Country codes never begin with zero, and should be quoted without the international access prefix because that prefix varies from country to country.
If '00' is your international access prefix (the most commonly used), then you are asking about country code +1 (North America = USA, Canada, etc.), area code 263 (unused code), which means it's an invalid code.
If '001' is your international access prefix, then you are asking about country code +263 (Zimbabwe), area code 13 (Victoria Falls).
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
Country code +57 is Colombia.
Country code 52 is Mexico.
Fiji has telephone country code +679.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Vanuatu is country code +678.
Niue is country code +683.
Togo is country code +228.