2 entries are registered on port 6969. It is a registered port (1024–49151) — IANA records an assignee, but nothing stops other software from listening here, which is why the number carries more than one entry.
ACMSODA is a registered network port used primarily by the ACMSoda protocol or application, which facilitates communication between clients and servers for specialized data exchange or device control. Its typical use is within specific vendor software or custom applications, rather than general-purpose internet communication.
Port 6969 is typically associated with BitTorrent trackers, which coordinate the distribution of files shared through the BitTorrent peer-to-peer (P2P) file-sharing protocol. Trackers help manage connections between peers by maintaining a list of active clients sharing a specific file, facilitating efficient data exchange during downloads.
The registry says what 6969 is registered to. What is listening on it right now is decided by the host, and only the host can be asked. Each of these prints the process behind the socket.
linux
ss -ltnp | grep ':6969\b'
macos
lsof -nP -iTCP:6969 -sTCP:LISTEN
windows
netstat -ano | findstr :6969
On Linux and Windows the process name comes back with the socket; on macOS lsof needs sudo to name a process that isn't yours. Match what it prints against the 2 entries above.
A port number is not a service. Anything may listen on 6969 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.