# WHATPORT(22939)

## NAME

port 22939 — Unassigned — Unassigned on both TCP and UDP, with no service name anywhere in the public record.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA has 22939 inside the unassigned block 22801-22950; no vendor or protocol has claimed it. Nmap carries 'unknown' entries for both 22939/tcp and 22939/udp with low open-frequencies, enough to include the TCP side in the default scan set. There is no documented default that uses this number, so an open port means a locally chosen listener — a custom service, a tunnel endpoint, or a remapped container port.

## EXPOSURE

**Expose with care.** Decide from the fingerprint. An unnamed port carrying a real service still carries that service's risk.

## CHECK

```sh
nmap -Pn -sV -p 22939 --reason TARGET
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml) (iana.org)
- source — [Nmap nmap-services frequency table](https://github.com/nmap/nmap/blob/master/nmap-services) (github.com)

---

HTML: <https://whatport.net/22939/> · JSON: <https://whatport.net/22939.json> · full dataset: <https://whatport.net/ports.json>