| 20901 | Nomeco Oil & Gas Co. | Jackson, MI 49204 | Oil & Gas Operator | Dec 1994 |
| 20902 | Nomoc Oil Company Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2006 |
| 20903 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 20904 | Nondorf Oil & Gas Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2008 |
| 20905 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Feb 2025 |
| 20906 | Noonday Exploration, LLC | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 20907 | Nooner Cynthia | Ratliff City, OK 73481 | Oil Operator | Jan 2025 |
| 20908 | Nor-Am Exploration | | Oil Operator | Jun 1981 |
| 20909 | Nor-West Kansas Oil, L.L.C. | Wakeeney, KS 67672 | Oil Operator | Dec 2019 |
| 20910 | Nora Company | Pampa, TX 79065 | Oil & Gas Operator | Apr 2025 |
| 20911 | Noram Field Services Corp. | | Oil Operator | Apr 1999 |
| 20912 | Noram Operating Company | Houston, TX 77002 | Oil Operator | Oct 1999 |
| 20913 | Noramco Production, LLC | Midland, TX 79710 | Oil & Gas Operator | Jan 2023 |
| 20914 | Norbay Oil Corp. | | Oil & Gas Operator | Dec 1999 |
| 20915 | Norbert J Baumgart | Warren, PA 16365-3403 | Oil & Gas Operator | Dec 2009 |
| 20916 | Norcen Energy Inc | | Oil Operator | Dec 1989 |
| 20917 | Norcen Explorer, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 1998 |
| 20918 | Norco Development, Inc. | | Oil Operator | Jul 1994 |
| 20919 | Nordan & Company | San Antonio, TX 78205 | Oil & Gas Operator | Jun 2004 |
| 20920 | Nordan Oil & Gas Corporation | Abilene, TX 79604 | Oil & Gas Operator | Feb 2018 |
| 20921 | Nordan Trust, The | San Antonio, TX 78205 | Oil & Gas Operator | Nov 2003 |
| 20922 | Nordic Oil Company | | Oil & Gas Operator | Dec 1999 |
| 20923 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 20924 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Apr 2025 |
| 20925 | Nordstrand/Galoostian Oil & Gas | Houston, TX 77056 | Oil Operator | Mar 1998 |
| 20926 | Norexco Inc. | | Oil & Gas Operator | Aug 1988 |
| 20927 | Norgas Energy | Lakehills, TX 78063 | Oil & Gas Operator | Apr 2025 |
| 20928 | Norman Brothers Tank Truck Inc | Pauls Valley, OK 73075 | Oil & Gas Operator | May 2020 |
| 20929 | Norman Kenneth W | Sasakwa, OK 74867-0086 | Oil Operator | Oct 2017 |
| 20930 | Norman L & Loretta E Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 20931 | Norman L Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 20932 | Norman Oil Corporation | Abilene, TX 79608 | Oil & Gas Operator | Mar 2000 |
| 20933 | Norman Production Company | Chandler, OK 74834-8538 | Oil & Gas Operator | May 2015 |
| 20934 | Norman, C. D. | Irving, TX 75015 | Oil & Gas Operator | Mar 2008 |
| 20935 | Nornew Inc | Houston, TX 77063-2140 | Oil & Gas Operator | Dec 2008 |
| 20936 | Norris, Robert E. III | Savannah, NY 13146 | Gas Operator | Dec 2023 |
| 20937 | Norse Energy Corp USA | | Gas Operator | Dec 2011 |
| 20938 | Norstar Development | Madras, OR 97741 | Oil Operator | Nov 2018 |
| 20939 | Norstar Petroleu | | Oil & Gas Operator | Dec 1996 |
| 20940 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Dec 2024 |
| 20941 | Nortex Energy, Inc. | Muenster, TX 76252 | Oil Operator | Apr 2025 |
| 20942 | Nortex Gas & Oil Co | Tulsa, OK 74135 | Oil & Gas Operator | Sep 1993 |
| 20943 | Nortex Oil & Gas, Inc. | | Oil Operator | Feb 1994 |
| 20944 | Nortex Production Co., LLC | Wichita Falls, TX 76310 | Oil Operator | Apr 2025 |
| 20945 | North Amer Oil & Gas Drilling Co Inc | Pleasantville, PA 16341-0197 | Oil Operator | Dec 1999 |
| 20946 | North Amer Oil Exp Inc | Trenton, OH 45067 | Oil Operator | Dec 2023 |
| 20947 | North Amer Petroleum Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2000 |
| 20948 | North American D | | Oil & Gas Operator | Sep 1986 |
| 20949 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 20950 | North American Drilling Corp | Plano, TX 75093 | Oil & Gas Operator | Apr 2025 |
| 20951 | North American Energy | | Oil & Gas Operator | Feb 1986 |
| 20952 | North American Energy Inc | Duncan, OK 73533-9604 | Oil & Gas Operator | Nov 2000 |
| 20953 | North American Exploration Co. | Abilene, TX 79602 | Oil & Gas Operator | Apr 1998 |
| 20954 | North American Petroleum Inc | Scottsdale, AZ 85262 | Oil & Gas Operator | Dec 2024 |
| 20955 | North American Prod Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1998 |
| 20956 | North American Reserve Corp. | Houston, TX 77060 | Oil & Gas Operator | Oct 2010 |
| 20957 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 20958 | North American Royalties, Inc. | Chattanooga, TN 37408 | Oil & Gas Operator | Oct 2001 |
| 20959 | North American Technical Trading Company, Inc. | Oakbrook Terrace, IL 60181 | Oil Operator | Jan 2011 |
| 20960 | North Bound Exploration Co | Pauls Valley, OK 73075-0863 | Oil & Gas Operator | Jan 2018 |
| 20961 | North Cambria Fuel Co | Blairsville, PA 15717-7961 | Gas Operator | Dec 2008 |
| 20962 | North Central Casing Pullers,Inc | Graham, TX 76450 | Oil & Gas Operator | Aug 2003 |
| 20963 | North Central Drilling Co Inc | Mannford, OK 74044 | Oil & Gas Operator | May 2013 |
| 20964 | North Central Oil Corp. | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 20965 | North Central Oil Corp., Et Al | | Oil & Gas Operator | Mar 1977 |
| 20966 | North Central Texas Energy LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 20967 | North Coast Petroleum Inc | Hiram, OH 44234 | Oil & Gas Operator | Dec 1993 |
| 20968 | North Country Energy LLC | Amarillo, TX 79159 | Oil & Gas Operator | Apr 2025 |
| 20969 | North East Fuel Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2015 |
| 20970 | North East Gas & Oil Co | Scottsville, VA 24590-3962 | Oil & Gas Operator | Dec 2013 |
| 20971 | North Finn LLC | Casper, WY 82605 | Oil & Gas Operator | Mar 2025 |
| 20972 | North Fork Operating LP | Mustang, OK 73064 | Oil & Gas Operator | Apr 2025 |
| 20973 | North Harmony Ventures, Inc. | Jamestown, NY 14701 | Oil & Gas Operator | Dec 2023 |
| 20974 | North John M | Valatie, NY 12184-5005 | Gas Operator | Dec 2014 |
| 20975 | North Lake Resources LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Apr 2025 |
| 20976 | North Lea Energy Co., LLC | Crossroads, NM 88114 | Oil & Gas Operator | Dec 2024 |
| 20977 | North Of River Sanitary District | | Oil & Gas Operator | Dec 2002 |
| 20978 | North Operating Company | Canton, TX 75103 | Oil & Gas Operator | Apr 2025 |
| 20979 | North Pacific Oil And Gas, Inc | Houston, TX 77042 | Oil Operator | Mar 2013 |
| 20980 | North Padre Explor. Venture LLC | Corpus Chrsti, TX 78473 | Oil & Gas Operator | May 2004 |
| 20981 | North Penn Gas Co | Allentown, PA 18101-1139 | Gas Operator | Dec 2000 |
| 20982 | North Plains Corp | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2024 |
| 20983 | North Plains Energy, LLC | | Oil & Gas Operator | Jan 2016 |
| 20984 | North Plains Oil | | Oil Operator | Jul 1990 |
| 20985 | North Range Resources, LLC | | Oil & Gas Operator | Nov 2023 |
| 20986 | North Ridge Corporation | Duncanville, TX 75137 | Oil & Gas Operator | Apr 2025 |
| 20987 | North Ridge Energy Inc | Rome, OH 44085-9713-9713 | Oil & Gas Operator | Dec 2024 |
| 20988 | North Shore Energy, L.L.C. | Austin, TX 78750 | Oil & Gas Operator | Apr 2025 |
| 20989 | North Shore Exploration & Production, LLC | Broomfield, CO 80021 | Oil & Gas Operator | Feb 2025 |
| 20990 | North Silo Resources LLC | Houston, TX 77055 | Oil & Gas Operator | Feb 2025 |
| 20991 | North Slope Borough | | Gas Operator | Mar 2025 |
| 20992 | North South Oil, LLC | Luling, TX 78648 | Oil Operator | Apr 2025 |
| 20993 | North Star Energy Resources LLC | Waynesburg, PA 15370-3833 | Gas Operator | Dec 2024 |
| 20994 | North Star Energy, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Jan 2010 |
| 20995 | North Star Exploration Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2024 |
| 20996 | North Star Petroleum Corp. | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1993 |
| 20997 | North Texas Energy,Inc. | Dallas, TX 75252 | Oil Operator | Apr 2025 |
| 20998 | North Texas Engineering | Midland, TX 79710 | Oil & Gas Operator | Nov 2002 |
| 20999 | North Texas Llano Operating Corp | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 21000 | North Texas Oil & Gas, LLC | Edmond, OK 73013 | Oil & Gas Operator | Apr 2025 |