# WHATPORT(3001)

## NAME

port 3001 — Second dev server / OrigoDB (registered) — Usually the second app on a developer's machine, after something already took 3000.

Protocol: TCP  
IANA: origo-native

## DESCRIPTION

3001 has no meaningful standard behind it: it is what a Node, Rails, or Vite process binds when 3000 is occupied, so a full-stack repo commonly runs an API on 3000 and a client on 3001 or the reverse. IANA registers TCP 3001 to OrigoDB's native interface (the UDP side is Reserved), and older scanner databases label it Nessus, from a daemon port that Nessus has not used in decades. On a scan it is nearly always a development or internal HTTP service.

## EXPOSURE

**Expose with care.** A production app behind a reverse proxy is fine; a framework dev server on 3001 has debug endpoints and verbose errors and should never face the internet.

## CHECK

```sh
curl -sI --max-time 5 http://TARGET:3001/
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry — 3001 (origo-native)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3001) (iana.org)
- source — [DevrexLabs/OrigoDB — the registrant's project](https://github.com/DevrexLabs/OrigoDB) (github.com)

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HTML: <https://whatport.net/3001/> · JSON: <https://whatport.net/3001.json> · full dataset: <https://whatport.net/ports.json>