| 20301 | Northern Energy Devel. Co. | | Gas Operator | Dec 1995 |
| 20302 | Northern Energy Management | | Oil & Gas Operator | Nov 2019 |
| 20303 | Northern Gas Pro | | Gas Operator | Jun 1994 |
| 20304 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 20305 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | May 2024 |
| 20306 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 20307 | Northern Michigan Oil & Gas Corporation | | Oil & Gas Operator | May 2024 |
| 20308 | Northern Natural Gas Prod | | Gas Operator | Oct 1989 |
| 20309 | Northern Natural Gas Producing | | Gas Operator | Jan 1991 |
| 20310 | Northern Oil Production, Inc. | Bozeman, MT 59718 | Oil & Gas Operator | Jun 2024 |
| 20311 | Northern Pacific Oil And Gas Incorporated | Houston, TX 77024 | Oil & Gas Operator | Dec 2022 |
| 20312 | Northern Processors Inc | The Woodlands, TX 77387-9385-9385 | Oil & Gas Operator | Sep 2010 |
| 20313 | Northern Producing LLC | Shelby, MT 59474 | Oil Operator | Jun 2024 |
| 20314 | Northern Production Co | Gillette, WY 82717 | Oil & Gas Operator | Apr 2013 |
| 20315 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
| 20316 | Northfield Enterprises | Bryan, TX 77805 | Oil & Gas Operator | Dec 1993 |
| 20317 | Northfield Enterprises, Inc. | Bryan, TX 77805 | Oil & Gas Operator | Sep 2024 |
| 20318 | Northfork Exploration LLC | Electra, TX 76360 | Oil Operator | Sep 2024 |
| 20319 | Northla Productions, LLC | | Oil & Gas Operator | Jan 2024 |
| 20320 | Northland Holdings, Inc. | Calgary, AB T2J 7H2 | Gas Operator | May 2017 |
| 20321 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |
| 20322 | Northland Petroleum, Inc. | Houston, TX 77043 | Oil Operator | Dec 2018 |
| 20323 | Northland Petroleum, LLC | Houston, TX 77043 | Oil Operator | Sep 2024 |
| 20324 | Northport Production Company | Oklahoma City, OK 73113 | Oil & Gas Operator | Jun 2024 |
| 20325 | Northridge Exploration, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2024 |
| 20326 | Northridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2024 |
| 20327 | Northrop, Marilynne | Westfield, NY 14787 | Gas Operator | Dec 2023 |
| 20328 | Northshore Petroleum LLC | | Oil Operator | Feb 2009 |
| 20329 | Northstar Energy Corporation | Charleston, WV 25337-0000 | Oil & Gas Operator | Dec 2021 |
| 20330 | Northstar Energy LLC | | Gas Operator | Sep 2020 |
| 20331 | Northstar Gas Company Inc | | Oil & Gas Operator | Jan 2016 |
| 20332 | Northstar Gas Company Of Texas | Houston, TX 77057-2768 | Oil & Gas Operator | Jan 2016 |
| 20333 | Northstar Gulfsands, LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2006 |
| 20334 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | May 2024 |
| 20335 | Northstar Offshore Group, LLC | | Oil & Gas Operator | Apr 2020 |
| 20336 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 20337 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 20338 | Northstar Operating Company Of Texas | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 20339 | Northwest Airport Management, LP | Spring, TX 77379 | Gas Operator | Sep 2024 |
| 20340 | Northwest Disposal Corporation | Laverne, OK 73848-0504 | Oil & Gas Operator | Jul 2014 |
| 20341 | Northwest Energy LLC | Buffalo, WY 82834 | Gas Operator | Jan 2010 |
| 20342 | Northwest Exploration | | Oil & Gas Operator | Dec 1984 |
| 20343 | Northwest Exploration Co | Salt Lake City, UT 84108-0900 | Oil & Gas Operator | Sep 1991 |
| 20344 | Northwest Natural Gas Co | Albion, PA 16401-9998 | Oil & Gas Operator | Dec 1990 |
| 20345 | Northwest Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Jun 2014 |
| 20346 | Northwest Petroleum Inc. | | Oil & Gas Operator | Jun 2024 |
| 20347 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 20348 | Northwest Well Service, Inc. | Merino, CO 80741 | Oil Operator | Mar 2002 |
| 20349 | Northwestern Corporation | Butte, MT 59701 | Oil & Gas Operator | Jul 2024 |
| 20350 | Northwestern Energy, LLC | Butte, MT 59701 | Oil & Gas Operator | Dec 2004 |
| 20351 | Northwestern Inc | East Brady, PA 16028 | Gas Operator | Dec 2012 |
| 20352 | Northwestern Natural Gas | | Gas Operator | Aug 2000 |
| 20353 | Northwestern Production LLC | | Oil & Gas Operator | Apr 2024 |
| 20354 | Northwind Development Company | | Oil Operator | Oct 1995 |
| 20355 | Northwind Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 1995 |
| 20356 | Northwind Oil & Gas, LLC | | Oil & Gas Operator | Nov 2019 |
| 20357 | Northwind Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | May 1998 |
| 20358 | Northwood Energy Corp | Columbus, OH 43221 | Oil & Gas Operator | Jun 2024 |
| 20359 | Norton Drilling Co. | Levelland, TX 79336 | Oil & Gas Operator | Nov 2001 |
| 20360 | Norton Frickey | Lakewood, CO 80215 | Oil & Gas Operator | Dec 2023 |
| 20361 | Norton Oil Company Inc | | Oil & Gas Operator | Mar 2008 |
| 20362 | Norvel Douglas Oil Inc. | H SPG NTL PK, AR 71909 | Oil Operator | Sep 2024 |
| 20363 | Norwes Industries, Inc. | | Oil & Gas Operator | Jun 2000 |
| 20364 | Norwood Energy, Inc | | Oil Operator | Dec 2015 |
| 20365 | Norwood Oil | Greeley, CO 80634 | Oil Operator | Mar 1996 |
| 20366 | Norwood Oil Corp | Malakoff, TX 75148 | Oil & Gas Operator | Oct 1995 |
| 20367 | Norwood, A. N., Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 1997 |
| 20368 | Nosivad Oil, Inc. | Clyde, TX 79510 | Oil & Gas Operator | Sep 2024 |
| 20369 | Nossaman E Oil Inc | Del City, OK 73155-5449 | Oil Operator | Oct 2002 |
| 20370 | Nott, Gregory | Wichita, KS 67214 | Oil Operator | May 2024 |
| 20371 | Notting Hill Energy LLC | FT Worth, TX 76101 | Oil & Gas Operator | Jul 2024 |
| 20372 | Nottis, David J. | West Valley, NY 14171 | Gas Operator | Dec 2023 |
| 20373 | Noumenon Corporation | Core, WV 26541-7072 | Oil & Gas Operator | Dec 2023 |
| 20374 | Nova Energy Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2003 |
| 20375 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 20376 | Nova Natural Res Corp | Denver, CO 80202 | Oil & Gas Operator | Nov 1989 |
| 20377 | Nova Petroleum Cororation | | Oil & Gas Operator | Mar 1987 |
| 20378 | Nova Petroleum Corp | Salt Lake City, UT 84147 | Oil & Gas Operator | Sep 1986 |
| 20379 | Novco Operating Company | Novice, TX 79538 | Oil & Gas Operator | Sep 2024 |
| 20380 | Novo Energy Resources | Houston, TX 77006 | Oil & Gas Operator | Sep 2024 |
| 20381 | Novo Exploration Corporation | Hurst, TX 76053 | Oil & Gas Operator | Jun 2020 |
| 20382 | Novo Oil & Gas Northern Delaware, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2024 |
| 20383 | Novus Louisiana LLC | | Oil & Gas Operator | Mar 2006 |
| 20384 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Jul 2024 |
| 20385 | Now Development Co., Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 2017 |
| 20386 | Nowata Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1997 |
| 20387 | Nowata Petroleum Operating Co | Nowata, OK 74048-9617 | Oil Operator | Aug 2014 |
| 20388 | Nowea, Inc | Melbourne, FL 32901 | Oil Operator | Dec 2022 |
| 20389 | Noxxe | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2021 |
| 20390 | Noxxe Oil And Gas, LLC | Houston, TX 77269 | Oil & Gas Operator | Sep 2024 |
| 20391 | NP Energy Corporation | Englewood, CO 80111 | Oil & Gas Operator | Jun 1989 |
| 20392 | NP Resources, LLC | | Oil & Gas Operator | Aug 2022 |
| 20393 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | May 2024 |
| 20394 | NRC Development, LLC | | Gas Operator | Nov 2002 |
| 20395 | NRD - Rein Resources, A General Partnership | Union, KY 41091 | Oil Operator | May 2024 |
| 20396 | NRG Assets Management, LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2016 |
| 20397 | NRG Oil LLC | Stratford, OK 74872-9732 | Oil Operator | Feb 2012 |
| 20398 | NRG Resources, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1987 |
| 20399 | NRPC Operating, LLC | Dallas, TX 75206 | Oil Operator | Feb 2012 |
| 20400 | NT Minerals, LLC | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2024 |