2 entries are registered on port 4007. 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
1 of 2 iana-registered
| port | service | proto | category | risk | views |
|---|---|---|---|---|---|
| :4007 | PrintBuzzer Socket Server | TCP | Network Services | caution | 8.2k |
| :4007 | pxc-splr | TCPUDP | — | safe | 0 |
PrintBuzzer runs a network socket server on port 4007 designed to monitor, control, and remotely manage printer jobs across an organization. It facilitates real-time status updates, device health checks, and streamlined printer fleet management, enabling administrators to oversee multiple printers efficiently.
port 4007 as PrintBuzzer Socket Server →pxc-splr is an IANA-registered service assigned to TCP and UDP port 4007.
port 4007 as pxc-splr →The registry says what 4007 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 ':4007\b'lsof -nP -iTCP:4007 -sTCP:LISTENnetstat -ano | findstr :4007On 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 4007 — 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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