Overview of services running on Port 6664 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
no match	-/-	18622	53.03
irc	Dancer ircd	4095	11.661
chat	AIM or ICQ server	2304	6.561
telnet	Cisco telnetd	2033	5.789
irc	Unreal ircd	1846	5.257
irc	InspIRCd	759	2.161
telnet		709	2.019
http	lighttpd	674	1.919
http		674	1.919
http	Boa HTTPd	349	0.994
http	Microsoft IIS httpd	213	0.607
http	thttpd	180	0.513
http	GoAhead-Webs httpd	152	0.433
ssh	OpenSSH	147	0.419
http	Microsoft HTTPAPI httpd	139	0.396
socks5		105	0.299
ssh		95	0.271
http	Apache Tomcat/Coyote JSP engine	89	0.253
http	Apache	81	0.231
vnc	VNC	77	0.219
http-proxy	Squid http proxy	76	0.216
irc		52	0.148
irc	IRCnet ircd	40	0.114
mysql	MySQL	39	0.111
irc	ircu ircd	38	0.108
http	Hikvision-Webs	35	0.1
ftp	Microsoft ftpd	30	0.085
irc	ratbox ircd	27	0.077
ftp		23	0.065
http	nginx	21	0.06
arcserve	ARCserve Discovery	20	0.057
http-proxy	MikroTik http proxy	19	0.054
ftp	FileZilla ftpd	18	0.051
upnp	Microsoft Windows UPnP	15	0.043
ftp	ProFTPD	15	0.043
telnet	Allied Telesis x900-series switch telnetd	14	0.04
smtp	Microsoft Exchange smtpd	14	0.04
http-proxy	F5 BIG-IP load balancer http proxy	14	0.04
http	http server 1.0	14	0.04
ssl	TLS	13	0.037
smtp		13	0.037
http	Jetty	13	0.037
http	GeoVision GeoHttpServer for webcams	13	0.037
ftp	Pure-FTPd	13	0.037
vnc	RealVNC Enterprise	12	0.034
irc-proxy	psyBNC	12	0.034
vnc	RealVNC Personal	11	0.031
vnc		11	0.031
smtp	Microsoft ESMTP	11	0.031
http	WebLogic httpd	11	0.031
telnet	EPIX Your Worldwide Internet Access	10	0.028
ftp	vsftpd	10	0.028