Registered as objectmanager with no documentation and no known implementation.
The IANA registry lists objectmanager on TCP and UDP 2038 with an empty description, assignee and reference. Nothing well-known listens here, and Nmap's data shows it open on about 0.02% of scanned hosts. The generic name attracts guesses about CIM/WBEM object managers, but those services register elsewhere (5988/5989); the 2038 entry has no published protocol behind it.
Expose with care
Treat a listener here as unidentified software. Whatever is answering is not the registry name, so judge exposure by the actual process.
$ sudo lsof -nP -iTCP:2038 -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.