| Carrier Code | Carrier Name |
| 31XM | HOSEI KISEN CO.,LTD |
| 31XN | GREEN KAIJI KAISHA,LTD. |
| 31XO | SANYO KAIJI CO.,LTD |
| 31XP | DR TANKER CO., LTD. |
| 31XQ | YANAI CO., LTD. |
| 31XR | YUN'S MARINE CO.,LTD. |
| 31XS | MEIWA MARINE CO., LTD. |
| 31XT | SHIDA SENPAKU KOGYO CO.,LTD |
| 31XU | SHANDONG JINGHAI IND. GROUP CO.,LTD. |
| 31XV | MIK CORPORATION. |
| 31XW | KAWANA KAIUN CO.,LTD. |
| 31XX | KEY MARINE CO., LTD. |
| 31XY | STAR CRUISES PTE LTD. |
| 31XZ | MR MANAGEMENT K/S |
| 31YA | TOKYO METROPOLITAN OSHIMA KAIYO-KOKUSAI HIGH SCHOOL |
