Demilitarized Zone (2259)
The Demilitarized Zone was a region of space in the Alpha Quadrant in the 23rd and 24th centuries.
In 2259, the location of this zone was labeled on a stellar cartography chart seen on the USS Enterprise's ready room viewscreen. (SNW: "Children of the Comet")
In the early 24th century, the location of this zone was labeled in a chart used during a Section 31 Alpha Team briefing. (Star Trek: Section 31)
This region was only mentioned in writing.