The Pannonian Avars or Carpathian Avars were an alliance of several groups of Eurasian nomads of various origins. The peoples were also known as the Obri in the chronicles of the Rus, the Abaroi or Varchonitai, or Pseudo-Avars in Byzantine sources, and the Apar to the Göktürks. They established the Avar Khaganate, which spanned the Pannonian Basin and considerable areas of Central and Eastern Europe from the late-6th to the early-9th centuries.