Well, darling, country code 00164 doesn't exist in the telephone world. You might want to double-check that number before trying to make a call, unless you're trying to reach some mysterious alternate universe where phone codes are as real as unicorns. Just remember, when in doubt, Google it out.
The country code 00164 corresponds to the United States Virgin Islands. This territory is located in the Caribbean and is an unincorporated territory of the United States. The US Virgin Islands consist of several islands, including St. Thomas, St. John, and St. Croix.
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.