| 21201 | Noco Investment Company Inc | Tulsa, OK 74159-0470 | Oil & Gas Operator | Mar 2005 |
| 21202 | Nodding Donkey Production | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 21203 | Nodding Donkey Resources LLC | Oklahoma City, OK 73112 | Oil Operator | Nov 2025 |
| 21204 | Noe And Woods | | Gas Operator | Jul 1985 |
| 21205 | Noe And Woods, Et Al | | Gas Operator | Jan 2008 |
| 21206 | Noe, T. C. Oil Acct. | Selman City, TX 75689 | Oil & Gas Operator | May 1996 |
| 21207 | Noel Operating, Inc. | Huntsville, TX 77340 | Oil & Gas Operator | Oct 2000 |
| 21208 | Noex, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 1998 |
| 21209 | Nog Production & Operating LLC | Goliad, TX 77963 | Oil & Gas Operator | Feb 2026 |
| 21210 | Nogp Operating Company Inc | Tomball, TX 77377 | Oil & Gas Operator | Dec 2025 |
| 21211 | Noir-Blanc | Russell, KS 67665 | Oil Operator | May 1992 |
| 21212 | Nokota Energy Corporation | Bakersfield, CA 93313 | Oil Operator | Feb 2026 |
| 21213 | Nokusu, LTD. | Dallas, TX 75231 | Oil & Gas Operator | Sep 2008 |
| 21214 | Nolan Exploration & Cattle Co | George West, TX 78022 | Oil & Gas Operator | Oct 2011 |
| 21215 | Nolen Oil & Gas | Beeville, TX 78102 | Oil & Gas Operator | Feb 2026 |
| 21216 | Nolen, Charles R. | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2006 |
| 21217 | Nolin Rural Electric Coop | Elizabethtown, KY 42701 | Gas Operator | Dec 2023 |
| 21218 | Nolt, Leonard R. And Marian M. Nolt | Dundee, NY 14837 | Gas Operator | Dec 2024 |
| 21219 | Nolte, Mike E. | Longview, TX 75606 | Oil & Gas Operator | Jun 1995 |
| 21220 | Nolte, Mike E., Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2006 |
| 21221 | Nolteco, Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 21222 | Nomeco Oil & Gas Co. | Jackson, MI 49204 | Oil & Gas Operator | Dec 1994 |
| 21223 | Nomoc Oil Company Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2006 |
| 21224 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 21225 | Nondorf Oil & Gas Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2008 |
| 21226 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Jan 2026 |
| 21227 | Noonday Exploration, LLC | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 21228 | Nooner Cynthia | Ratliff City, OK 73481 | Oil Operator | Oct 2025 |
| 21229 | Nor-Am Exploration | | Oil Operator | Jun 1981 |
| 21230 | Nor-Tex Gas Corporation | Dallas, TX 75251 | Oil & Gas Operator | Aug 1997 |
| 21231 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 21232 | Nora Company | Pampa, TX 79065 | Oil & Gas Operator | Feb 2026 |
| 21233 | Nora Lee Clark | | Gas Operator | Feb 2017 |
| 21234 | Noram Field Services Corp. | | Oil Operator | Apr 1999 |
| 21235 | Noram Operating Company | Houston, TX 77002 | Oil Operator | Oct 1999 |
| 21236 | Noramco Production, LLC | Midland, TX 79710 | Oil & Gas Operator | Jan 2023 |
| 21237 | Norbay Oil Corp. | | Oil & Gas Operator | Dec 1999 |
| 21238 | Norbert J Baumgart | Warren, PA 16365-3403 | Oil & Gas Operator | Dec 2009 |
| 21239 | Norcen Energy Inc | | Oil Operator | Dec 1989 |
| 21240 | Norcen Explorer, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 1998 |
| 21241 | Norco Development, Inc. | | Oil Operator | Jul 1994 |
| 21242 | Nordan & Company | San Antonio, TX 78205 | Oil & Gas Operator | Jun 2004 |
| 21243 | Nordan Oil & Gas Corporation | Abilene, TX 79604 | Oil & Gas Operator | Feb 2018 |
| 21244 | Nordan Trust, The | San Antonio, TX 78205 | Oil & Gas Operator | Nov 2003 |
| 21245 | Nordic Oil Company | | Oil & Gas Operator | Dec 1999 |
| 21246 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 21247 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Feb 2026 |
| 21248 | Nordstrand/Galoostian Oil & Gas | Houston, TX 77056 | Oil Operator | Mar 1998 |
| 21249 | Norexco Inc. | | Oil & Gas Operator | Aug 1988 |
| 21250 | Norgas Energy | Lakehills, TX 78063 | Oil & Gas Operator | Feb 2026 |
| 21251 | Norman Brothers Tank Truck Inc | Pauls Valley, OK 73075 | Oil & Gas Operator | May 2020 |
| 21252 | Norman Kenneth W | Sasakwa, OK 74867-0086 | Oil Operator | Oct 2017 |
| 21253 | Norman L & Loretta E Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 21254 | Norman L Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 21255 | Norman Oil Corporation | Abilene, TX 79608 | Oil & Gas Operator | Mar 2000 |
| 21256 | Norman Production Company | Chandler, OK 74834-8538 | Oil & Gas Operator | May 2015 |
| 21257 | Norman, C. D. | Irving, TX 75015 | Oil & Gas Operator | Mar 2008 |
| 21258 | Nornew Inc | Houston, TX 77063-2140 | Oil & Gas Operator | Dec 2008 |
| 21259 | Norris, Robert E. III | Savannah, NY 13146 | Gas Operator | Dec 2024 |
| 21260 | Norse Energy Corp USA | | Gas Operator | Dec 2011 |
| 21261 | Norstar Development | Madras, OR 97741 | Oil Operator | Nov 2018 |
| 21262 | Norstar Petroleu | | Oil & Gas Operator | Dec 1996 |
| 21263 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Sep 2025 |
| 21264 | Nortex Energy, Inc. | Muenster, TX 76252 | Oil Operator | Feb 2026 |
| 21265 | Nortex Gas & Oil Co | Tulsa, OK 74135 | Oil & Gas Operator | Sep 1993 |
| 21266 | Nortex Oil & Gas, Inc. | | Oil Operator | Feb 1994 |
| 21267 | Nortex Production Co., LLC | Wichita Falls, TX 76310 | Oil Operator | Feb 2026 |
| 21268 | North Amer Oil & Gas Drilling Co Inc | Pleasantville, PA 16341-0197 | Oil Operator | Dec 1999 |
| 21269 | North Amer Oil Exp Inc | Trenton, OH 45067 | Oil Operator | Dec 2024 |
| 21270 | North Amer Petroleum Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2000 |
| 21271 | North American D | | Oil & Gas Operator | Sep 1986 |
| 21272 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 21273 | North American Drilling Corp | Plano, TX 75093 | Oil & Gas Operator | Feb 2026 |
| 21274 | North American Energy | | Oil & Gas Operator | Feb 1986 |
| 21275 | North American Energy Inc | Duncan, OK 73533-9604 | Oil & Gas Operator | Nov 2000 |
| 21276 | North American Exploration Co. | Abilene, TX 79602 | Oil & Gas Operator | Apr 1998 |
| 21277 | North American Natural Crude In. | Houston, TX 77077 | Gas Operator | Mar 2019 |
| 21278 | North American Operating, LLC | Ardmore, OK 73401 | Oil & Gas Operator | Dec 2025 |
| 21279 | North American Petroleum Inc | Scottsdale, AZ 85262 | Oil & Gas Operator | Dec 2024 |
| 21280 | North American Prod Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1998 |
| 21281 | North American Reserve Corp. | Houston, TX 77060 | Oil & Gas Operator | Oct 2010 |
| 21282 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 21283 | North American Royalties, Inc. | Chattanooga, TN 37408 | Oil & Gas Operator | Oct 2001 |
| 21284 | North American Technical Trading Company, Inc. | Oakbrook Terrace, IL 60181 | Oil Operator | Jan 2011 |
| 21285 | North Bound Exploration Co | Pauls Valley, OK 73075-0863 | Oil & Gas Operator | Jan 2018 |
| 21286 | North Cambria Fuel Co | Blairsville, PA 15717-7961 | Gas Operator | Dec 2008 |
| 21287 | North Canadian Production LLC | Okemah, OK 74859 | Oil & Gas Operator | Nov 2025 |
| 21288 | North Central Casing Puller Inc | Graham, TX 76450 | Oil & Gas Operator | Jan 1999 |
| 21289 | North Central Casing Pullers,Inc | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 21290 | North Central Drilling Co Inc | Mannford, OK 74044 | Oil & Gas Operator | May 2013 |
| 21291 | North Central Oil Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 21292 | North Central Oil Corp., Et Al | | Oil & Gas Operator | Mar 1977 |
| 21293 | North Central Texas Energy LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 21294 | North Coast Petroleum Inc | Hiram, OH 44234 | Oil & Gas Operator | Dec 1993 |
| 21295 | North Country Energy LLC | Amarillo, TX 79159 | Oil & Gas Operator | Feb 2026 |
| 21296 | North East Fuel Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2015 |
| 21297 | North East Gas & Oil Co | Scottsville, VA 24590-3962 | Oil & Gas Operator | Dec 2013 |
| 21298 | North Finn LLC | Casper, WY 82605 | Oil & Gas Operator | Dec 2025 |
| 21299 | North Fork Oil & Gas Inc | Brookville, PA 15825-7976 | Gas Operator | Dec 2005 |
| 21300 | North Fork Operating LP | Mustang, OK 73064 | Oil & Gas Operator | Feb 2026 |