Brazil is country code +55.
(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)
The telephone country code for Brazil is +55, and the area code for entire state of Roraima, is 95, or +55 95 in international format.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
The country code and area code of Manaus- AM, Brazil is 55, (0)92.
The country code and area code of Tocantins- TO, Brazil is 55, (0)63.
The country code and area code of Curitiba- PR, Brazil is 55, (0)41.
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.