Starbase 219

From Memory Alpha, the free Star Trek reference

Starbase 219 is a Federation starbase administrated by Starfleet.

In 2370, Admiral Nakamura ordered Captain Picard of the USS Enterprise-D to participate in the annual Starfleet Admiral's Banquet on the starbase, but due to problems with the ship's new warp core, the captain could not make it in time. (TNG: "Phantasms")