# WHATPORT(5959)

## NAME

port 5959 — Unassigned / VNC display :59 — Unassigned by IANA; the plausible listener is VNC display :59.

Protocol: TCP  
IANA registry

## DESCRIPTION

5959 has no IANA service name; the registry covers it only as part of the Unassigned 5915-5962 range. Under the RFB 5900+display rule it is display :59. Anything else answering here is a private application that simply picked a free high port.

## EXPOSURE

**Do not expose.** An unidentified listener in the VNC block should not be reachable from untrusted networks; confirm what owns it locally before opening anything.

## CHECK

```sh
nmap -Pn -sV -p 5959 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)
- spec — [RFC 6143 — The Remote Framebuffer Protocol](https://datatracker.ietf.org/doc/html/rfc6143) (datatracker.ietf.org)

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HTML: <https://whatport.net/5959/> · JSON: <https://whatport.net/5959.json> · full dataset: <https://whatport.net/ports.json>