| Country | Calling Code | % Correct |
|---|---|---|
| United Kingdom | +44 | 81%
|
| Belgium | +32 | 63%
|
| Norway | +47 | 63%
|
| Netherlands | +31 | 56%
|
| France | +33 | 56%
|
| Sweden | +46 | 56%
|
| Germany | +49 | 56%
|
| Spain | +34 | 50%
|
| Croatia | +385 | 50%
|
| Denmark | +45 | 50%
|
| Serbia | +381 | 44%
|
| Bosnia and Herzegovina | +387 | 44%
|
| Czech Republic | +420 | 44%
|
| Austria | +43 | 44%
|
| Greece | +30 | 38%
|
| Albania | +355 | 38%
|
| Finland | +358 | 38%
|
| Bulgaria | +359 | 38%
|
| Ukraine | +380 | 38%
|
| Montenegro | +382 | 38%
|
| Kosovo | +383 | 38%
|
| Slovenia | +386 | 38%
|
| North Macedonia | +389 | 38%
|
| Italy | +39 | 38%
|
| Romania | +40 | 38%
|
| Switzerland | +41 | 38%
|
| Slovakia | +421 | 38%
|
| Ireland | +353 | 31%
|
| Lithuania | +370 | 31%
|
| Latvia | +371 | 31%
|
| Estonia | +372 | 31%
|
| Liechtenstein | +423 | 31%
|
| Poland | +48 | 31%
|
| Portugal | +351 | 25%
|
| Luxembourg | +352 | 25%
|
| Iceland | +354 | 25%
|
| Malta | +356 | 25%
|
| Cyprus | +357 | 25%
|
| Hungary | +36 | 25%
|
| Moldova | +373 | 25%
|
| Andorra | +376 | 25%
|
| Monaco | +377 | 25%
|
| San Marino | +378 | 25%
|
| Vatican City* | +379 | 25%
|