Suliban was a location in the Beta Quadrant.
In 2259, Suliban's location was labeled on a stellar cartography chart that was seen on the USS Enterprise's ready room viewscreen. This location's symbol had a blue color, indicating that it was affiliated with the United Federation of Planets. (SNW: "Strange New Worlds", "Children of the Comet", "Spock Amok")
Suliban's location was labeled in a Federation star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters in 2399 and on the bridge of the USS Titan-A in 2401. This location was in or near to Federation space. (PIC: "Maps and Legends", "The Next Generation", "Disengage")
This location might be associated with the Suliban homeworld.