Dial 011, the North American international access number.
Dial 39 for Italy's country code.
Dial the city code, including the initial 0. Unlike almost all foreign countries, Italy does not require callers to drop the initial 0 from the city code when dialing from the U.S. Note also that Italian city codes are between two and four digits long.
Dial the phone number. Italian phone numbers are between five and eight digits long.
