Unassigned by IANA, inside the empty 9061–9079 block, with no service that commonly claims it.
IANA lists 9061–9079 as Unassigned, so 9071 has no service name and no protocol you can assume. No widely deployed product defaults here. If it is open, an application or an operator chose the number, and the only honest identification is finding the process that owns the socket.
Expose with care
Decide after identification; an unregistered port carries no implied safety.
$ sudo lsof -nP -iTCP:9071 -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.