2 entries are registered on port 6242. 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 |
|---|---|---|---|---|---|
| :6242 | JEOL Network Services Dynamic Discovery Protocol 2 | UDP | Network Services | safe | 0 |
| :6242 | JEOL Network Services Data Transport Protocol 2 | TCP | Network Services | safe | 0 |
UDP/6242 is assigned to JEOL Network Services Dynamic Discovery Protocol 2, a JEOL device-discovery service.
port 6242 as JEOL Network Services Dynamic Discovery Protocol 2 →TCP/6242 is assigned to JEOL Network Services Data Transport Protocol 2; no established public use is known.
port 6242 as JEOL Network Services Data Transport Protocol 2 →The registry says what 6242 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 ':6242\b'lsof -nP -iTCP:6242 -sTCP:LISTENnetstat -ano | findstr :6242On 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 6242 — 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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