Overview of services running on Port 3306 TCP.
~3.01 Million IP addresses observed from May to December 2012
To get raw lists of the data go to Download. For an explanation of what this data is and how it was obtained, see Paper.

Servicename	Product	Count	Percent
mysql	MySQL	2966321	98.433
no match	-/-	14086	0.467
http		12049	0.4
http	SonicWALL	4277	0.142
irc	Dancer ircd	4087	0.136
chat	AIM or ICQ server	2295	0.076
http-proxy	Squid http proxy	1083	0.036
http	Apache	1078	0.036
http	lighttpd	948	0.031
ssl	SSLv3	901	0.03
http	AIM	723	0.024
tcpwrapped	BSD TCP Wrappers	516	0.017
http	Microsoft IIS httpd	486	0.016
upnp	Portable SDK for UPnP devices	430	0.014
http	TBS	217	0.007
http	thttpd	207	0.007
http	WangWnagSimpleServer	181	0.006
ssh	OpenSSH	171	0.006
http-proxy	EZproxy web proxy	165	0.005
http	Apache Tomcat/Coyote JSP engine	159	0.005
http	Netwave IP camera http config	155	0.005
http	Avtech AVN801 network camera	120	0.004
http	GoAhead-Webs httpd	109	0.004
ssh		104	0.003
http	Ubuntu	104	0.003
http	DrcomServer1.0	103	0.003
http	Boa HTTPd	103	0.003
vnc	VNC	79	0.003
telnet	Linux telnetd	79	0.003
http	PDR-M800	77	0.003
http	Microsoft HTTPAPI httpd	71	0.002
http	mini_httpd	69	0.002
arcserve	ARCserve Discovery	69	0.002
telnet		58	0.002
http	uc-httpd	52	0.002
http	uTorrent WebUI	49	0.002
http	Allegro RomPager	45	0.001
http	nginx	44	0.001
ftp	Microsoft ftpd	42	0.001
smtp	Postfix smtpd	31	0.001
http	GoAhead-Webs	31	0.001
http	Hikvision-Webs	29	0.001
ftp	FileZilla ftpd	29	0.001
nntp	INN nntpd	28	0.001
http	DD-WRT milli_httpd	28	0.001
ftp	Serv-U ftpd	26	0.001
http	Mbedthis-Appweb	25	0.001
http	GeoVision GeoHttpServer for webcams	25	0.001
http	FC	24	0.001
http	Cross Web Server	24	0.001
http	Jetty	23	0.001
http	Net-OS 5.xx UPnP	22	0.001
http	AIM HTTP	22	0.001
smtp		21	0.001
http	Gadspot/Avtech AV787 webcam http config	20	0.001
http	DVR Systems webcam http interface	20	0.001
http	Httpd	19	0.001
ftp		18	0.001
http	GoAhead-Webs embedded httpd	17	0.001
ftp	Pure-FTPd	17	0.001
http-proxy	F5 BIG-IP load balancer http proxy	16	0.001
http	MikroTik router config httpd	16	0.001
ftp	vsftpd	16	0.001
ftp	ProFTPD	16	0.001
vnc	RealVNC Enterprise	15	0.0
ssl	TLS	15	0.0
smtp	Microsoft Exchange smtpd	15	0.0
vnc	RealVNC Personal	14	0.0
http-proxy	MikroTik http proxy	14	0.0
http	Datum	14	0.0
vnc		13	0.0
smtp	Microsoft ESMTP	13	0.0
http	RemotelyAnywhere remote PC management httpd	13	0.0
http	QNAP TS-219P NAS http config	12	0.0
http-proxy	CCProxy http proxy	12	0.0
ssh	Dropbear sshd	11	0.0
http	World Client WDaemon httpd	11	0.0
http	LuCI Lua http config	11	0.0
telnet	Allied Telesis x900-series switch telnetd	10	0.0
ssl	Microsoft IIS SSL	10	0.0
openvpn	OpenVPN	10	0.0
http	MikroTik router http config	10	0.0
http	iSpy	10	0.0
http	Indy	10	0.0
directconnect	Direct Connect P2P	10	0.0