How to dial a phone number in Golestan Iran?
From outside Iran, a caller would dial their international call prefix (typically 00 in Europe and 011 in North America), followed by 98 (the country code for
Iran), then 174 the 2-3 digit area code of the place you're calling (Golestan) minus the trunk code '0', and finally the local number minus the trunk code '0'. All local telephone numbers dialled within Iran must use the leading '0' and the area phone code, even when calling locally.