2 entries are registered on port 351. It is a well-known port (0–1023) — assignments here are IANA's, and a service found on one is usually the service that was assigned it.
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 |
|---|---|---|---|---|---|
| :351 | MATIP-Type B | TCPUDP | Network Services | caution | 8.7k |
| :351 | bhoetty | TCPUDP | — | safe | 0 |
MATIP-Type B (Mapping of Airline Traffic over Internet Protocol) facilitates the transmission of traditional airline reservation and operational traffic over IP networks. It allows legacy airline proprietary protocols to be encapsulated and sent across TCP/IP or UDP/IP, enabling seamless integration with modern communication infrastructure while maintaining support for existing airline applications.
port 351 as MATIP-Type B →Bhoetty is an obscure, widespread-use assignment on TCP and UDP port 351.
port 351 as bhoetty →The registry says what 351 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 ':351\b'lsof -nP -iTCP:351 -sTCP:LISTENnetstat -ano | findstr :351On 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 351 — 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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