This starbase was only mentioned in dialogue.

For the Star Trek: Prodigy episode "Let Sleeping Borg Lie", UI graphic designer Dominique Rossier created an info panel for the USS Dauntless mess hall depicting the Milky Way Galaxy with planet and Starfleet space station locations labeled. Identified as a space station, Deep Space 12 was one of the locations mentioned on the chart. Although the panel did not appear in the episode, it can be seen at Rossier's artist page at Art Station. [1]