How big was Dacia, really?
If we look at ''ancient'' maps that are not a reliable source (we don't have trustworthy historical sources), Dacia was well South of the Danube River (See Dacia Mediterranea).
6th century CE Dacia Mediterranea:
https://upload.wikimedia.org/wikipedia/commons/0/0e/Balkans_6th_century.svg?utm_source=ro.wikipedia.org&utm_campaign=imageinfo&utm_content=original
With the Deutsche (Germans, from Ra Man > Roman > rman) and the Dutch (the population of Netherlands) who still call themselves Daci and the region of Anatolia named Dacia (Cappadocia), it looks like Dacia covered significant parts of Eurasia.
Dacia Ripensis' capital was Ratiaria - derived from RA Atena or Ati Ria.