Unassigned at IANA — a gap between the SpyTech and Bloomberg registrations.
The IANA registry marks 8193 Unassigned, sitting between spytechphone on 8192 and Bloomberg's blp1 on 8194. Nothing standard listens here. In practice it is a locally chosen port, and its neighbours are a better clue than the number itself: a 8193 next to an active 8194 on a finance workstation is worth checking against the Bloomberg software on that machine.
Expose with care
Nothing is defined for this port, so a listener is an unreviewed local decision until you identify it.
$ sudo lsof -nP -iTCP:8193 -sTCP:LISTENSeen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
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Corrections or a missing port? Reply @rimrocksystems.