059 | Gas Operator | Dec 2023 |
| 14393 | Irvin Drilling Corp | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1990 |
| 14394 | Irvin Operations, Inc. | | Oil Operator | Aug 1996 |
| 14395 | Irvin Petroleum | Stinnett, TX 79083 | Oil & Gas Operator | Sep 1996 |
| 14396 | Irvin Petroleum Inc. | Stinnett, TX 79083 | Oil & Gas Operator | Apr 2016 |
| 14397 | Irwin H. Parnes | | Oil Operator | Jun 1982 |
| 14398 | Irwin-Crum | Nocona, TX 76255 | Oil Operator | Apr 2025 |
| 14399 | Isaacs Fairy J | Konawa, OK 74849-0134 | Oil Operator | Sep 2020 |
| 14400 | Isaacs Scott J Jr | Butler, PA 16002-0059 | Gas Operator | Feb 2025 |