(see related question)
The Aland Islands are part of Finland, which is telephone country code +358.
The Marshall Islands use country code +692.
The Falkland Islands (also known as the Islas Malvinas) are country code +500.
I found the answer on wikipedia. Not sure if this is the zip code for the airport but this is the zip code for the islands. 6799
The Solomon Islands use country code +677. There are no city codes or area codes. The local number is 5 or 7 digits.
Telephone country code +1 is North America, including the USA, Canada, and 18 islands in or near the Caribbean, but there is no area code +1 467. There are no valid telephone numbers beginning with +1 467.
The telephone country code for the US (including territories in the Caribbean and Pacific), plus Canada and a bunch of Caribbean/nearby islands, is +1.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
Telephone country code +1 is North America, including the USA, Canada, and certain Caribbean/nearby islands. Telephone area code +1 937 is for southwestern Ohio, including Dayton but not including Cincinnati.
ISO country code MF is the French northern half of the Caribbean island of Saint-Martin. French Saint-Martin shares telephone country code +590 with Guadeloupe and several other French Caribbean islands. ISO country code SX is the Dutch southern half, Sint Maarten, which is now in North American telephone area code +1 721.