No registration, no scanner name — an anonymous high port.
40193 is unassigned at IANA and unnamed in Nmap's service database, which records it open on about 0.04% of scanned hosts. It sits well inside the Linux ephemeral range, so plenty of sightings are ordinary outbound connections rather than services. Whatever listens here was chosen locally.
Expose with care
No known protocol to reason about — identify the process and its authentication before allowing inbound traffic.
$ nmap -sV -Pn -p 40193 TARGETSeen 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.