| National Oak Distributors FL | Wholesale Trade | 0 | — | A |
| National Oak Distributors GA | Wholesale Trade | 0 | — | A |
| National Oak Distributors IL | Wholesale Trade | 0 | — | F |
| National Oak Distributors MI | Wholesale Trade | 0 | — | A |
| National Oak Distributors MO | Wholesale Trade | 0 | — | A |
| National Oak Distributors NC | Wholesale Trade | 0 | — | A |
| National Oak Distributors NJ | Wholesale Trade | 0 | — | A |
| National Oak Distributors OH | Wholesale Trade | 0 | — | A |
| National Oak Distributors OK | Wholesale Trade | 0 | — | A |
| National Oak Distributors TN | Wholesale Trade | 0 | — | A |
| National Oak Distributors TX | Wholesale Trade | 0 | — | A |
| National Oak Distributors WA | Wholesale Trade | 0 | — | A |
| National Oak Distributors WI | Wholesale Trade | 0 | — | F |
| National Office Services OH | Manufacturing | 0 | — | A |
| National Oilwell - Pampa TX | — | 0 | — | — |
| National Oilwell Varco AL | Manufacturing | 0 | — | F |
| National Oilwell Varco CA | Manufacturing | 0 | — | A |
| National Oilwell Varco LA | Manufacturing | 0 | — | A |
| National Oilwell Varco OH | — | 0 | — | — |
| National Oilwell Varco OK | Mining & Extraction | 0 | — | F |
| National Oilwell Varco PA | Manufacturing | 0 | — | F |
| National Oilwell Varco WV | Mining & Extraction | 0 | — | A |
| National Oilwell Varco - Enerflow OK | — | 0 | — | — |
| National Oilwell Varco - Rolligon TX | Manufacturing | 0 | — | F |
| National Oilwell Varco - SHP Facility TX | — | 0 | — | — |
| National Oilwell Varco -Galena Park TX | — | 0 | — | — |
| National Oilwell Varco, L.P. TX | Manufacturing | 10 | $154,223 | C |
| National Oilwell Varco- Oscar Nelson Jr. Dr. TX | — | 0 | — | — |
| National Oilwell Varco-Air Center Blvd. TX | — | 0 | — | — |
| National Oilwell Varco-Fiberglass Systems TX | — | 0 | — | — |
| National Oilwell Varco-Lockwood Dr. TX | — | 0 | — | — |
| NATIONAL OILWELL VARCO-PFT LA | Manufacturing | 0 | — | A |
| NATIONAL OILWELL VARCO-PFT OK | Manufacturing | 0 | — | C |
| NATIONAL OILWELL VARCO-PFT TX | Manufacturing | 0 | — | C |
| National Oilwell Varco-San Angelo2 TX | — | 0 | — | — |
| National Oilwell Varco-Willis TX | — | 0 | — | — |
| NATIONAL OnDemand, Inc. NC | Construction | 0 | — | F |
| NATIONAL PACKAGING COMPANY, INC. AL | Manufacturing | 0 | — | F |
| National Packaging Services, Inc. NJ | Administrative & Waste Services | 0 | — | B |
| National Painting Contractors (MBE) LLC MI | Construction | 0 | — | A |
| National Pancreas Foundation MD | Other Services | 0 | — | A |
| National Park College - Hot Springs National, AR AR | Educational Services | 1 | $60,680 | — |
| National Partitions TN | Manufacturing | 0 | — | F |
| National Pavement Partners, LLC CO | Construction | 0 | — | A |
| National Paving Company, Inc. CA | Construction | 0 | — | F |
| National Pen TN | — | 0 | — | — |
| National Penn Bank 3rd Fed Bank PA | — | 0 | — | — |
| National Planning Holdings CO | — | 0 | — | — |
| National Planning Holdings, Inc. CA | — | 0 | — | — |
| National Plant Services Carylon Corp CA | Administrative & Waste Services | 0 | — | A |