| Number | Prefix | Country | Continent | Callsign |
| 1 | A1 | Abu Ail & Jabal at Tair | AS | A15AA |
| 2 | DM | German Dem. Rep. | EU | DM2AUF |
| 3 | KH5K | Kingman Reef | OC | N9NS/KH5K |
| 4 | OK/D | Czechoslovakia | EU | OK1ASQ |
| 5 | PJ2/D | Netherland Antilles | SA | PJ9X |
| 6 | PJ7/D | Saint Maarten & Saba | NA | K4PI/PJ7 |
| 7 | R1M | Malyj Vysotskij Island | EU | R1MVA |
| 8 | ST0/D | Southern Sudan | AF | ST0RK |
| 9 | ZS0 | Penguin Islands | AF | DL8CM/ZS1 |
| 10 | ZS9 | Walvis Bay | AF | ZS1IS |
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