| 20201 | N. R. Price | | Oil & Gas Operator | Nov 1983 |
| 20202 | N. T. Rutledge Oil Co. | | Oil Operator | Jan 1989 |
| 20203 | N. W. Corporation | | Gas Operator | Jan 1989 |
| 20204 | N.F. Producers, Inc. | Berthoud, CO 80513 | Oil Operator | Jan 2025 |
| 20205 | N.L.S., Inc. | Kimberling City, MO 65686 | Oil & Gas Operator | Aug 2016 |
| 20206 | Nabers, Lynn | Austin, TX 78751 | Gas Operator | Jul 2010 |
| 20207 | Nabob Production Company | Amarillo, TX 79105 | Gas Operator | Dec 1991 |
| 20208 | Nabors Drilling Company, Inc. | | Oil & Gas Operator | Sep 1977 |
| 20209 | Nabors Well Services LTD | Houston, TX 77067-4536 | Oil Operator | Apr 2011 |
| 20210 | Nabors-Johnson Prod Co., Inc. | | Oil & Gas Operator | Dec 2020 |
| 20211 | Nacatosh Gas Incorporated | | Oil & Gas Operator | Aug 2013 |
| 20212 | Naco Production | Midland, TX 79708 | Oil & Gas Operator | Aug 2003 |
| 20213 | Nacogdoches Oil & Gas Inc | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2025 |
| 20214 | Nacogdoches Oil & Gas, LLC | Nacogdoches, TX 75961 | Oil & Gas Operator | Dec 2017 |
| 20215 | Nadcf Recovery Group, Inc. | Chapin, SC 29036 | Oil & Gas Operator | May 2025 |
| 20216 | Nadel & Gussman-Jetta Oper. Co. | | Oil & Gas Operator | Mar 2012 |
| 20217 | Nadel And Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 20218 | Nadel And Gussman Heyco, LLC | Roswell, NM 88202 | Oil & Gas Operator | Dec 2014 |
| 20219 | Nadel And Gussman Permian,L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | May 2025 |
| 20220 | Nadel And Gussman Rockies, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2012 |
| 20221 | Nadel And Gussman Ruston, LLC | | Oil & Gas Operator | Dec 2024 |
| 20222 | Nadel And Gussman, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 20223 | Nadk, LLC | Orem, UT 84097 | Oil & Gas Operator | Nov 2024 |
| 20224 | Nadsoilco LLC | Chicago, IL 60606 | Oil & Gas Operator | May 2025 |
| 20225 | Nae, Inc. | Kerrville, TX 78028 | Oil Operator | Jan 2025 |
| 20226 | Naftex Operating Company | | Oil & Gas Operator | Mar 2025 |
| 20227 | Nagel, Arthur F. & Elaine L. | South Dayton, NY 14138 | Gas Operator | Dec 2023 |
| 20228 | Nahama & Weagant Energy Company | | Oil & Gas Operator | Dec 1997 |
| 20229 | Naifco Oil & Gas LLC | Oklahoma City, OK 73107 | Oil & Gas Operator | Feb 2025 |
| 20230 | Nail Stephen Dba Nail Oil & Gas | Maud, OK 74854 | Oil Operator | Dec 2024 |
| 20231 | Nails Operating Company LLC | Hondo, TX 78861 | Oil Operator | May 2025 |
| 20232 | Nairn, Robert | Elkhart, KS 67950 | Gas Operator | Apr 2011 |
| 20233 | Nall Oil & Gas | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2025 |
| 20234 | Nally, Joseph L | Uniontown, KY 42461 | Oil & Gas Operator | Dec 2021 |
| 20235 | Nami Resources Company, LLC | | Oil & Gas Operator | Dec 2023 |
| 20236 | Nana Oil & Gas Inc. | | Oil & Gas Operator | Jan 2018 |
| 20237 | Nance Engineering Inc. | Houston, TX 77058 | Oil & Gas Operator | Mar 2002 |
| 20238 | Nance Petroleum Corporation | Billings, MT 59103-7168 | Oil & Gas Operator | Nov 2007 |
| 20239 | Nanco Resources, LLC | | Gas Operator | Dec 2021 |
| 20240 | Nancy Oil & Gas Corp | Tulsa, OK 74101 | Oil Operator | Apr 2020 |
| 20241 | Nancy Wilcox E Qualls | Farmington, NM 87410 | Gas Operator | May 2017 |
| 20242 | Nanke Energy LLC | Westminster, CO 80234 | Oil & Gas Operator | Dec 2024 |
| 20243 | Narbo Farms, LTD. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 20244 | Nard Inc | Buffalo, OK 73834-9737 | Oil Operator | Dec 2005 |
| 20245 | Naro Oil Corporation | Dallas, TX 75230-1986 | Oil & Gas Operator | Nov 2003 |
| 20246 | Nasco Petroleum L.L.C. | | Oil & Gas Operator | Mar 2025 |
| 20247 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Jan 2025 |
| 20248 | Nashville Associates Inc | | Oil & Gas Operator | Dec 2003 |
| 20249 | Nassau Resources Inc | Denver, CO 80222 | Oil & Gas Operator | Mar 2000 |
| 20250 | Nasser Oil & Gas, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 1998 |
| 20251 | Nat. Gas Pipeline Co Of Amer. | | Oil Operator | Dec 2008 |
| 20252 | Nataraja Oil Corporation | Foley, AL 36535 | Oil Operator | Aug 2010 |
| 20253 | Natchez Operating, LLC | | Oil & Gas Operator | Nov 2023 |
| 20254 | Natchez Pipe & Equip. Co., Inc | | Oil Operator | Nov 1981 |
| 20255 | Nathan C. Hale | | Oil & Gas Operator | Jan 2025 |
| 20256 | Nathan Hale Oil Co. | | Oil & Gas Operator | Jan 2025 |
| 20257 | Nathan Petroleum Corp., Yahn & Yahn Inc | Rexville, NY 14877 | Oil & Gas Operator | Dec 2023 |
| 20258 | Nathan Petroleum Corporation | Rexville, NY 14877 | Oil & Gas Operator | Dec 2023 |
| 20259 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 20260 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 20261 | National Cooperative RFG Assoc | McPherson, KS 67460-1404 | Oil & Gas Operator | Jun 2006 |
| 20262 | National Develop | | Oil & Gas Operator | Jan 1990 |
| 20263 | National Energy Exp Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 20264 | National Energy Group, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 20265 | National Exploration Company | | Oil & Gas Operator | Mar 1982 |
| 20266 | National Fuel Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Mar 2025 |
| 20267 | National Fuel Gas Supply Corporation | | Gas Operator | Dec 2010 |
| 20268 | National Investors Group | Warren, OH 44481 | Oil & Gas Operator | Nov 1996 |
| 20269 | National Offshore LP | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2008 |
| 20270 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 20271 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 20272 | National Oil Company (Ohio) The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 20273 | National Onshore LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 20274 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 20275 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 20276 | National Pride Operating | Parker, CO 80134 | Oil & Gas Operator | Dec 2017 |
| 20277 | National Surface & Minerals, LLC | Addison, TX 75001 | Gas Operator | Jan 2023 |
| 20278 | National Treasure Mines | San Marina, CA 91118 | Oil Operator | Dec 1998 |
| 20279 | Native Exploration Operating LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Feb 2025 |
| 20280 | Native Gas Company LLC | Edmond, OK 73083-7435 | Oil & Gas Operator | Mar 2015 |
| 20281 | Nativity Of Our Lord | Orchard Park, NY 14127 | Gas Operator | Dec 2023 |
| 20282 | Natl Fuel Gas Supply Corp | Williamsville, NY 14221-5887 | Oil & Gas Operator | Dec 2009 |
| 20283 | Natland Energy Corp | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 1996 |
| 20284 | Natomas North America Inc | | Oil & Gas Operator | Aug 1993 |
| 20285 | Natomas-McCormick-Coastal | | Oil & Gas Operator | Feb 1984 |
| 20286 | Natrona County Holdings LLC | Austin, TX 78701 | Oil & Gas Operator | Nov 2020 |
| 20287 | Natural Capital LLC | Castle Rock, CO 80104 | Oil & Gas Operator | Dec 2009 |
| 20288 | Natural Energy Dev Corp | Pittsburgh, PA 15241-1548 | Oil & Gas Operator | Dec 2018 |
| 20289 | Natural Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Jul 1997 |
| 20290 | Natural Gas & Oi | | Gas Operator | Dec 1987 |
| 20291 | Natural Gas & Oil, Inc. | Fayette, AL 35555 | Oil & Gas Operator | Feb 2025 |
| 20292 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | May 2025 |
| 20293 | Natural Gas Anadarko Inc | Perryton, TX 79070 | Oil & Gas Operator | May 1999 |
| 20294 | Natural Gas Compression Corp | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 20295 | Natural Gas Corp Of Ca | Vernal, UT 84078 | Oil & Gas Operator | Jun 1989 |
| 20296 | Natural Gas Corp Of California | Vernal, UT 84078 | Oil & Gas Operator | Dec 1989 |
| 20297 | Natural Gas Corp. Of Calif. | | Oil & Gas Operator | Dec 1987 |
| 20298 | Natural Gas Expl | | Oil & Gas Operator | Jul 1990 |
| 20299 | Natural Gas MKTG. & Storage Co. | Houston, TX 77251 | Oil & Gas Operator | Sep 1996 |
| 20300 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |