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	Count	Percent
napster	WinMX or Lopster Napster P2P client		5225	18.87
http			3777	13.641
irc	Dancer ircd		3652	13.189
http	SonicWALL		3262	11.781
no match	-/-	-/-	1814	6.551
telnet	Cisco telnetd		1786	6.45
chat	AIM or ICQ server		1574	5.685
http	AIM	1.0	662	2.391
telnet			639	2.308
http	lighttpd	1.4.19	370	1.336
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		195	0.704
http	Microsoft IIS httpd	6.0	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	93	0.336
http	GoAhead-Webs		81	0.293
ssh			78	0.282
http	thttpd	2.24 26oct2003	76	0.274
http	Apache		75	0.271
http	Avtech AVN801 network camera	1.0	73	0.264
http	Microsoft IIS httpd	7.5	70	0.253
http	Netwave IP camera http config		66	0.238
http	Cross Web Server		57	0.206
http-proxy	CCProxy http proxy		54	0.195
http	PDR-M800	1.0	54	0.195
vnc	VNC		47	0.17
http	Apache	2.2.3	41	0.148
http	Apache	2.2.14	41	0.148
http	Boa HTTPd	0.94.14rc21	40	0.144
http	Microsoft IIS httpd	7.0	37	0.134
http	HTTPD 1.0		36	0.13
http	Apache	2.2.22	32	0.116
http	mini_httpd	1.19 19dec2003	31	0.112
ssh	Dropbear sshd	0.51	30	0.108
http	Microsoft IIS httpd		30	0.108
http-proxy	Squid http proxy		26	0.094
ssl	TLS	1.0	25	0.09
http	uTorrent WebUI		24	0.087
http	Microsoft HTTPAPI httpd	2.0	24	0.087
http	Apache	2.2.16	24	0.087
irc	Unreal ircd		23	0.083
ftp	Microsoft ftpd		23	0.083
http	uc-httpd	1.0.0	22	0.079
http-proxy	Microsoft Foundation Class httpd	1.0	22	0.079
http	Buffalo AirStation http config		21	0.076
http	Hikvision-Webs		20	0.072
http	DVR Systems webcam http interface		20	0.072
http	GeoVision GeoHttpServer for webcams		19	0.069
http	Apache	2.2.9	19	0.069
moneyworks	MoneyWorks accounting software		18	0.065
http	Microsoft IIS httpd	5.1	17	0.061
http	Apache	2.0.53	17	0.061
ftp	Serv-U ftpd	6.4	17	0.061
ssh	OpenSSH	4.3	16	0.058
http	Gadspot/Avtech AV787 webcam http config		16	0.058
http	D-Link DIR-300 WAP http admin		16	0.058
http	Apache	2.2.15	16	0.058
ftp			16	0.058
http	Mbedthis-Appweb	2.0.4	15	0.054
http	httpd		15	0.054
http	Apache	1.3.28	15	0.054
directconnect	Direct Connect P2P		15	0.054