Calling Norfolk Island from the United States explained:

• 011 - US exit code; dial first for international calls made from the USA or Canada
• 6723 - Country Code for Norfolk Island
• Phone Number - 5 digits
• US to Norfolk Island international dialing format: 011 6723 ?? ???

How to dial to Norfolk Island cellular:

• dialing format for calls to a cell phone: 011 6723 5? ??? (or 8? ???)

Phone Books:

• White and Yellow Pages - by Norfolk Telecom