Unassigned at IANA; in practice a spare HTTP port next to 8080.
IANA lists 8085 as Unassigned for both TCP and UDP, so nothing owns it. It shows up when a machine already has something on 8080 through 8084 and the next process takes the next number — a second web app, an admin UI, or a container port mapping. Anything you find here has to be identified from its banner or response, not from the port.
Expose with care
An unregistered HTTP port is usually something a developer or a compose file bound without thinking about the network it landed on.
$ curl -sI --max-time 5 http://TARGET:8085/Seen 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.