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	Version	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
ssl	SSLv3		871	3.14
http	AIM	1.0	615	2.217
http	lighttpd	1.4.29	442	1.593
http	lighttpd	1.4.19	420	1.514
http	WangWnagSimpleServer	1.0	289	1.042
http	Apache Tomcat/Coyote JSP engine	1.1	179	0.645
http	Microsoft IIS httpd	6.0	142	0.512
telnet	Linux telnetd		136	0.49
http	GoAhead-Webs httpd		101	0.364
http	Netwave IP camera http config		98	0.353
ssh			95	0.342
http	Microsoft HTTPAPI httpd	2.0	85	0.306
http	thttpd	2.24	68	0.245
http	Apache		65	0.234
http	Avtech AVN801 network camera	1.0	63	0.227
vnc	VNC		60	0.216
http	Microsoft IIS httpd		55	0.198
telnet			54	0.195
http	PDR-M800	1.0	53	0.191
http	Apache	2.2.3	43	0.155
http	Apache	2.2.14	42	0.151
http	Cross Web Server		40	0.144
http	Boa HTTPd	0.94.14rc21	39	0.141
ssl	TLS	1.0	37	0.133
http	mini_httpd	1.19 19dec2003	37	0.133
http	Apache	2.2.16	37	0.133
ftp	Serv-U ftpd	6.3	34	0.123
arcserve	ARCserve Discovery		33	0.119
ftp	Microsoft ftpd		30	0.108
nntp	INN nntpd		27	0.097
flexlm	FlexLM license manager		26	0.094
http	Apache	2.2.22	25	0.09
http	uTorrent WebUI		24	0.087
http	thttpd		24	0.087
http-proxy	Squid http proxy	2.7.STABLE9	24	0.087
http	GoAhead-Webs		23	0.083
http	thttpd	2.25b	21	0.076
ssh	OpenSSH	4.3	20	0.072
rtsp			19	0.068
http	Microsoft IIS httpd	7.5	19	0.068
http	Mbedthis-Appweb	2.0.4	19	0.068
http	Hikvision-Webs		18	0.065
http	GeoVision GeoHttpServer for webcams		17	0.061
http	TwistedWeb httpd	8.2.0	16	0.058
http	thttpd	2.24 26oct2003	16	0.058
http	Microsoft IIS httpd	5.1	16	0.058
http	Intoto httpd	1.0	16	0.058
http	Apache	2.2.15	16	0.058
upnp	Portable SDK for UPnP devices	1.3.1	15	0.054
http	uc-httpd	1.0.0	15	0.054