 Administrative divisions with ISO 3166-1 are cited for statistics matters even when they do not have a special status (for example, the overseas regions of France).Administrative divisions that are entirely Antarctic claims suspended under the Antarctic Treaty are not listed.Not all the autonomous areas are part of the formal hierarchy of the administrative division system of a country (for example, the autonomous region of Zanzibar comprises 5 regions of Tanzania, the first tier on administrative divisions on that country).