| 1 | HWCA | HWC TRANSPORTATION LLC | | | SCAC4 |
| 2 | HWCC | HOWL TRANSPORTATION LLC | | | SCAC4 |
| 3 | HWCG | HAWAII CARGO SERVICES INC | | | SCAC4 |
| 4 | HWCI | HANDLE WITH CARE INC | | | SCAC4 |
| 5 | HWCN | H & W CONTRACT CARRIERS INC | | | SCAC4 |
| 6 | HWCQ | HODGES WAREHOUSE, Port City Properties, INC | | | SCAC1 |
| 7 | HWCQ | HODGES WAREHOUSE | | | SCAC4 |
| 8 | HWCR | HALLIBURTON CO | | | PWRC |
| 9 | HWCR | HOLLOWAY COURIER SERVICES LTD | | | SCAC4 |
| 10 | HWCT | HIWAY COURIER AND TRUCKING | | | SCAC4 |
| 11 | HWCX | Halliburton Energy Services, Inc. | added 4/2004; 7/2005 | | NAKINA |
| 12 | HWCX | Halliburton Co. | added 10/1960; 4/1961-7/2000; eliminated 4/2004 | | NAKINA |
| 13 | HWCX | Halliburton Oil Well Cementing Co. | 1/1946-10/1957; eliminated 10/1960 | | NAKINA |
| 14 | HWCX | Halliburton Co. | added 10/60; 4/61-7/2000 | | NRHS |
| 15 | HWCX | Halliburton Oil Well Cementing Co. | 1/52-10/57; eliminated 10/60 | | NRHS |
| 16 | HWCX | HALLIBURTON ENERGY SERVICES CO. {HALLIBURTON OIL WELL CEMENTING CO.] | | | PWRC |
| 17 | HWCX | Halliburton | | | RSRV |
| 18 | HWCX | HALLIBURTON ENERGY SERVICES INC | | | SCAC4 |
| 19 | HWCX | Halliburton Co. | | USA | TRAFFIC |
| 20 | HWCY | HANDLE WITH CARE MOVING SYSTEMS LTD | | | SCAC4 |
