Close, but not quite. ISD stands for International Subscriber Dialing.The ISD code is more generally known as the telephone country code, or the country code and city code (area code).
0017 is not a country code.
Syria
"ISD" stands for International Subscriber Dialing. An ISD code is a country code, or a country code and city code, often quoted with the local international access prefix. For example, the country code and city code for London, England, UK, is +44 20, so in many countries people will quote the ISD code for London as 004420. However, it is more appropriate to quote it as +44 20, since different countries use different prefixes for outbound international calls.
Country code +30 is Greece, but there are no valid numbers beginning with +30 11.
Pattaya, Thailand, is in country code +66, area code 38. From the US, dial 011-66-38.
The telephone country code for Mozambique is +258. The plus sign means "insert your local international dialing prefix here."
ISD CALL FROM INDIA TO PHILIPPINES The ISD Number is 63 So if you are calling to Philippines Mobile Number dial following 0063(followed by mobile Number)
whatever may be the country code dial 00 before the country code. 55 is the country code for Brazil, 11 is the code for Sao Paulo. So dial 00-55-11-number to make calls to number in Sao paulo.
Using a GSM/UMTS phone, dial "+" followed by the country code, national destination code, and phone number of the place you want to call.
Dial the ISD code to US (001) and then dial the number you wish. There are several different area codes for different parts of Missouri.
The ISD code of India is 91.