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	Version	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			674	1.919
http	lighttpd	1.4.19	426	1.213
http	Boa HTTPd	0.93.15	272	0.775
http	Microsoft IIS httpd		212	0.604
http	lighttpd	1.4.29	198	0.564
http	GoAhead-Webs httpd		152	0.433
http	Microsoft HTTPAPI httpd	2.0	139	0.396
http	thttpd	2.24	110	0.313
socks5			105	0.299
ssh			95	0.271
http	Apache Tomcat/Coyote JSP engine	1.1	89	0.253
vnc	VNC		77	0.219
irc			52	0.148
http	Boa HTTPd	0.94.14rc21	52	0.148
irc	IRCnet ircd		40	0.114
irc	ircu ircd		38	0.108
http	Hikvision-Webs		35	0.1
http	thttpd	2.25b	31	0.088
http-proxy	Squid http proxy	2.7.STABLE9	29	0.083
ftp	Microsoft ftpd		29	0.083
irc	ratbox ircd		27	0.077
http	thttpd		27	0.077
http-proxy	Squid http proxy	2.6.STABLE12	26	0.074
ftp			23	0.065
ssh	OpenSSH	4.3	21	0.06
arcserve	ARCserve Discovery		20	0.057
http-proxy	MikroTik http proxy		19	0.054
http	Apache	2.2.3	19	0.054
http	Boa HTTPd	0.94.13	17	0.048
http	lighttpd		16	0.046
upnp	Microsoft Windows UPnP		15	0.043
http	lighttpd	1.4.20	15	0.043