Permanent Resident of Norfolk Island visa
A Permanent Resident of Norfolk Island visa was a type of Australian immigration visa granted on arrival in Australia to a non-citizen who is a permanent resident of Norfolk Island. Before 1 July 2016, Norfolk Island was the only inhabited Australian territory that was outside the Australian migration zone and had its own immigration laws (which did apply to Australian citizens).
Source: Wikipedia — Permanent Resident of Norfolk Island visa (CC BY-SA 4.0)