Xendi Starbase 9

From Memory Alpha, the free Star Trek reference.

Xendi Starbase 9 is a Federation starbase near the Xendi Sabu system. In 2364, the USS Enterprise-D towed the USS Stargazer to Xendi Starbase 9 after it was returned to Starfleet by the Ferengi. (TNG: "The Battle")

The Constellation-class Starfleet Technical Database article calls Xendi Starbase 9 a "Federation contract repair base".