Klaestron IV
From Star Trek : Freedom's Wiki
Klaestron IV is the homeworld of the Klaestron species. (DS9: "Dax")
Klaestron IV had a capital city and an Inn outside the capital where Curzon Dax and Enina Tandro spent some time. (DS9: "Dax")
In 2371, Julian Bashir visited Klaestron IV to learn a new treatment for burn victims. According to him, the technology had to be seen to be believed. (DS9: "Second Skin")