These are the country codes in Zone 3.
- +30 – Greece
- +31 – Netherlands
- +32 – Belgium
- +33 – France
- +34 – Spain
- +350 – Gibraltar
- +351 – Portugal
- +352 – Luxembourg
- +353 – Ireland
- +354 – Iceland
- +355 – Albania
- +356 – Malta
- +357 – Cyprus
- +358 – Finland & Åland Islands
- +359 – Bulgaria
- +36 – Hungary
- +370 – Lithuania
- +371 – Latvia
- +372 – Estonia
- +373 – Moldova & Transnistria
- +374 – Armenia & Nagorno-Karabakh
- +375 – Belarus
- +376 – Andorra
- +377 – Monaco
- +378 – San Marino
- +380 – Ukraine
- +381 – Serbia
- +382 – Montenegro
- +383 – Kosovo
- +385 – Croatia
- +386 – Slovenia
- +387 – Bosnia and Herzegovina
- +389 – Macedonia
- +39 – Italy & Vatican City