Telephone country code +33 (dialed as 00 33or 011 33 from many places) is France. Telephone area code +33 1 is Paris and the surrounding area.
(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 331 area code is used in Illinois by the following cities: Aurora, Naperville, Wheaton, Downers Grove, Elmhurst, Geneva, Lombard, Oswegp, Roselle, and St Charles.
Country code +33 is France, and +33 1 is Paris.
Los Angeles
Leichtenstein is telephone country code +423.
The country code and area code of Potsdam, Germany is 49, (0)331.
The country code and area code of Feni, Bangladesh is 880, (0)331.
where is telephone country code 1816
That is not a country code.
There is no 909 country code.
There is no telephone country code +897, nor +89, nor any other country code beginning with +89. There are no valid telephone numbers beginning with +89.
Gibraltar is country code +350.
Moldova is country code +373.
Slovenia is country code +386.
Togo is country code +228.
Liberia is country code +231.