Registered as sdr on TCP and Reserved on UDP; day to day it is an anonymous application port.
IANA registers 9010/tcp as sdr, the Secure Data Replicator Protocol, and marks 9010/udp Reserved. Neither shows up much. Because it sits in the 90xx band that Java and JVM tooling likes for management and debug endpoints, a listener on 9010 is most often a locally configured application port rather than the registered protocol. Confirm by process before drawing conclusions.
Expose with care
If this turns out to be a JVM management or debug endpoint, treat it as never — those grant code execution to anyone who can connect.
$ sudo lsof -nP -iTCP:9010 -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.