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.
Area code 000 because there is no requirement that caller id data represent a valid telephone number. Area code 000 Area code 000 is not a valid number in any country where dialling '0' reaches an operator. Area code 000 is not a valid North American Numbering Plan exchange or area code. It is invalid in the European Union and many other nations where '0' is reserved as a trunk prefix and '00' as an international call prefix. In Australia, 000 is reserved as an emergency telephone number. This code may show up as part of a number on a caller id system