The Cook Islands (including Rarotonga) use country code +682. There are no city codes or area codes. The local number is 5 digits.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The Pitcairn Islands do not have a telephone country code assigned. There are some reports of telephones in the Pitcairn Islands using numbers from New Zealand's country code +64 and/or using satellite telephones with numbers corresponding to the satellite provider(s).
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.
(see related question)
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.
There is no 909 country code.