Telephone numbers in Turkey former area codes other than the primary one mentioned. The country calling code of Turkey is 90. trunk / inner - city code number : 0 international code : 00 Ankara DMS-300 Istanbul DMS-300 İzmir DMS-300 Ankara, İstanbul and İzmir DMS-300 International Exchanges Accept: L/D + area code + subscriber number + ST L /D = language digit : 0 (direct dialing) L /D = language digit : 2 (operator assistance) There are two international operator centers in Turkey, Ankara and İstanbul. Each one of these centers provides operator telephone services according ITU/T dialing: L/D + code11 + ST (Random)
National conventions for writing telephone numbers Area Code Exit code that must be dialed when a number with a different area code is being called. So when calling from outside of Turkey those 0s are not dialed. The dialing format when calling from outside Turkey is +90 BBB AAA AA AA and NOT +90 0BBB AAA AA AA. Unlike the North American system, the Country Exit Code isn't 011 but 00. So it is one "0" to exit area and one more "0" to exit the country. Dialling codes, also known as "area codes" are optional for local callers (but should not be surrounded by parentheses),