# WHATPORT(301)

## NAME

port 301 — Unassigned — No IANA assignment and no established convention — an open 301 identifies nothing.

Protocol: TCP  
IANA registry

## DESCRIPTION

The registry has no entry for 301 on TCP or UDP; the surrounding 301–307 range is likewise blank. Nmap carries it as "unknown" with a low but non-zero open rate, which is characteristic of a port used by a handful of appliances or in-house services rather than any standard protocol. There is no banner, no RFC, and no vendor default worth naming here. Fingerprint the listener; the number will not tell you.

## EXPOSURE

**Expose with care.** Unknown service on a privileged port — determine what it is and whether it authenticates before it goes anywhere near a public interface.

## CHECK

```sh
nmap -sV -p 301 TARGET
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry — 301](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=301) (iana.org)

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HTML: <https://whatport.net/301/> · JSON: <https://whatport.net/301.json> · full dataset: <https://whatport.net/ports.json>