| 1 | UCLD | UNVIERSAL CARLOADING & DISTRIBUTING CO | | | PWRC |
| 2 | UCLD | US CARGO LINK LLC | | | SCAC4 |
| 3 | UCLI | UNITCARGO CONTAINER LINE INC | | | SCAC4 |
| 4 | UCLL | UNITED COASTAL LOGISTICS LTD | | | SCAC4 |
| 5 | UCLQ | UNITED COMMODITIES LOGISTICS LLC | | | SCAC4 |
| 6 | UCLR | UNITED CARTAGE LLC | | | SCAC4 |
| 7 | UCLS | UNIVERSAL CARRIERS LLC | | | SCAC4 |
| 8 | UCLSK | UniCredit Leasing Slovakia, a.s. | | SK | VKM |
| 9 | UCLU | UNICORN LINES (PTY) LTD. | | | PWRC |
| 10 | UCLU | Unicorn Lines | | | RSRV |
| 11 | UCLU | UNICORN LINES (PTY) LTD | | | SCAC4 |
| 12 | UCLX | Union Chemical Carline, Inc. | added 7/1956; 10/1957-4/1970; eliminated 11/1973 | | NAKINA |
| 13 | UCLX | Vulcan Materials Co., Chemicals Division | added 11/1973; 1/1975-7/2005; eliminated 10/2005 | | NAKINA |
| 14 | UCLX | Basic Chemicals Co., LLC | added 1/2006; eliminated 4/2007 | | NAKINA |
| 15 | UCLX | Occidental Chemicals Corp. | added 4/2007 | | NAKINA |
| 16 | UCLX | Union Chemical Carline, Inc. | added 7/56; 10/57-4/70 | | NRHS |
| 17 | UCLX | Vulcan Materials Co., Chemicals Division | 1/75-7/2000 | | NRHS |
| 18 | UCLX | OCCIDENTAL CHEMICALS CORP. [BASIC CHEMICALS CO., LLC; VULCAN MATERIALS CO. CHEMICALS DIV.; UNION CHEMICAL CARLINE, INC.] | | | PWRC |
| 19 | UCLX | Vulcan Minerals | | | RSRV |
| 20 | UCLX | BASIC CHEMICALS COMPANY LLC | | | SCAC4 |
