2 entries are registered on port 9306. 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
2 of 2 iana-registered
| port | service | proto | category | risk | views |
|---|---|---|---|---|---|
| :9306 | Sphinx API | TCP | Web Services | caution | 5.1k |
| :9306 | SphinxQL | TCP | Databases | risk | 0 |
Port 9306 is commonly used by Sphinx Search, a popular open-source full-text search server, via its native binary protocol. This port facilitates communication between client applications and the Sphinx server for efficient, high-performance search queries across large datasets. The native API provides optimized indexing and retrieval, allowing developers to build scalable search features within websites or applications.
port 9306 as Sphinx API →SphinxQL provides a MySQL-protocol interface for querying a Sphinx Search index, normally on TCP port 9306.
port 9306 as SphinxQL →The registry says what 9306 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 ':9306\b'lsof -nP -iTCP:9306 -sTCP:LISTENnetstat -ano | findstr :9306On 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 9306 — 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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