| 1 | ASX | Air Special | Callsign: Airspec, | CZ | AVCODES |
| 2 | ASX | Air Special | | | ICAO1 |
| 3 | ASX | American Smelting & Refining Co. | 7/1935-7/1965; eliminated 4/1966 | | NAKINA |
| 4 | ASX | American Smelting & Refining Co. | 4/38-7/65; eliminated 4/66 | | NRHS |
| 5 | ASX | AMERICAN SMELTING & REFINING CO. (ELIMINATED 4/1966) | | | PWRC |
| 6 | ASXA | ALL-STATE EXPRESS INC | | | SCAC4 |
| 7 | ASXC | AMS EXPRESS CORP | | | SCAC4 |
| 8 | ASXE | ASH, D EXPRESS | | | SCAC3 |
| 9 | ASXF | ALL STAR EXPRESS INC | | | SCAC4 |
| 10 | ASXI | AIR SEA EXPRESS INC. | | | SCAC3 |
| 11 | ASXJ | ABLS TRANSPORT | | | SCAC4 |
| 12 | ASXK | A S A P TRANS INC | | | SCAC4 |
| 13 | ASXO | A S EXPRESS | | | SCAC4 |
| 14 | ASXP | A S A P EXPRESS | | | SCAC4 |
| 15 | ASXQ | ASSOCIATED TRANSPORT INC | | | SCAC4 |
| 16 | ASXR | ALL STATES XPRESS INC | | | SCAC3 |
| 17 | ASXT | ASAP EXPEDITING INC | | | SCAC4 |
| 18 | ASXV | AIR SURFACE EXPRESS TAMPA LLC | | | SCAC4 |
| 19 | ASXW | AGS TRANSPORT LLC | | | SCAC4 |
