Niger is country code +227.
Landline numbers begin with +227 20.
Fixed wireless numbers begin with +227 21.
Mobile numbers begin with +227 9.
.ne is the Internet country code for Niger, a country in Africa. Note that Niger and Nigeria are two different countries.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
There is no 909 country code.
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.
Liberia is country code +231.
Angola is country code +244.