| Prefix | Country | % Correct |
|---|---|---|
| F | France | 75%
|
| I | Italy | 75%
|
| N | USA | 75%
|
| DL | Germany | 71%
|
| B | China | 67%
|
| VA | Canada | 63%
|
| EA | Spain | 63%
|
| EI | Ireland | 58%
|
| JA | Japan | 58%
|
| R | Russia | 54%
|
| M | UK | 54%
|
| VK | Australia | 50%
|
| HA | Hungary | 50%
|
| LA | Norway | 50%
|
| OE | Austria | 46%
|
| CT | Portugal | 42%
|
| LZ | Bulgaria | 38%
|
| 9A | Croatia | 38%
|
| TF | Iceland | 38%
|
| YB | Indonesia | 38%
|
| 4X | Israel | 38%
|
| A6 | United Arab Emirates | 38%
|
| ET | Ethiopia | 33%
|
| HS | Thailand | 33%
|
| VU | India | 29%
|
| CN | Morocco | 29%
|
| PY | Brazil | 25%
|
| XE | Mexico | 25%
|
| AP | Pakistan | 25%
|
| HZ | Saudi-Arabia | 25%
|
| CO | Cuba | 21%
|
| EP | Iran | 21%
|
| HP | Panama | 21%
|
| YV | Venezuela | 21%
|
| HH | Haiti | 17%
|
| OA | Peru | 17%
|
| CA | Chile | 13%
|
| 5B | Cyprus | 13%
|
| UN | Kazakhstan | 13%
|
| XW | Laos | 13%
|
| V5 | Namibia | 13%
|
| 7X | Algeria | 8%
|
| TY | Benin | 8%
|
| HC | Ecuador | 8%
|
| E3 | Eritrea | 8%
|
| 4L | Georgia | 8%
|
| 5A | Libya | 8%
|
| J6 | St Lucia | 8%
|
| ST | Sudan | 8%
|
| 3V | Tunisia | 8%
|
| 8P | Barbados | 4%
|
| 6W | Senegal | 4%
|
| 9Z | Trinidad and Tobago | 4%
|