Overview of services running on Port 3333 TCP.
~74 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	Version	Count	Percent
no match	-/-	-/-	39919	53.23
eggdrop	Eggdrop IRC bot console	1.6.21	4847	6.463
irc	Dancer ircd		4057	5.41
eggdrop	Eggdrop IRC bot console	1.6.20	2496	3.328
chat	AIM or ICQ server		2309	3.079
http			1604	2.139
ssh	OpenSSH	4.3	1309	1.745
http	Microsoft IIS httpd		1086	1.448
http	Microsoft HTTPAPI httpd	2.0	800	1.067
eggdrop	Eggdrop irc bot console		628	0.837
http	Boa HTTPd	0.94.14rc21	565	0.753
http	lighttpd	1.4.19	472	0.629
http	lighttpd	1.4.29	427	0.569
vnc	VNC		412	0.549
mysql	MySQL		410	0.547
mysql	MySQL	5.5.25-cll	396	0.528
eggdrop	Eggdrop irc bot console	1.6.19+ctcpfix	365	0.487
http	Boa httpd		337	0.449
eggdrop	Eggdrop irc bot console	1.6.17	333	0.444
mysql	MySQL	3.23.57	313	0.417
eggdrop	Eggdrop irc bot console	1.6.18	273	0.364
eggdrop	Eggdrop irc bot console	1.6.19	267	0.356
http	GoAhead-Webs httpd		261	0.348
http-proxy	Fortech Proxy+ http admin	4.00 Build 402	257	0.343
ssh	Dropbear sshd	0.52	227	0.303
ftp			226	0.301
http	WangWnagSimpleServer	1.0	221	0.295
irc-proxy	psyBNC	2.3.2-7	217	0.289
http-proxy	Squid http proxy	2.7.STABLE8	187	0.249
ssh	OpenSSH	3.9p1	185	0.247
remoting	MS .NET Remoting services		180	0.24
ssl	TLS	1.0	178	0.237
telnet	utelnetd		174	0.232
http	Apache Tomcat/Coyote JSP engine	1.1	160	0.213
http-proxy	Squid http proxy	2.7.STABLE9	148	0.197
irc-proxy	psyBNC	2.3.1	147	0.196
http	thttpd	2.25b	144	0.192
openvpn	OpenVPN		143	0.191
http	thttpd	2.24	140	0.187
ssh	Dropbear sshd	0.51	138	0.184
http	thttpd		134	0.179
ftp	Microsoft ftpd		133	0.177
http	Boa HTTPd	0.94.13	129	0.172
ssh			128	0.171
http	WEBrick httpd	1.3.1	120	0.16
ssh	OpenSSH	5.1p1 Debian 5	115	0.153
ssh	OpenSSH	5.3	113	0.151
eggdrop	Eggdrop irc bot console	1.6.19+Gentoo	112	0.149
insight-manager	Consul InSight Manager		105	0.14
ssh	OpenSSH	5.5p1 Debian 6+squeeze2	102	0.136
directconnect	Direct Connect P2P		101	0.135
telnet			91	0.121
ssh	OpenSSH	5.3p1 Debian 3ubuntu7	85	0.113
ftp	vsftpd (before 2.0.8) or WU-FTPD		85	0.113
ssh	OpenSSH	5.9p1 Debian 5ubuntu1	84	0.112
http	Xymphony-WS		81	0.108
http	Apache	2.2.16	78	0.104
arcserve	ARCserve Discovery		78	0.104
mysql	MySQL	5.0.51b-community-nt	77	0.103
ssh	OpenSSH	5.8p1-hpn13v10	76	0.101
http-proxy	Squid http proxy	2.6.STABLE20	75	0.1
http	Virata-EmWeb	6.0.1	74	0.099
http	Hikvision-Webs		73	0.097
ftp	Pure-FTPd		72	0.096
http	lighttpd	1.4.26	69	0.092
ssh	OpenSSH	3.4p1	67	0.089
http	World Client WDaemon httpd	4.0	65	0.087
telnet	Linux telnetd		64	0.085
http-proxy	Squid http proxy	2.6.STABLE21	62	0.083
ssh	OpenSSH	2.3.0 mikrotik 2.9	60	0.08
http	Router		60	0.08
vnc	RealVNC Personal		59	0.079
telnet	foobar2000 remote control telnetd	1.0.2	59	0.079
svnserve	Subversion		58	0.077
beep			58	0.077
ssh	OpenSSH	3.6.1p2	57	0.076
ssh	MikroTik RouterOS sshd		57	0.076
netbios-ssn			56	0.075
rsync			55	0.073
http	TP-LINK Router		55	0.073
ssh	OpenSSH	5.5p1 Debian 6+squeeze1	54	0.072
ftp	vsftpd	2.0.8 or later	54	0.072
ssh	Force10 switch sshd		47	0.063
telnet	foobar2000 remote control telnetd	1.0.1	46	0.061
http	Boa HTTPd	0.94.14rc20	46	0.061
eggdrop	Eggdrop IRC bot console		45	0.06
http-proxy	MikroTik http proxy		44	0.059
eggdrop	Eggdrop irc bot console	1.6.19+SSL	43	0.057
vnc	RealVNC Enterprise		42	0.056
ssh	OpenSSH	5.8p1 Debian 7ubuntu1	42	0.056
http	http server 1.0		42	0.056
ssh	OpenSSH	5.4p1	41	0.055
http	Apache	2.2.3	40	0.053
ssh	OpenSSH	5.5	39	0.052
ssh	Cisco SSH	1.25	39	0.052
ssh	OpenSSH	5.6	38	0.051
ssh	OpenSSH	4.7p1 Debian 12	38	0.051
http	GeoVision GeoHttpServer for webcams		36	0.048
ssh	OpenSSH	5.1	35	0.047
http	Apache	2.0.55	35	0.047
mysql	MySQL	5.1.41-3ubuntu12	34	0.045
ssh	OpenSSH	5.8p2_hpn13v11	33	0.044
ssh	OpenSSH	5.2	32	0.043
smtp	Postfix smtpd		32	0.043
http	Apache	2.0.63	32	0.043
ftp	Serv-U ftpd	6.4	32	0.043
ssh	OpenSSH	5.8	31	0.041
http	lighttpd		31	0.041
http	Panasonic webcam http config		30	0.04
http	Cross Web Server		30	0.04
mysql	MySQL	5.0.51a-community-nt	29	0.039
http	webserver	1.0	29	0.039
nntp	INN nntpd		28	0.037
http-proxy	Squid http proxy	3.1.10	28	0.037
http	Microsoft IIS httpd	5.1	28	0.037
ftp	FileZilla ftpd	0.9.41 beta	28	0.037
upnp	Microsoft Windows UPnP		26	0.035
ssh	OpenSSH	5.5p1 Debian 6	26	0.035
http	thttpd	2.19-MX Jul 1 2010	26	0.035
smtp			25	0.033
http-proxy	Squid http proxy	3.2.0.8	25	0.033
http-proxy	Squid http proxy	2.6.STABLE12	25	0.033
http	Microsoft IIS httpd	5.0	25	0.033
xml			24	0.032
ssh	OpenSSH	5.8p1 Debian 1ubuntu3	24	0.032
ssh	Dropbear sshd	0.53.1	24	0.032
http	WYM httpd	1.0	24	0.032
http	lighttpd	1.4.20	24	0.032
dominoconsole	Lotus Domino Console		24	0.032
telnet	NewCS card sharing system telnetd		23	0.031
http	Linksys router http config		23	0.031
http	lighttpd	1.4.28	23	0.031
http	Apache	2.2.17	23	0.031
http	Apache	2.2.14	23	0.031
mysql	MySQL	5.1.45-enterprise-commercial-pro	22	0.029
http-proxy	Squid http proxy		22	0.029
ssh	OpenSSH	5.1p1	21	0.028
ssh	OpenSSH	4.3p2	21	0.028
ftp	FileZilla ftpd	0.9.40 beta	21	0.028
http	Boa HTTPd	0.94.11	20	0.027
http	Apache	2.2.9	20	0.027
ssh	Dropbear sshd	0.49	19	0.025
http	Ubicom	1.1	19	0.025
bandwidth-test	MikroTik bandwidth-test server		19	0.025
napster	WinMX or Lopster Napster P2P client		18	0.024
http	Apache	2.2.22	18	0.024
http-proxy	Squid http proxy	2.7.STABLE7	17	0.023
http	nginx		17	0.023
http	Microsoft ISA httpd		17	0.023
http	Jetty	8.0.y.z-SNAPSHOT	17	0.023
http	Apache	2.2.15	17	0.023
ssh	OpenSSH	6.0	16	0.021
socks5			16	0.021
smtp	Microsoft ESMTP	6.0.3790.4675	16	0.021
printer			16	0.021
mysql	MySQL	5.0.84	16	0.021
meterpreter	Metasploit meterpreter		16	0.021
http-proxy	Squid http proxy	2.7.STABLE3	16	0.021
http	Jetty	6.1.22	16	0.021
ssh	OpenSSH	5.9	15	0.02
ssh	OpenSSH	4.7p1 Debian 8ubuntu1.2	15	0.02
http	Digifort Enterprise 6.5 httpd		15	0.02
ftp	FileZilla ftpd	0.9.39 beta	15	0.02