# WHATPORT(55056)

## NAME

port 55056 — Unassigned (dynamic range) — The other half of the 55055/55056 pair — equally unregistered and equally unidentified.

Protocol: TCP  
IANA registry

## DESCRIPTION

Like its neighbour, 55056 falls in the RFC 6335 Dynamic/Private range and has no IANA registration. Nmap's nmap-services scores it 0.000304 as "unknown", which is enough to include it in the default top-1000 TCP scan. SANS ISC shows an empty service field and no tracked vulnerabilities. If you find it open, the only reliable identification path is on the host itself.

## EXPOSURE

**Expose with care.** Unknown service. Nothing here justifies an inbound firewall rule until the owning process is named.

## CHECK

```sh
nmap -Pn -sV --version-all -p 55056 TARGET
```

## SEE ALSO

- spec — [RFC 6335 — Dynamic Ports (49152-65535)](https://www.rfc-editor.org/rfc/rfc6335.html) (rfc-editor.org)
- iana — [IANA port registry — search 55056](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=55056) (iana.org)

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HTML: <https://whatport.net/55056/> · JSON: <https://whatport.net/55056.json> · full dataset: <https://whatport.net/ports.json>