That's not a valid telephone country code. Country codes never begin with zero.
Country code +49, dialed as 00 49 from many places, is Germany, and a number beginning +49 3 is a landline in the former East Germany.
(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 Zimbabwe is +263. The area code for Shangani is 050, or +263 50 in international format.
The telephone country code for Vietnam is +84. The area code for Dak Lak is 050, or +84 50 in international format.
The telephone country code for Italy is +39. The area code for Firenze (Florence) is 055, or +39 055 in international format. Note: unlike most countries, you DO NOT drop the trunk prefix 0 from the Italian domestic area code when putting the number in international format.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
Fiji has telephone country code +679.
Country code +57 is Colombia.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Vanuatu is country code +678.