Attic Greek Region Attica, Lemnos Era c. 500–300 BC; evolved into Koine Language family Indo-European Hellenic Ancient Greek Eastern Attic Greek Language codes ISO 639-3 – Linguist List grc-att Glottolog None Distribution of Greek dialects in Greece in the classical period.[1] Western group: Doric proper Northwest Doric Achaean Doric Central group: Aeolic Arcado-Cypriot Eastern group: Attic Ionic