| 801 | Melrose Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2011 |
| 802 | Melvin Or Kathleen Turnbow | Portales, NM 88130 | Oil & Gas Operator | Mar 2006 |
| 803 | Memorial Production Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Aug 2026 |
| 804 | Mercury Exploration Co | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 805 | Merit Energy Company, LLC | Dallas, TX 75240 | Oil & Gas Operator | Apr 2026 |
| 806 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | Jun 2026 |
| 807 | Mesquite SWD Inc | Carlsbad, NM 88221 | Oil & Gas Operator | Aug 2026 |
| 808 | Meteor Developments Inc | Denver, CO BAD ADDR | Oil & Gas Operator | Dec 1995 |
| 809 | Mewbourne Oil Company | Tyler, TX 75711 | Oil & Gas Operator | Aug 2026 |
| 810 | MGM Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Aug 2026 |
| 811 | Michaelson Producing Company | MC Camey, TX 79752 | Oil & Gas Operator | Aug 2026 |
| 812 | Mid-Continent Energy Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2026 |
| 813 | Mid-Continent Energy, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2020 |
| 814 | Midland Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2026 |
| 815 | Milford Oil Co | Tatum, NM 88267 | Oil & Gas Operator | Feb 1995 |
| 816 | Miller Oil & Gas Assets III, LLC | Englewood, CO 80155 | Oil & Gas Operator | May 2012 |
| 817 | Miltex Oil Company | Boerne, TX 78006 | Oil & Gas Operator | Aug 2026 |
| 818 | Minel Inc | Richardson, TX 75080 | Oil & Gas Operator | Aug 2024 |
| 819 | Mineral Technologies, Inc. | Midland, TX 79704 | Oil & Gas Operator | Aug 2026 |
| 820 | Mirage Energy Inc | Eunice, NM 88231 | Oil & Gas Operator | Apr 2011 |
| 821 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 822 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | Jan 2026 |
| 823 | Mobil Producing Texas & New Mexico | Denver City, TX 79323 | Oil & Gas Operator | Jun 2005 |
| 824 | Momentum Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Aug 2026 |
| 825 | Momentum Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 826 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Aug 2026 |
| 827 | Moonshine Resources, LLC | Midland, TX 79707 | Oil & Gas Operator | Aug 2026 |
| 828 | Morexco Inc | Midland, TX 79710 | Oil & Gas Operator | Mar 2019 |
| 829 | Morgan Operating, Inc. | Hobbs, NM 88241 | Oil & Gas Operator | Oct 2024 |
| 830 | Moriah Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 831 | Morningstar Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2026 |
| 832 | Morningstar Partners, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2022 |
| 833 | Morris A Richardson Dba Fair VIew Production | Muldrow, OK 74948 | Oil Operator | Sep 2006 |
| 834 | Moss Petroleum Company | Dallas, TX 75207 | Oil & Gas Operator | Aug 2026 |
| 835 | Mountain States Petroleum Corp | Midland, TX 79702 | Oil & Gas Operator | Apr 2008 |
| 836 | Mr NM Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Jun 2026 |
| 837 | Mulloy Operating, Inc. | Midland, TX 79707 | Oil & Gas Operator | Aug 2026 |
| 838 | Murchison Oil And Gas, LLC | Dallas, TX 75229 | Oil & Gas Operator | Feb 2025 |
| 839 | Murphy Operating Corp | Roswell, NM 88202 | Oil & Gas Operator | Apr 1998 |
| 840 | Mustang Resources LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2026 |
| 841 | MWJ Producing Company | Midland, TX 79701 | Oil & Gas Operator | Jul 1998 |
| 842 | MWS Producing, Inc. | Stanton, TX 79782 | Oil & Gas Operator | Aug 2026 |
| 843 | Myco Petroleum | Lovington, NM 88260 | Oil & Gas Operator | Aug 2026 |
| 844 | N Dale Nichols | Midland, TX 79703 | Oil & Gas Operator | Jun 2004 |
| 845 | Nacogdoches Oil & Gas Inc | Nacogdoches, TX 75963 | Oil & Gas Operator | Aug 2026 |
| 846 | Nadel And Gussman Heyco, LLC | Roswell, NM 88202 | Oil & Gas Operator | Dec 2014 |
| 847 | Nadel And Gussman LLC | Tulsa, OK 74119 | Oil & Gas Operator | Aug 2026 |
| 848 | Nadel And Gussman Permian,L.L.C. | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2026 |
| 849 | Nadel And Gussman Rockies, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2012 |
| 850 | Nancy Wilcox E Qualls | Farmington, NM 87410 | Gas Operator | May 2017 |
| 851 | Nassau Resources Inc | Denver, CO 80222 | Oil & Gas Operator | Mar 2000 |
| 852 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 853 | Naumann Oil & Gas, Inc. | Austin, TX 78716 | Oil & Gas Operator | Aug 2026 |
| 854 | Navajo Nation Oil & Gas Co | Window Rock, AZ 86511 | Oil & Gas Operator | Oct 2012 |
| 855 | NBL Permian LLC | Houston, TX 77070 | Oil & Gas Operator | Aug 2018 |
| 856 | Nearburg Producing Company | Dallas, TX 75380 | Oil & Gas Operator | Aug 2026 |
| 857 | Nerdlihc Company Inc. | Long Beach, CA 90815 | Oil & Gas Operator | Nov 2006 |
| 858 | New Horizon Exploration, Inc. | Richardson, TX 75081 | Oil & Gas Operator | Jun 2006 |
| 859 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Aug 2026 |
| 860 | New Tex Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | May 2016 |
| 861 | Newfield Exploration Mid-Continent, Inc | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2011 |
| 862 | Nextgen Petroleum LLC | Lubbock, TX 79407 | Oil Operator | Jun 2026 |
| 863 | NGX Company | Roswell, NM 88202 | Oil & Gas Operator | Jul 2008 |
| 864 | Nitro Oil & Gas, LLC | Cuero, TX 77954 | Oil & Gas Operator | Aug 2026 |
| 865 | NM&O Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 866 | NMR Energy LLC | Houston, TX 77063 | Oil & Gas Operator | Aug 2026 |
| 867 | Nnogc Exploration & Production, LLC | Window Rock, AZ 86515 | Oil & Gas Operator | Jul 2026 |
| 868 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Aug 2026 |
| 869 | Noble Operating, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Sep 2013 |
| 870 | Nordstrand Engineering Inc | Houston, TX 77019 | Oil & Gas Operator | Aug 2026 |
| 871 | Norman L & Loretta E Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 872 | Norman L Gilbreath | Aztec, NM 87401 | Gas Operator | Aug 2018 |
| 873 | North Fork Operating LP | Mustang, OK 73064 | Oil & Gas Operator | Aug 2026 |
| 874 | North Lea Energy Co., LLC | Crossroads, NM 88114 | Oil & Gas Operator | Dec 2025 |
| 875 | Northern Pacific Oil And Gas Incorporated | Houston, TX 77024 | Oil & Gas Operator | Dec 2022 |
| 876 | Northland Operating Company | Dallas, TX 75240 | Oil & Gas Operator | Apr 2003 |
| 877 | Northport Production Company | Oklahoma City, OK 73113 | Oil & Gas Operator | May 2026 |
| 878 | Northstar Oil & Gas | Sewickley, PA 151430168 | Oil & Gas Operator | May 2005 |
| 879 | Northstar Operating Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 880 | Northwest Pipeline Company | Salt Lake City, UT 841580900 | Oil & Gas Operator | Feb 1995 |
| 881 | Norwood Oil Corp | Malakoff, TX 75148 | Oil & Gas Operator | Oct 1995 |
| 882 | Novo II Operating, LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | May 2026 |
| 883 | Novo Oil & Gas Northern Delaware, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2026 |
| 884 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Jul 2026 |
| 885 | NSP Resources, LLC | Houston, TX 77018 | Oil & Gas Operator | Jun 2026 |
| 886 | Nuevida Resources, LLC | Dallas, TX 75235 | Gas Operator | May 2026 |
| 887 | Nuroc Energy Incorporated | Andrews, TX 79714 | Oil Operator | Jun 2026 |
| 888 | O H Berry | Midland, TX 79702 | Oil & Gas Operator | Feb 2003 |
| 889 | O'Neil Properties LTD | Midland, TX 79702 | Oil & Gas Operator | Jun 2015 |
| 890 | O. H. B. Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Sep 2019 |
| 891 | Occidental Permian LTD. | Houston, TX 77046 | Oil & Gas Operator | Aug 2026 |
| 892 | Ocean Energy Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 893 | Ogs Operating Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2008 |
| 894 | Ogx Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2026 |
| 895 | Oil & Gas Operations | Midland, TX 79706 | Oil & Gas Operator | Aug 2026 |
| 896 | Ok Operating Co | Midland, TX 79702 | Oil & Gas Operator | Aug 1999 |
| 897 | Okie Crude Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2026 |
| 898 | Okie Operating Company, LTD. | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2026 |
| 899 | Oleum Energy LLC | Georgetown, TX 78628 | Oil & Gas Operator | Apr 2026 |
| 900 | Olsen Energy Inc. | Boerne, TX 78006 | Oil & Gas Operator | Aug 2026 |