Overview of services running on Port 6699 TCP.
~27 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	Info	OS	Devicetype	Count	Percent
napster	WinMX or Lopster Napster P2P client					5225	18.87
http						3750	13.543
irc	Dancer ircd					3652	13.189
http	SonicWALL				firewall	3262	11.781
no match						1814	6.551
telnet	Cisco telnetd			IOS	router	1786	6.45
chat	AIM or ICQ server					1574	5.685
http	AIM	1.0				662	2.391
telnet						638	2.304
http	lighttpd	1.4.19				369	1.333
http	ZNC IRC bouncer http config	0.097 or later				242	0.874
http	thttpd	2.25b 29dec2003				239	0.863
http	Small Home Server httpd			Windows		195	0.704
http	Microsoft IIS httpd	6.0		Windows		187	0.675
http	lighttpd	1.4.29				180	0.65
irc-proxy	psyBNC	2.3.2-7				130	0.47
napster	MLDonkey multi-network P2P client					128	0.462
http	DrcomServer1.0					118	0.426
http	Apache Tomcat/Coyote JSP engine	1.1				89	0.321
http	GoAhead-Webs					81	0.293
ssh			protocol 1.5			76	0.274
http	thttpd	2.24 26oct2003				76	0.274
http	Avtech AVN801 network camera	1.0	UPnP 1.0		webcam	73	0.264
http	Microsoft IIS httpd	7.5		Windows		70	0.253
http	Netwave IP camera http config				webcam	66	0.238
http	Cross Web Server					57	0.206
http-proxy	CCProxy http proxy		unauthorized	Windows		54	0.195
http	PDR-M800	1.0				54	0.195
http	Apache					46	0.166
http	Boa HTTPd	0.94.14rc21				40	0.144
vnc	VNC		protocol 3.8			38	0.137
http	Microsoft IIS httpd	7.0		Windows		37	0.134
http	HTTPD 1.0		WayOS			34	0.123
http	mini_httpd	1.19 19dec2003				31	0.112
ssh	Dropbear sshd	0.51	protocol 2.0	Linux		30	0.108
http	Microsoft IIS httpd					29	0.105
http	Apache	2.2.3	(CentOS)			29	0.105
http	Apache		SSL-only mode			28	0.101
http-proxy	Squid http proxy					26	0.094
ssl	TLS	1.0				25	0.09
http	uTorrent WebUI			Windows		24	0.087
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		24	0.087
irc	Unreal ircd					23	0.083
ftp	Microsoft ftpd			Windows		23	0.083
http	uc-httpd	1.0.0				22	0.079
http-proxy	Microsoft Foundation Class httpd	1.0		Windows		22	0.079
http	Buffalo AirStation http config				WAP	21	0.076
http	Hikvision-Webs					20	0.072
http	DVR Systems webcam http interface				webcam	20	0.072