# WHATPORT(720)

## NAME

port 720 — Unassigned — Not registered with IANA and not tied to any known protocol.

Protocol: TCP  
IANA registry

## DESCRIPTION

Port 720 has no entry in the IANA service name and port number registry, and Nmap's service database lists it as "unknown" with a very low observed frequency. There is no well-documented application, malware family, or convention that claims it. Anything listening here is a locally chosen port — an internal service, a test harness, or a tunnel endpoint. The only way to know what it is, is to fingerprint it.

## EXPOSURE

**Expose with care.** An unregistered port tells you nothing about what is behind it; identify the service before deciding whether it belongs on a public interface.

## CHECK

```sh
nmap -sV -p 720 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)

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HTML: <https://whatport.net/720/> · JSON: <https://whatport.net/720.json> · full dataset: <https://whatport.net/ports.json>