Antarctica does not have a country code of its own. Several countries operate research bases in Antarctica, with a variety of different numbers.
For example:
Australian bases use +672.
New Zealand's Scott Base uses +64 2 409.
U.S. bases generally use satellite telephones in codes depending on the satellite provider.
(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 telephone country code for Australian research bases in Antarctica is +672. Numbers in the Mawson base begin with +672 117, with a further three digits.
There is no specific telephone area code for the South Pole. Research stations and personnel stationed in Antarctica typically use satellite phones with international dialing codes from their home country.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
The country code and area code of Antarctica, New Zealand is 64, (0)2.
Telephone country code 897 is not currently assigned to any country. Country calling codes are assigned by the International Telecommunication Union (ITU) and are typically three digits long. The range of assigned country calling codes is from 1 to 999, with some numbers reserved for special purposes. If a country were to be assigned the code 897 in the future, it would be updated in the ITU's official list of country calling codes.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Togo is country code +228.
Liberia is country code +231.