Turkey is country code +90. Most numbers have 10 digits after the country code.
Mobile numbers begin with +90 5.
Turkish area codes are uniformly 3 digits, followed by a 7-digit subscriber number. For example, Istanbul is area codes 212 (European side) and 216 (Asian side), and Ankara is area code 312.
(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.).
90 is the dialling code for Turkey
The Turkish Republic of Northern Cyprus is a self-declared state, recognized only by Turkey. It uses Turkey's telephone country code +90, with the telephone area code +90 392.
Telephone numbers in Turkey consist of the telephone country code +90, followed by a three-digit area code and a 7-digit subscriber number.
Leichtenstein is telephone country code +423.
'00' is not part of the country code, it is a commonly used international access prefix. Country code +90 is Turkey, and +90 542 is a Vodafone mobile.
where is telephone country code 1816
That is not a country code.
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.