Port 9306SphinxQL

SphinxQL provides a MySQL-protocol interface for querying a Sphinx Search index, normally on TCP port 9306.

transport: tcp
in transit: cleartext
assignment: official
risk: 7/10
lookups: 0

also known as Sphinx Search MySQL listener, mysql41

1 other service is registered on port 9306. compare all 2 →

Technical Details

what runs on :9306

SphinxQL is a SQL-like query interface spoken over the MySQL client/server protocol, usually on TCP port 9306. A client receives a MySQL-compatible handshake, then sends commands and receives MySQL-style result sets; this is not a general-purpose MySQL server. The listener is commonly configured as mysql41 in Sphinx’s searchd configuration. Sphinx’s native API commonly uses TCP 9312, a separate listener. Traffic is unencrypted by default.

Security Information

exposure of :9306

risk score

7/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

databases averages 3.8 across 164 ports — this one sits 3.2 above.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp

every listening transport is another surface to filter at the edge

security overview

An exposed listener can let remote clients query indexed content and may allow administrative SphinxQL operations, depending on the version and configuration. Do not expose it directly to the internet: restrict it to trusted hosts with firewall rules or a private network, since the interface is not a substitute for a secured database service and traffic is cleartext by default.

Record

iana registry entry

port: :9306
service: SphinxQL
transport: TCP
encryption: cleartext
assignment: iana registered
risk: 7/10risk
category: Databases
usage: Sphinx Search’s `searchd` daemon commonly listens on TCP 9306 for SphinxQL clients, including MySQL-compatible tools and application libraries. It is typically bound to localhost or a private network; the registered assignment is for the Sphinx search server’s MySQL listener.
lookups: 0rank 993
added: 2026-10-15
updated: 2026-10-15
references: IANA service name registry — port 9306

Something wrong?

This record is maintained by the engineers who use port 9306. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-15.

01edit any field on a page of its own
02a model checks it for accuracy and spam
03clean and confident goes live immediately

edit this record →back to the registry

Related Ports

all 164 in databases →

the 8 most looked-up other ports in databases — 164 ports carry that label.

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:2484	Oracle SSL Listener	TCPUDPtls	Security	caution	25.0k
:5495	Applix TM1 Admin	TCP	Databases	caution	24.8k
:591	FileMaker Web Sharing	TCP	Web Services	caution	23.1k
:1521	Oracle TNS Listener	TCP	Security	caution	19.6k
:21001	AMLFilter Admin	TCP	Security	caution	19.2k
:18206	Audition FAM DB	TCPUDP	Databases	caution	19.1k

risk mix of the 8 listed

caution100%

1 of 8 encrypted

Port :9306SphinxQL

Technical Details

Security Information

Related Ports

Port 9306SphinxQL