Rog Prison

From Memory Alpha, the free Star Trek reference.

Rog Prison was a detention facility run by the Ferengi Alliance. Former DaiMon Bok was incarcerated there after unsuccessfully attempting to exact revenge against Jean-Luc Picard in 2364. Bok eventually bought his way out, however, and made his way to the Dorias Cluster. (TNG: "Bloodlines")