Telephone numbers in Norfolk Island Telephone numbers in Norfolk Island In Norfolk Island: Country code +672 was originally assigned to Portuguese Timor until annexed by Indonesia in 1975. It is also used for the Australian Antarctic Territory, whose numbers are in area code 1. The code was also used for Christmas Island and the Cocos Keeling Islands until October 1994 (encompassing area codes 2 and 4), when they were migrated to the +61 country code, under area code 091 (using exchange prefixes 62 for Christmas Island and 64 for the Cocos Islands). These numbers have since been migrated to 08 9162 and 08 9164 respectively.
Telephone prefix Telephone prefix A telephone prefix is the first set of digits after the country, and area codes of a telephone number; in the North American Numbering Plan countries (country code +# ), it is the first three digits of a seven-digit phone number, 3-3-4 scheme. In other countries both the prefix and the number may have different lengths. It shows which exchange the remaining numbers refer to. A full telephone number is usually made up of country code (required for international calls only), area code (required for calls between telephone areas), prefix, and subscriber number. Some places restrict certain prefixes