Internet-Security.com TCP port 30001 details

Universal Robots industrial robot controllers (CB3 and e‑Series) listen on TCP 30001 for their Primary client interface, which accepts URScript programs and streams robot state to external control software.
URSim, the official Universal Robots simulator, exposes the same interfaces as the physical robots, including TCP 30001 for the Primary interface.
Foundry Virtual Tabletop often uses TCP 30001 when hosting multiple game instances (its default is 30000, with additional instances commonly bound to 30001, 30002, etc.).
Security note: Exposed UR controllers on TCP 30001 have been highlighted in security research and internet scans; if left reachable from untrusted networks, attackers can send URScript to control the robot, so this port should be restricted or placed behind a VPN.

TCP 30001