2 entries are registered on port 3386. 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
2 transports in use
entries encrypted on the wire
2 of 2 iana-registered
| port | service | proto | category | risk | views |
|---|---|---|---|---|---|
| :3386 | GTP (GPRS Tunneling Protocol) | TCPUDP | Network Services | caution | 16.7k |
| :3386 | GPRS SIG | UDP | Network Services | safe | 0 |
GPRS Tunneling Protocol (GTP) is an IP-based protocol primarily used within 2G, 3G, and 4G mobile networks to manage subscriber data sessions and carry user data. Operated mostly over UDP, it facilitates data tunneling between network nodes such as SGSNs, GGSNs, MMEs, and PGWs, enabling mobile subscribers to access internet services while roaming or at home.
port 3386 as GTP (GPRS Tunneling Protocol) →UDP/3386 is assigned to GPRS SIG, a GPRS-related signaling service.
port 3386 as GPRS SIG →The registry says what 3386 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 ':3386\b'lsof -nP -iTCP:3386 -sTCP:LISTENnetstat -ano | findstr :3386On 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 3386 — 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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