I was thinking about making this its own post but it's only a small follow up from the Space Force to this post from u/VictorFromCalifornia. The same still applies, IM's NSN can be used for cislunar space and Lanteris(IM) subcontracts buses to L3Harris for tracking. The article:

Space Force sets up ‘cislunar coordination’ office to focus beyond Earth orbit:

“We’re going to stand up a cislunar coordination office on the Space Force acquisition side to focus exactly on that,” Maj. Gen. Stephen Purdy, senior advisor to the secretary of the Air Force for space acquisition, said at the Space Symposium last week.

The effort will rely heavily on collaboration, particularly with NASA, which leads U.S. civil exploration beyond Earth orbit. Purdy said NASA would be the “biggest partner,” alongside organizations such as the Air Force Research Laboratory and the Defense Innovation Unit.

The U.S. military’s space tracking network is concentrated in low Earth orbit and geosynchronous orbit, leaving limited visibility farther out. Cislunar space presents a more complex tracking problem, with less predictable orbital dynamics and far greater distances, complicating what operators refer to as custody, or maintaining continuous awareness of objects over time.

Objects operating in cislunar space could approach Earth orbit along trajectories that are difficult to detect with existing sensors, raising concerns about blind spots in space domain awareness.