Starbase 212

From Memory Alpha, the free Star Trek reference

Starbase 212 is a Federation starbase located near the Klingon border.

In 2369, the USS Enterprise-D asked the starbase to help in the search for Aquiel Uhnari.

Later on, Lt. J.G. Uhnari transferred from Relay Station 47 to Starbase 212 to wait for reassignment. (TNG: "Aquiel")