| 20201 | North Plains Corp | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2025 |
| 20202 | North Plains Energy, LLC | | Oil & Gas Operator | Jan 2016 |
| 20203 | North Plains Oil | | Oil Operator | Jul 1990 |
| 20204 | North Range Resources, LLC | | Oil & Gas Operator | Nov 2023 |
| 20205 | North Ridge Corporation | Duncanville, TX 75137 | Oil & Gas Operator | Apr 2026 |
| 20206 | North Ridge Energy Inc | Rome, OH 44085-9713 | Oil & Gas Operator | Dec 2025 |
| 20207 | North Shore Energy, L.L.C. | Austin, TX 78750 | Oil & Gas Operator | Apr 2026 |
| 20208 | North Shore Exploration & Prod LLC | Broomfield, CO 80021 | Oil & Gas Operator | Feb 2026 |
| 20209 | North Silo Resources LLC | Houston, TX 77055 | Oil & Gas Operator | Jan 2026 |
| 20210 | North Slope Borough | | Gas Operator | Feb 2026 |
| 20211 | North South Oil, LLC | Luling, TX 78648 | Oil Operator | Apr 2026 |
| 20212 | North Star Energy Resources LLC | Waynesburg, PA 15370-3833 | Gas Operator | Dec 2025 |
| 20213 | North Star Energy, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Jan 2010 |
| 20214 | North Star Exploration Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2026 |
| 20215 | North Star Petroleum Corp. | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1993 |
| 20216 | North Texas Energy,Inc. | Dallas, TX 75252 | Oil Operator | Apr 2026 |
| 20217 | North Texas Llano Operating Corp | Dallas, TX 75225 | Oil & Gas Operator | Apr 2026 |
| 20218 | North Texas Oil & Gas, LLC | Edmond, OK 73013 | Oil & Gas Operator | Apr 2026 |
| 20219 | North Texas Plugging, LLC | Denton, TX 76205 | Oil & Gas Operator | Apr 2026 |
| 20220 | North Texas Pure Gold, LLC | Graham, TX 76450 | Oil Operator | Sep 2008 |
| 20221 | North Valley Gaswell Services | | Gas Operator | Dec 2025 |
| 20222 | North Valley Oil & Gas Co. | | Oil & Gas Operator | Dec 1996 |
| 20223 | Northam Oil Company Inc | Ada, OK 74820-3334 | Oil & Gas Operator | Jan 2026 |
| 20224 | Northamerican Service Group | Katy, TX 77449 | Oil & Gas Operator | Apr 2026 |
| 20225 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 20226 | Northbrook Oil & Gas Company | Norman, OK 73070-4916 | Oil & Gas Operator | Jun 2016 |
| 20227 | Northcoast Oil Company | | Oil & Gas Operator | Mar 2009 |
| 20228 | Northcote Cleveland LLC | Borger, TX 79008 | Oil & Gas Operator | Nov 2025 |
| 20229 | Northcott Exploration Co. Inc. | | Oil & Gas Operator | Dec 1987 |
| 20230 | Northcutt Production | Bangs, TX 76823 | Oil & Gas Operator | Apr 2026 |
| 20231 | Northeast Natural Energy LLC | Charleston, WV 25301-2719 | Oil & Gas Operator | Feb 2026 |
| 20232 | Northeast Resources | | Oil & Gas Operator | Jan 1992 |
| 20233 | Northeast Shelf Energy, L.L.C. | | Oil & Gas Operator | Jun 2017 |
| 20234 | Northeast Texas Production Co. | Marshall, TX 75671 | Oil & Gas Operator | Apr 2026 |
| 20235 | Northeastern Energy | Warren, OH 44484 | Oil & Gas Operator | Dec 1991 |
| 20236 | Northeastern Energy Corp | | Oil & Gas Operator | Dec 2015 |
| 20237 | Northeastern Opr Co Inc | Shelocta, PA 15774-2346 | Gas Operator | Dec 2025 |
| 20238 | Northern Energy Devel. Co. | | Gas Operator | Dec 1995 |
| 20239 | Northern Energy Management | | Oil & Gas Operator | Nov 2019 |
| 20240 | Northern Gas Pro | | Gas Operator | Jun 1994 |
| 20241 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 20242 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2025 |
| 20243 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 20244 | Northern Michigan Oil And Gas Corp | | Oil & Gas Operator | Sep 2025 |
| 20245 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 20246 | Northern Oil Production, Inc. | Bozeman, MT 59718 | Oil & Gas Operator | Jan 2026 |
| 20247 | Northern Pacific Oil And Gas Incorporated | Houston, TX 77024 | Oil & Gas Operator | Dec 2022 |
| 20248 | Northern Processors Inc | The Woodlands, TX 77387-9385 | Oil & Gas Operator | Sep 2010 |
| 20249 | Northern Producing LLC | Shelby, MT 59474 | Oil Operator | Jan 2026 |
| 20250 | Northern Production Co | Gillette, WY 82717 | Oil & Gas Operator | Apr 2013 |
| 20251 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 20252 | Northfield Enterprises | Bryan, TX 77805 | Oil & Gas Operator | Dec 1993 |
| 20253 | Northfield Enterprises, Inc. | Bryan, TX 77802 | Oil & Gas Operator | Apr 2026 |
| 20254 | Northfork Exploration LLC | Electra, TX 76360 | Oil Operator | Apr 2026 |
| 20255 | Northla Productions, LLC | | Oil & Gas Operator | Dec 2024 |
| 20256 | Northland Holdings, Inc. | Calgary, AB T2J 7H2 | Gas Operator | May 2017 |
| 20257 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |
| 20258 | Northland Petroleum, Inc. | Houston, TX 77043 | Oil Operator | Dec 2018 |
| 20259 | Northland Petroleum, LLC | Houston, TX 77043 | Oil Operator | Apr 2026 |
| 20260 | Northport Production Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 20261 | Northridge Exploration, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2026 |
| 20262 | Northridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2026 |
| 20263 | Northrop, Marilynne | Westfield, NY 14787 | Gas Operator | Dec 2024 |
| 20264 | Northshore Petroleum LLC | | Oil Operator | Feb 2009 |
| 20265 | Northstar Energy Corporation | Charleston, WV 25337-0000 | Oil & Gas Operator | Dec 2021 |
| 20266 | Northstar Energy LLC | | Gas Operator | Sep 2020 |
| 20267 | Northstar Gas Company Of Texas | Houston, TX 77057-2768 | Oil & Gas Operator | Jan 2026 |
| 20268 | Northstar Gas Company, Inc. | | Oil & Gas Operator | Jan 2016 |
| 20269 | Northstar Gulfsands, LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2006 |
| 20270 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Dec 2025 |
| 20271 | Northstar Offshore Group, LLC | | Oil & Gas Operator | Apr 2020 |
| 20272 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 20273 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 20274 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 20275 | Northstar Resources, LLC | Houston, TX 77018 | Oil & Gas Operator | Apr 2026 |
| 20276 | Northwest Airport Management, LP | Spring, TX 77379 | Gas Operator | Apr 2026 |
| 20277 | Northwest Disposal Corporation | Laverne, OK 73848-0504 | Oil & Gas Operator | Jul 2014 |
| 20278 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 20279 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 20280 | Northwest Exploration Co | Salt Lake City, UT 84108-0900 | Oil & Gas Operator | Sep 1991 |
| 20281 | Northwest Louisiana Production LLC | | Oil & Gas Operator | Dec 2024 |
| 20282 | Northwest Natural Gas Co | Albion, PA 16401-9998 | Oil & Gas Operator | Dec 1990 |
| 20283 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 20284 | Northwest Petroleum Inc. | | Oil & Gas Operator | Dec 2025 |
| 20285 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 20286 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 20287 | Northwestern Corporation | Butte, MT 59701 | Oil & Gas Operator | Jan 2026 |
| 20288 | Northwestern Energy, LLC | Butte, MT 59701 | Oil & Gas Operator | Dec 2004 |
| 20289 | Northwestern Inc | East Brady, PA 16028 | Gas Operator | Dec 2012 |
| 20290 | Northwestern Natural Gas | | Gas Operator | Aug 2000 |
| 20291 | Northwestern Production LLC | | Oil & Gas Operator | Apr 2024 |
| 20292 | Northwind Development Company | | Oil Operator | Oct 1995 |
| 20293 | Northwind Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1995 |
| 20294 | Northwind Oil & Gas, LLC | | Oil & Gas Operator | Nov 2019 |
| 20295 | Northwind Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | May 1998 |
| 20296 | Northwood Energy Corp | Columbus, OH 43221 | Oil & Gas Operator | Dec 2025 |
| 20297 | Norton Drilling Co. | Levelland, TX 79336 | Oil & Gas Operator | Nov 2001 |
| 20298 | Norton Frickey | Lakewood, CO 80215 | Oil & Gas Operator | Dec 2023 |
| 20299 | Norton Oil Co. | | Oil & Gas Operator | Jun 1984 |
| 20300 | Norvel Douglas Oil Inc. | H SPG NTL PK, AR 71909 | Oil Operator | Oct 2025 |