# WHATPORT(4002)

## NAME

port 4002 — pxc-spvr-ft (registered) — An IANA registration with no assignee on record and no public documentation — in practice, a spillover dev port next to 4000 and 4001.

Protocol: TCP  
IANA: pxc-spvr-ft

## DESCRIPTION

IANA registers 4002 as pxc-spvr-ft, part of a small block (4002–4007: pxc-spvr-ft, pxc-splr-ft, pxc-roid, pxc-pin, pxc-spvr, pxc-splr) whose registry rows carry no assignee and no reference. No specification or vendor documentation for the pxc services is publicly available. What you actually find on 4002 is usually a second local service that took the next free port after 4000 or 4001 — a dev server, an API stub, a container's second port mapping.

## EXPOSURE

**Expose with care.** Nothing meaningful is registered here in practice, so a public 4002 is an unidentified service — find the process first; if it is a dev server or debug endpoint, it should not be listening publicly at all.

## CHECK

```sh
sudo lsof -nP -iTCP:4002 -sTCP:LISTEN
```

## SEE ALSO

- iana — [IANA port registry — 4002 (pxc-spvr-ft)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=4002) (iana.org)

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HTML: <https://whatport.net/4002/> · JSON: <https://whatport.net/4002.json> · full dataset: <https://whatport.net/ports.json>