Overview of services running on Port 1801 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	Count	Percent
http		10441	37.639
irc	Dancer ircd	4046	14.585
http	SonicWALL	3734	13.461
chat	AIM or ICQ server	2213	7.978
no match	-/-	1382	4.982
http	lighttpd	900	3.244
ssl	SSLv3	871	3.14
http	AIM	615	2.217
http	Apache	370	1.334
http	WangWnagSimpleServer	289	1.042
http	Microsoft IIS httpd	252	0.908
http	Apache Tomcat/Coyote JSP engine	179	0.645
http	thttpd	150	0.541
telnet	Linux telnetd	136	0.49
ssh	OpenSSH	121	0.436
http	GoAhead-Webs httpd	101	0.364
http	Netwave IP camera http config	98	0.353
ssh		95	0.342
http	Microsoft HTTPAPI httpd	85	0.306
http	Avtech AVN801 network camera	63	0.227
http	Boa HTTPd	61	0.22
vnc	VNC	60	0.216
telnet		54	0.195
http	PDR-M800	53	0.191
http-proxy	Squid http proxy	47	0.169
ftp	Serv-U ftpd	41	0.148
http	Cross Web Server	40	0.144
ssl	TLS	37	0.133
http	mini_httpd	37	0.133
http	GoAhead-Webs	34	0.123
arcserve	ARCserve Discovery	33	0.119
ftp	Microsoft ftpd	31	0.112
nntp	INN nntpd	27	0.097
mysql	MySQL	27	0.097
flexlm	FlexLM license manager	26	0.094
http	uTorrent WebUI	24	0.087
rtsp		19	0.068
http	Mbedthis-Appweb	19	0.068
http	Hikvision-Webs	18	0.065
http	nginx	17	0.061
http	GeoVision GeoHttpServer for webcams	17	0.061
http	TwistedWeb httpd	16	0.058
http	Intoto httpd	16	0.058
upnp	Portable SDK for UPnP devices	15	0.054
http	uc-httpd	15	0.054
ftp	vsftpd	14	0.05
http-proxy	F5 BIG-IP load balancer http proxy	13	0.047
ftp		13	0.047
vnc	RealVNC Personal	12	0.043
http	CCcam card sharing system http config	12	0.043
ftp	Pure-FTPd	12	0.043
ftp	FileZilla ftpd	12	0.043
ftp	ProFTPD	11	0.04
ssl	Microsoft IIS SSL	10	0.036
smtp	Postfix smtpd	10	0.036
smtp		10	0.036
remoting	MS .NET Remoting services	10	0.036
http	RemotelyAnywhere remote PC management httpd	10	0.036
http	Gadspot/Avtech AV787 webcam http config	10	0.036