# WHATPORT(8099)

## NAME

port 8099 — Unregistered HTTP alternate — Unassigned at IANA; a round-number spare HTTP port people pick by hand.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA lists 8098 and 8099 together as Unassigned, so nothing is registered here. 8099 gets chosen the way 8080 and 8888 do — it is memorable and usually free — which makes it a common manual pick for a second web app, an internal tool, or a test server. There is no protocol implied by the number.

## EXPOSURE

**Expose with care.** Hand-picked ports are usually hand-configured services; confirm it authenticates before treating it as safe to reach.

## CHECK

```sh
curl -sI --max-time 5 http://TARGET:8099/
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry — 8099](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=8099) (iana.org)

---

HTML: <https://whatport.net/8099/> · JSON: <https://whatport.net/8099.json> · full dataset: <https://whatport.net/ports.json>