| Country | Calling Code | % Correct |
|---|---|---|
| United States of America | +1 | 95%
|
| United Kingdom | +44 | 88%
|
| France | +33 | 84%
|
| Russia | +7 | 84%
|
| Spain | +34 | 81%
|
| Netherlands | +31 | 80%
|
| Belgium | +32 | 79%
|
| Austria | +43 | 79%
|
| Italy | +39 | 77%
|
| Norway | +47 | 77%
|
| Sweden | +46 | 76%
|
| Australia | +61 | 74%
|
| Argentina | +54 | 72%
|
| Brazil | +55 | 72%
|
| New Zealand | +64 | 72%
|
| Greece | +30 | 71%
|
| Mexico | +52 | 71%
|
| India | +91 | 71%
|
| Singapore | +65 | 70%
|
| Thailand | +66 | 70%
|
| Venezuela | +58 | 68%
|
| South Korea | +82 | 68%
|
| Malaysia | +60 | 66%
|
| Burma | +95 | 59%
|
| Ireland | +353 | 27%
|
| Luxembourg | +352 | 19%
|
| China | +886 | 10%
|
| Mongolia | +976 | 8%
|
| Nepal | +977 | 8%
|
| Fiji | +679 | 7%
|