# WHATPORT(31038)

## NAME

port 31038 — Unassigned — Unregistered, no default service, and inside the Kubernetes NodePort range.

Protocol: TCP  
IANA registry

## DESCRIPTION

31038 is in IANA's unassigned 31030–31336 block, with no service name, contact, or reference. Nmap's table carries it only as an unknown TCP port with a low observed frequency and has no UDP entry for it at all. Like the rest of 30000–32767 it can be handed out as a Kubernetes NodePort, which is the most common structural explanation for finding it open. Beyond that there is no software known to choose it as a default.

## EXPOSURE

**Expose with care.** An unidentified listener — fingerprint the banner and judge the service, not the port number.

## CHECK

```sh
nc -vz -w 3 TARGET 31038
```

## SEE ALSO

- iana — [IANA port registry — 31038 (unassigned)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=31038) (iana.org)
- docs — [Kubernetes documentation — Service type: NodePort](https://kubernetes.io/docs/concepts/services-networking/service/) (kubernetes.io)

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