| 1 | DUP | Double | | | TRAFFIC |
| 2 | DUPE | DUPEE TRUCKING LLC | | | SCAC4 |
| 3 | DUPF | DUPUY STORAGE & FORWARDING LLC | | | SCAC4 |
| 4 | DUPI | DUPREYS FEED | | | SCAC4 |
| 5 | DUPN | DUPRE LOGISTICS LLC (CONTRACT DIVIS | | | SCAC4 |
| 6 | DUPO | DUPONT MOTOR LINES INC | | | SCAC4 |
| 7 | DUPR | DUPRE LOGISTICS LLC | | | SCAC4 |
| 8 | DUPX | E.I. du Pont de Nemours & Co., Inc. | 7/1935-7/2005 | | NAKINA |
| 9 | DUPX | E.I. du Pont de Nemours & Co. | 7/1923-7/1932 | | NAKINA |
| 10 | DUPX | E.I. du Pont de Nemours & Co., Inc. | 4/38-7/2000 | | NRHS |
| 11 | DUPX | E. I. DUPONT DE NEMOURS & CO.INC. | | | PWRC |
| 12 | DUPX | DuPont | | | RSRV |
| 13 | DUPX | E.I. du Pont de Nemours & Co., Inc. | | USA | TRAFFIC |
| 14 | DUPZ | DUKE ENERGY [DUKE POWER CO.] | | | PWRC |
