2 entries are registered on port 30000. 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.
services registered on this number
1 transport in use
entries encrypted on the wire
1 of 2 iana-registered
| port | service | proto | category | risk | views |
|---|---|---|---|---|---|
| :30000 | Pokémon NetBattle | Gaming | caution | 3.9k | |
| :30000 | Secure Network Data Management Protocol | TCP | Network Services | safe | 0 |
Pokémon NetBattle is an unofficial online battle simulator that allows users to engage in Pokémon battles over the internet, providing a multiplayer experience reminiscent of the gameplay found in official Pokémon games. This service uses a custom communication protocol, typically accessed over a high port number, enabling players to connect, create teams, and participate in battles in real-time.
port 30000 as Pokémon NetBattle →Secure Network Data Management Protocol service assigned to TCP port 30000.
port 30000 as Secure Network Data Management Protocol →The registry says what 30000 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.
ss -ltnp | grep ':30000\b'lsof -nP -iTCP:30000 -sTCP:LISTENnetstat -ano | findstr :30000On 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 30000 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.
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