Kusidasi, Turkey, is in area code +90 256.
(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, and many other countries use different prefixes.)
The country code and area code of Adana, Turkey is 90, (0)322.
The country code and area code of Adiyaman, Turkey is 90, (0)416.
The country code and area code of Afyon, Turkey is 90, (0)272.
The country code and area code of Agri, Turkey is 90, (0)472.
The country code and area code of Aksaray, Turkey is 90, (0)382.
The country code and area code of Amasya, Turkey is 90, (0)358.
The country code and area code of Ankara, Turkey is 90, (0)312.
The country code and area code of Antalya, Turkey is 90, (0)242.
The country code and area code of Ardahan, Turkey is 90, (0)478.
The country code and area code of Artvin, Turkey is 90, (0)466.
The country code and area code of Aydin, Turkey is 90, (0)256.
The country code and area code of Balikesir, Turkey is 90, (0)266.