# WHATPORT(6969)

## NAME

port 6969 — BitTorrent tracker (IANA: acmsoda) — The customary BitTorrent tracker port — announce and scrape traffic from torrent clients.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA has 6969 registered as "acmsoda" on both TCP and UDP, a registration with no public protocol behind it. What actually runs there is BitTorrent tracker software: opentracker binds 0.0.0.0:6969 and [::1]:6969 with no configuration options given, and countless `http://tracker.example:6969/announce` and `udp://tracker.example:6969/announce` URLs in torrent files follow that convention. A tracker only brokers peer lists — it does not carry file content — so an open 6969 means someone is coordinating swarms, not serving data.

## EXPOSURE

**Fine to expose.** Public trackers are public by design; the exposure question is policy and bandwidth (open trackers attract heavy unsolicited announce traffic), not confidentiality.

## CHECK

```sh
curl -sI http://TARGET:6969/announce
```

## SEE ALSO

- docs — [opentracker — open and free BitTorrent tracker (binds 6969 by default)](https://erdgeist.org/arts/software/opentracker/) (erdgeist.org)
- iana — [IANA Service Name and Transport Protocol Port Number Registry — 6969](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=6969) (iana.org)

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HTML: <https://whatport.net/6969/> · JSON: <https://whatport.net/6969.json> · full dataset: <https://whatport.net/ports.json>