Telephone Calls
When using the tradional - wire - network or the GSM mobile network in Europe a country code must be used when calling outside the country you are in.
In most cases first a "00" (011 in US) must be dialed, then the country code and then the subscriber number. But this may change from country to country. Therefor in the ETG the "+" sign is used to indicate the international dialing..
In the next column the official country codes are given.

Line:
Int - cc - area - subscriber
00 - 353 - 51 - 123456

Mobile:
Int - cc - network - subscriber
00 - 353 - 654 - 123456

Country Codes
Albania - +355
Andorra - +376
Armenia - +374
Austria - +43
Azerbaijan - +994
Belarus - +375
Belgium - +32
Bosnia Herzegovina - +387
Bulgaria - +359
Croatia - +385
Cyprus - +357
Czech Republic - +420
Denmark - +45
England - +44
Estonia - +372
Finland - +358
France - +33
Georgia - +995
Germany - +49
Greece - +30
Hungary - +36
Iceland - +354
Ireland - +353
Italy - +39
Latvia - +371
Liechtenstein - +423
Lithuania - +370
Luxembourg - +352
Macedonia - +389
Malta - +356
Moldova - +373
Netherlands - +31
Norway - +47
Poland - +48
Portugal - +351
Romania - +40
Russia - +7
Serbia - +381
Slovakia - +421
Slovenia - +386
Spain - +34
Sweden - +46
Switzerland - +41
Ukraine - +380