Calling Norfolk Island from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 672 - Country Code for Norfolk Island
• Phone Number - 6 digits, the area code (initial digit) is 3 for all telephone numbers
• US to Norfolk Island international dialing format: 011 672 3 ?????

How to dial to Norfolk Island cellular:

• dialing format for calls to a cell phone: 011 672 3 5???? (or 3 8????)

Phone Books:

• White and Yellow Pages - by Norfolk Telecom