| 20101 | Nobleson Operating, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Jun 1996 |
| 20102 | Noc | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 2020 |
| 20103 | Noco Investment Company Inc | Tulsa, OK 74159-0470 | Oil & Gas Operator | Mar 2005 |
| 20104 | Nodding Donkey Production | Pampa, TX 79065 | Oil & Gas Operator | Apr 2026 |
| 20105 | Noe And Woods, Et Al | | Gas Operator | Jan 2008 |
| 20106 | Noe, T. C. Oil Acct. | Selman City, TX 75689 | Oil & Gas Operator | May 1996 |
| 20107 | Noel Operating, Inc. | Huntsville, TX 77340 | Oil & Gas Operator | Oct 2000 |
| 20108 | Noex, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 1998 |
| 20109 | Nog Production & Operating LLC | Goliad, TX 77963 | Oil & Gas Operator | Apr 2026 |
| 20110 | Nogp Operating Company Inc | Tomball, TX 77377 | Oil & Gas Operator | Jan 2026 |
| 20111 | Noir-Blanc | Russell, KS 67665 | Oil Operator | May 1992 |
| 20112 | Nokota Energy Corporation | Bakersfield, CA 93313 | Oil Operator | Apr 2026 |
| 20113 | Nokusu, LTD. | Dallas, TX 75231 | Oil & Gas Operator | Sep 2008 |
| 20114 | Nolen Oil & Gas | Beeville, TX 78102 | Oil & Gas Operator | Apr 2026 |
| 20115 | Nolen, Charles R. | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2006 |
| 20116 | Nolin Rural Electric Coop | Elizabethtown, KY 42701 | Gas Operator | Dec 2024 |
| 20117 | Nolt, Leonard R. And Marian M. Nolt | Dundee, NY 14837 | Gas Operator | Dec 2024 |
| 20118 | Nolte, Mike E., Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2006 |
| 20119 | Nolteco, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2026 |
| 20120 | Nomeco Oil & Gas Co. | Jackson, MI 49204 | Oil & Gas Operator | Dec 1994 |
| 20121 | Nomoc Oil Company Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2006 |
| 20122 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 20123 | Nondorf Oil & Gas Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2008 |
| 20124 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Feb 2026 |
| 20125 | Noonday Exploration, LLC | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 20126 | Nooner Cynthia | Ratliff City, OK 73481 | Oil Operator | Oct 2025 |
| 20127 | Nor-Am Exploration | | Oil Operator | Jun 1981 |
| 20128 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 20129 | Nora Company | Pampa, TX 79065 | Oil & Gas Operator | Apr 2026 |
| 20130 | Noram Field Services Corp. | | Oil Operator | Apr 1999 |
| 20131 | Noram Operating Company | Houston, TX 77002 | Oil Operator | Oct 1999 |
| 20132 | Noramco Production, LLC | Midland, TX 79710 | Oil & Gas Operator | Jan 2023 |
| 20133 | Norbay Oil Corp. | | Oil & Gas Operator | Dec 1999 |
| 20134 | Norbert J Baumgart | Warren, PA 16365-3403 | Oil & Gas Operator | Dec 2009 |
| 20135 | Norcen Energy Inc | | Oil Operator | Dec 1989 |
| 20136 | Norcen Explorer, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 1998 |
| 20137 | Norco Development, Inc. | | Oil Operator | Jul 1994 |
| 20138 | Nordan & Company | San Antonio, TX 78205 | Oil & Gas Operator | Jun 2004 |
| 20139 | Nordan Oil & Gas Corporation | Abilene, TX 79604 | Oil & Gas Operator | Feb 2018 |
| 20140 | Nordan Trust, The | San Antonio, TX 78205 | Oil & Gas Operator | Nov 2003 |
| 20141 | Nordic Oil Company | | Oil & Gas Operator | Dec 1999 |
| 20142 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 20143 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Apr 2026 |
| 20144 | Nordstrand/Galoostian Oil & Gas | Houston, TX 77056 | Oil Operator | Mar 1998 |
| 20145 | Norexco Inc. | | Oil & Gas Operator | Aug 1988 |
| 20146 | Norgas Energy | Lakehills, TX 78063 | Oil & Gas Operator | Apr 2026 |
| 20147 | Norman Brothers Tank Truck Inc | Pauls Valley, OK 73075 | Oil & Gas Operator | May 2020 |
| 20148 | Norman Kenneth W | Sasakwa, OK 74867-0086 | Oil Operator | Oct 2017 |
| 20149 | Norman L & Loretta E Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 20150 | Norman L Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 20151 | Norman Oil Corporation | Abilene, TX 79608 | Oil & Gas Operator | Mar 2000 |
| 20152 | Norman Production Company | Chandler, OK 74834-8538 | Oil & Gas Operator | May 2015 |
| 20153 | Norman, C. D. | Irving, TX 75015 | Oil & Gas Operator | Mar 2008 |
| 20154 | Nornew Inc | Houston, TX 77063-2140 | Oil & Gas Operator | Dec 2008 |
| 20155 | Norris, Robert E. III | Savannah, NY 13146 | Gas Operator | Dec 2024 |
| 20156 | Norse Energy Corp USA | | Gas Operator | Dec 2011 |
| 20157 | Norstar Development | Madras, OR 97741 | Oil Operator | Nov 2018 |
| 20158 | Norstar Petroleu | | Oil & Gas Operator | Dec 1996 |
| 20159 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Dec 2025 |
| 20160 | Nortex Energy, Inc. | Muenster, TX 76252 | Oil Operator | Apr 2026 |
| 20161 | Nortex Gas & Oil Co | Tulsa, OK 74135 | Oil & Gas Operator | Sep 1993 |
| 20162 | Nortex Oil & Gas, Inc. | | Oil Operator | Feb 1994 |
| 20163 | Nortex Production Co., LLC | Wichita Falls, TX 76310 | Oil Operator | Apr 2026 |
| 20164 | North Amer Oil & Gas Drilling Co Inc | Pleasantville, PA 16341-0197 | Oil Operator | Dec 1999 |
| 20165 | North Amer Oil Exp Inc | Trenton, OH 45067 | Oil Operator | Dec 2024 |
| 20166 | North Amer Petroleum Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2000 |
| 20167 | North American D | | Oil & Gas Operator | Sep 1986 |
| 20168 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 20169 | North American Drilling Corp | Plano, TX 75093 | Oil & Gas Operator | Apr 2026 |
| 20170 | North American Energy Inc | Duncan, OK 73533-9604 | Oil & Gas Operator | Nov 2000 |
| 20171 | North American Exploration Co. | Abilene, TX 79602 | Oil & Gas Operator | Apr 1998 |
| 20172 | North American Operating, LLC | Ardmore, OK 73401 | Oil & Gas Operator | Feb 2026 |
| 20173 | North American Petroleum Inc | Scottsdale, AZ 85262 | Oil & Gas Operator | Dec 2025 |
| 20174 | North American Prod Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1998 |
| 20175 | North American Reserve Corp. | Houston, TX 77060 | Oil & Gas Operator | Oct 2010 |
| 20176 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 20177 | North American Royalties, Inc. | Chattanooga, TN 37408 | Oil & Gas Operator | Oct 2001 |
| 20178 | North American Technical Trading Company, Inc. | Oakbrook Terrace, IL 60181 | Oil Operator | Jan 2011 |
| 20179 | North Bound Exploration Co | Pauls Valley, OK 73075-0863 | Oil & Gas Operator | Jan 2018 |
| 20180 | North Cambria Fuel Co | Blairsville, PA 15717-7961 | Gas Operator | Dec 2008 |
| 20181 | North Canadian Production LLC | Okemah, OK 74859 | Oil & Gas Operator | Jan 2026 |
| 20182 | North Central Casing Pullers,Inc | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 20183 | North Central Oil Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 20184 | North Central Oil Corp., Et Al | | Oil & Gas Operator | Mar 1977 |
| 20185 | North Central Texas Energy LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 20186 | North Coast Petroleum Inc | Hiram, OH 44234 | Oil & Gas Operator | Dec 1993 |
| 20187 | North Country Energy LLC | Amarillo, TX 79159 | Oil & Gas Operator | Apr 2026 |
| 20188 | North East Fuel Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2015 |
| 20189 | North East Gas & Oil Co | Scottsville, VA 24590-3962 | Oil & Gas Operator | Dec 2013 |
| 20190 | North Finn LLC | Casper, WY 82605 | Oil & Gas Operator | Feb 2026 |
| 20191 | North Fork Operating LP | Mustang, OK 73064 | Oil & Gas Operator | Apr 2026 |
| 20192 | North Harmony Ventures, Inc. | Jamestown, NY 14701 | Oil & Gas Operator | Dec 2024 |
| 20193 | North John M | Valatie, NY 12184-5005 | Gas Operator | Dec 2014 |
| 20194 | North Lake Resources LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Apr 2026 |
| 20195 | North Lea Energy Co., LLC | Crossroads, NM 88114 | Oil & Gas Operator | Dec 2025 |
| 20196 | North Of River Sanitary District | | Oil & Gas Operator | Dec 2002 |
| 20197 | North Operating Company | Canton, TX 75103 | Oil & Gas Operator | Apr 2026 |
| 20198 | North Pacific Oil And Gas, Inc | Houston, TX 77042 | Oil Operator | Mar 2013 |
| 20199 | North Padre Explor. Venture LLC | Corpus Chrsti, TX 78473 | Oil & Gas Operator | May 2004 |
| 20200 | North Penn Gas Co | Allentown, PA 18101-1139 | Gas Operator | Dec 2000 |