Telephone country code +1 is North America (USA, Canada, etc.), but there are no valid numbers beginning with +1 1.
invalid number
Telephone country code +1 is North America (USA, Canada, etc.), but the next digit cannot be a 1.
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.
Mozambique is country code +258.