| 1 | DAX | Aalborg Airtaxi ApS | Callsign: Dantax, | DK | AVCODES |
| 2 | DAX | Occidental Chemical Corp. | added 1/1992; 1/1994-7/2005 | | NAKINA |
| 3 | DAX | Occidental Chemical Corp., Electrochemicals & Specialty Products | added 10/1989; eliminated 1/1992 | | NAKINA |
| 4 | DAX | Occidental Chemical Corp., Electrochemicals, Detergents & Specialty Products | added 1/1988; eliminated 10/1989 | | NAKINA |
| 5 | DAX | Occidental Chemical Corp., Electrochemicals, Detergents & Specialty Products Group | added 7/1987; eliminated 1/1988 | | NAKINA |
| 6 | DAX | Diamond Shamrock Chemicals Co. | added 1/1984; eliminated 7/1987 | | NAKINA |
| 7 | DAX | Diamond Shamrock Corp. | added 4/1968; 4/1970-1/1980; eliminated 1/1984 | | NAKINA |
| 8 | DAX | Diamond Alkali Co. | 7/1930-10/1966; eliminated 4/1968 | | NAKINA |
| 9 | DAX | Diamond Alkali Co. | 4/38-10/66; eliminated 4/68 | | NRHS |
| 10 | DAX | Diamond Shamrock Corp. | added 4/68; 4/70-1/80 | | NRHS |
| 11 | DAX | Diamond Shamrock Chemicals Co. | eliminated 7/87 | | NRHS |
| 12 | DAX | Occidental Chemical Corp., Electrochemicals, Detergents & Specialty Products Group | added 7/87; eliminated 1/88 | | NRHS |
| 13 | DAX | Occidental Chemical Corp., Electrochemicals, Detergents & Specialty Products | added 1/88; eliminated 10/89 | | NRHS |
| 14 | DAX | Occidental Chemical Corp., Electrochemicals & Specialty Products | added 10/89; eliminated 1/92 | | NRHS |
| 15 | DAX | Occidental Chemical Corp. | added 1/92; 1/94-7/2000 | | NRHS |
| 16 | DAX | *DIAMOND SHAMROCK CHEMICALS CO. [DIAMOND ALKALI CO.] | | | PWRC |
| 17 | DAX | +OCCIDENTAL CHEMICAL CORP., ELECTROCHEMICALS & SPECIALTY PRODUCTS | | | PWRC |
| 18 | DAX | Diamond Shamrock Chemicals (Occidental Chemical Corporation) | | | RSRV |
| 19 | DAX | OCCIDENTAL CHEMICAL CORPORATION | | | SCAC4 |
| 20 | DAXI | DAXI SA | | RO | VKM |
| 21 | DAXL | DEFINED AIR XPRESS LLC | | | SCAC4 |
| 22 | DAXT | DAX TRUCKING | | | SCAC4 |
| 23 | DAXU | NAVIERA DIRECT AFRICA LINE S.A | | E | BIC |
