| Number | Prefix | Country | Continent |
| 1 | 3Y/B | Bouvet | AF |
| 2 | 3Y/P | Peter I | AN |
| 3 | 4U/UN | United Nations Headquarters | NA |
| 4 | 4W | East Timor | OC |
| 5 | 7O | Yemen | AS |
| 6 | BS7H | Scarborough Reef | AS |
| 7 | BV9P | Pratas Island | AS |
| 8 | CY0 | Sable Island | NA |
| 9 | FR/G | Glorioso Island | AF |
| 10 | FT5W | Crozet | AF |
| 11 | FT5X | Kerguelen Island | AF |
| 12 | HK0/M | Malpelo Island | SA |
| 13 | HV | Vatican | EU |
| 14 | JD1/M | Minami Torishima | OC |
| 15 | JX | Jan Mayen | EU |
| 16 | KH3 | Johnston Island | OC |
| 17 | KH4 | Midway Island | OC |
| 18 | KP5 | Desecheo Island | NA |
| 19 | P5 | North Korea | AS |
| 20 | R1F | Franz Josef Land | EU |
| 21 | TI9 | Cocos Island | NA |
| 22 | VK0/M | Macquarie Island | OC |
| 23 | XF4 | Revilla Gigedo | NA |
| 24 | YK | Syria | AS |
| 25 | YV0 | Aves Island | NA |
| 26 | ZL8 | Kermadec Island | OC |
| 27 | ZS8 | Prince Edward & Marion | AF |
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