The other half of the 55055/55056 pair — equally unregistered and equally unidentified.
Like its neighbour, 55056 falls in the RFC 6335 Dynamic/Private range and has no IANA registration. Nmap's nmap-services scores it 0.000304 as "unknown", which is enough to include it in the default top-1000 TCP scan. SANS ISC shows an empty service field and no tracked vulnerabilities. If you find it open, the only reliable identification path is on the host itself.
Expose with care
Unknown service. Nothing here justifies an inbound firewall rule until the owning process is named.
$ nmap -Pn -sV --version-all -p 55056 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.