Starbase 112

From Memory Alpha, the free Star Trek reference.

Starbase 112 was a Starfleet starbase. It was the last assignment of former USS Victory crewmember Brevelle before his disappearance in 2367. (TNG: "Identity Crisis")

On Stardate 46192.3, the USS Enterprise-D stopped at Starbase 112 to take on relief supplies destined for Tagra IV. They also took aboard an intern named Amanda Rogers. (TNG: "True Q")

In the non-canon comic book "Space Seeds", Starbase 112 is noted to be near the Armada, an agricultural colony on an asteroid belt.