# WHATPORT(6247)

## NAME

port 6247 — Unassigned — Unassigned by IANA — sits in the 6245-6250 gap next to JEOL's instrument ports.

Protocol: TCP  
IANA registry

## DESCRIPTION

The registry shows 6245-6250 as unassigned. Its only notable neighbours are 6241-6244, registered to JEOL for their Network Services data transport and discovery protocols used by scientific instruments. Nothing is documented as using 6247 itself. A listener here is an application that picked a free high port, so identify it by process rather than by port number.

## EXPOSURE

**Expose with care.** An unregistered, unidentified listener gets no verdict until you know what it is; do not expose it externally in the meantime.

## CHECK

```sh
sudo lsof -nP -iTCP:6247 -sTCP:LISTEN
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry — 6245-6250 unassigned](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=6247) (iana.org)

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HTML: <https://whatport.net/6247/> · JSON: <https://whatport.net/6247.json> · full dataset: <https://whatport.net/ports.json>