Overview of services running on Port 2306 TCP.
~24 Thousand 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
irc	Dancer ircd	3766	15.244
http	SonicWALL	3493	14.139
http		3320	13.439
mysql	MySQL	3062	12.395
chat	AIM or ICQ server	1536	6.218
telnet		1127	4.562
no match	-/-	1125	4.554
http	lighttpd	830	3.36
telnet	Cisco IOS telnetd	729	2.951
http-proxy	EZproxy web proxy	675	2.732
http	AIM	630	2.55
listserv	LISTSERV Administration service	607	2.457
http	Apache	379	1.534
http	Microsoft IIS httpd	294	1.19
telnet	Cisco 1721 router telnetd	191	0.773
http	WangWnagSimpleServer	156	0.631
http	Gateway-Webs	146	0.591
http	thttpd	128	0.518
http	GoAhead-Webs embedded httpd	123	0.498
http	DrcomServer1.0	119	0.482
http	GoAhead-Webs	93	0.376
ssh		88	0.356
http	Apache Tomcat/Coyote JSP engine	86	0.348
ssh	OpenSSH	85	0.344
http	Netwave IP camera http config	78	0.316
http	Avtech AVN801 network camera	73	0.295
http	Boa HTTPd	57	0.231
http	PDR-M800	49	0.198
vnc	VNC	44	0.178
nntp	INN nntpd	26	0.105
http	mini_httpd	26	0.105
ftp	Microsoft ftpd	26	0.105
upnp	Portable SDK for UPnP devices	24	0.097
http	uc-httpd	23	0.093
http	Hikvision-Webs	22	0.089
telnet	Cisco router telnetd	19	0.077
http	uTorrent WebUI	18	0.073
http	nginx	18	0.073
http	Gadspot/Avtech AV787 webcam http config	16	0.065
http	DVR Systems webcam http interface	16	0.065
http-proxy	Squid http proxy	15	0.061
http	GeoVision GeoHttpServer for webcams	15	0.061
smtp	Microsoft ESMTP	13	0.053
http-proxy	F5 BIG-IP load balancer http proxy	13	0.053
http	Cross Web Server	13	0.053
bittorrent	Bittorrent P2P client	13	0.053
http	RemotelyAnywhere remote PC management httpd	12	0.049
http	Microsoft HTTPAPI httpd	12	0.049
http	Mbedthis-Appweb	12	0.049
remoting	MS .NET Remoting services	11	0.045
ftp	vsftpd (before 2.0.8) or WU-FTPD	11	0.045
ftp	ProFTPD	10	0.04