The territory of Western Sahara is occupied and controlled by Morocco, so it uses Morocco's telephone country code +212.
Telephone country code +221 is Senegal, in western Africa, but there are no valid telephone numbers beginning with +221 4.
Each country in West Africa has its own separate telephone country code, except for Western Sahara, which is effectively controlled by Morocco. The country codes are all three digits, beginning with +2. For more information, ask about a specific country.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
There is no 909 country code.
Ghana, a country in western Africa, uses telephone country code +233. Legitimate businesses and individuals in Ghana have telephone numbers beginning with +233, but there are also some scams originating from Ghana.
There is no telephone country code +897, nor +89, nor any other country code beginning with +89. There are no valid telephone numbers beginning with +89.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Togo is country code +228.