Registered to a Configuration Cloud Service, and almost never seen in the wild.
IANA assigns 8015/tcp the name cfg-cloud, "Configuration Cloud Service"; the matching UDP port is merely Reserved. Nmap carries the same name and ranks it among its least frequently observed ports. There is no widely deployed software known for this port, so an open 8015 is nearly always an ordinary application that chose a free number near 8000.
Expose with care
The registration tells you nothing useful about what is really listening. Identify the service before deciding whether it should be reachable.
$ nmap -sV -Pn -p 8015 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.