Overview of services running on Port 6660 TCP.
~35 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
socks5		12297	34.925
no match	-/-	8270	23.488
irc	Dancer ircd	4073	11.568
telnet	Cisco telnetd	1975	5.609
chat	AIM or ICQ server	1963	5.575
irc	Unreal ircd	1028	2.92
irc	InspIRCd	766	2.176
telnet		702	1.994
http	lighttpd	630	1.789
http		549	1.559
http	Microsoft IIS httpd	216	0.613
ssh	OpenSSH	174	0.494
http	Microsoft HTTPAPI httpd	143	0.406
http	thttpd	129	0.366
http	GoAhead-Webs httpd	98	0.278
ssh		95	0.27
vnc	VNC	80	0.227
http	Apache Tomcat/Coyote JSP engine	76	0.216
http	Boa HTTPd	73	0.207
http	Apache	70	0.199
irc	ircu ircd	57	0.162
http-proxy	Squid http proxy	55	0.156
irc		54	0.153
irc	IRCnet ircd	45	0.128
arcserve	ARCserve Discovery	41	0.116
http	GeoVision GeoHttpServer for webcams	39	0.111
ftp	Microsoft ftpd	34	0.097
mysql	MySQL	30	0.085
http	nginx	26	0.074
vnc		25	0.071
vnc	RealVNC Enterprise	22	0.062
irc	ratbox ircd	19	0.054
http	Hikvision-Webs	18	0.051
ftp		18	0.051
ftp	FileZilla ftpd	16	0.045
xml		15	0.043
ftp	Pure-FTPd	15	0.043
http	Jetty	13	0.037
ftp	ProFTPD	13	0.037
vnc	RealVNC Personal	12	0.034
upnp	Microsoft Windows UPnP	12	0.034
ssh	Dropbear sshd	12	0.034
smtp		12	0.034
telnet	Draytek Vigor ADSL router telnetd	11	0.031
teamspeak	TeamSpeak voice communication	11	0.031
http-proxy	F5 BIG-IP load balancer http proxy	11	0.031
http	http server 1.0	11	0.031
telnet	EPIX Your Worldwide Internet Access	10	0.028
ssl	TLS	10	0.028
smtp	Microsoft Exchange smtpd	10	0.028
ftp	vsftpd	10	0.028