From the Wikipedia page [1]
Auvergne (French pronunciation: [ovɛʁɲ]; Auvergnat (occitan): Auvèrnhe / Auvèrnha) is a former administrative region of France. Since 1 January 2016, it is part of the new region Auvergne-Rhône-Alpes. It comprises four departments: Allier, Puy-de-Dôme, Cantal and Haute-Loire.