| 1 | KOT | North | Callsign: Sever, | KZ | AVCODES |
| 2 | KOTA | KOTA SHIPPING CORP | | | SCAC3 |
| 3 | KOTA | KOTA SHIPPING CORP | | | SCAC4 |
| 4 | KOTC | KEEP ON TRUCKING COMPANY, INC | | | SCAC3 |
| 5 | KOTC | KOT | | | SCAC4 |
| 6 | KOTF | KOOTENAI TRANSFER & STORAGE | | | SCAC3 |
| 7 | KOTF | KOOTENAI STORAGE INC | | | SCAC4 |
| 8 | KOTI | K-O TRUCKING CO INC | | | SCAC3 |
| 9 | KOTK | KOTTKE TRUCKING | | | SCAC3 |
| 10 | KOTK | KEEP ON TRUCKING | | | SCAC4 |
| 11 | KOTM | KOOTENAY MACHINERY TRANSPORT INC | | | SCAC3 |
| 12 | KOTO | K O T INC | | | SCAC3 |
| 13 | KOTO | Takamatsu-Kotohira Electric Railroad Co., Ltd. (Kotoden) | | J | TRAFFIC |
| 14 | KOTQ | KEEP ON TRUCKING CO, THE | | | SCAC3 |
| 15 | KOTS | KOTAS TRANSFER | | | SCAC3 |
| 16 | KOTU | KOTLIN SHIPPING COMPANY | | RUS | BIC |
| 17 | KOTU | KING-OWN-TUBE/CONTINENTAL LEASING | | | SCAC3 |
| 18 | KOTU | KING-OWN-TUBE/CONTINENTAL LEASING | | | SCAC4 |
| 19 | KOTW | KOTTWITZ HAULING SERVICE | | | SCAC3 |
| 20 | KOTX | Anderson-Pritchard Oil Corp. | added 10/1953; eliminated 7/1954 | | NAKINA |
| 21 | KOTX | The Kanotex Refining Co. | 1/1941-1/1952; eliminated 10/1953 | | NAKINA |
| 22 | KOTX | Kanotex Refining Co. | 7/1937-4/1938 | | NAKINA |
| 23 | KOTX | The Kanotex Refining Co. | 4/38-1/52; eliminated 10/53 | | NRHS |
| 24 | KOTX | Anderson-Pritchard Oil Corp. | added 10/53 | | NRHS |
| 25 | KOTX | *ANDERSON-PRITCHARD OIL CORP. {KANOTEX REFINING CO.] | | | PWRC |
| 26 | KOTX | *KENTUCKY OHIO TRANSPORTATION CO. | | | PWRC |
