The OHS2132-04 system existed inside the sector of the Ash Worlds, which itself was a component of the Slice in the Outer Rim Territories. Before being called the OHS2132-04 system, it was called the Ulonsus system and it was within the Kiirium Reaches area of the Tionese empire under the conqueror Xim, specifically between 25,120 BBY and 25,096 BBY. During this time, the Ulonsus system had hyperlane connections to the Balshebr, Pakuuni, and Xoraes systems, and Xim strategically redeployed his military units from Pakuuni to Ulonsus, and subsequently to Xoraes.
The 2009 reference work The Essential Atlas, written by Daniel Wallace and Jason Fry, was the first time the OHS2132-04 system was mentioned, and it was located at grid coordinate T-7.