Telephone country codes never begin with zero.
Country code +35, dialed as 00 35 from many places, is an incomplete country code in Europe. You need one more digit. Specifically:
Country code +5, dialed as 003 5 from many places, is an incomplete country code in the Americas. You need one or two more digits to specify the country.
To avoid confusion, it is best to write an international telephone number in correct international format, beginning with the plus symbol and the correct telephone country code (e.g., +351 or +55), omitting any dialing prefix.
(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.)
Portugal
The telephone number code 003522 is associated with Portugal, specifically for the region of Madeira. The "0035" prefix indicates the country code for Portugal, while "22" is used for the specific area within Madeira. When dialing from abroad, you would use the full code, starting with the international dialing prefix.
Leichtenstein is telephone country code +423.
where is telephone country code 1816
That is not a country code.
00 35
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.