Overview of services running on Port 1998 TCP.
~26 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
http						9653	36.05
irc	Dancer ircd					4036	15.073
http	SonicWALL				firewall	3713	13.866
chat	AIM or ICQ server					2174	8.119
no match						1446	5.4
ssl	SSLv3					868	3.242
http	AIM	1.0				607	2.267
http	lighttpd	1.4.29				418	1.561
http	lighttpd	1.4.19				412	1.539
http	WangWnagSimpleServer	1.0				314	1.173
http	Microsoft IIS httpd	6.0		Windows		160	0.598
http	GoAhead-Webs httpd					113	0.422
http	Microsoft IIS httpd					112	0.418
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		96	0.359
ssh			protocol 1.5			92	0.344
http	Netwave IP camera http config				webcam	87	0.325
http	Apache Tomcat/Coyote JSP engine	1.1				87	0.325
http	Ipswitch IMail web service	8.15		Windows		67	0.25
http	thttpd	2.24				64	0.239
http	Avtech AVN801 network camera	1.0	UPnP 1.0		webcam	64	0.239
telnet						53	0.198
http	PDR-M800	1.0				52	0.194
vnc	VNC		protocol 3.8			42	0.157
http	Boa HTTPd	0.94.14rc21				41	0.153
http	Jetty	8.0.y.z-SNAPSHOT				38	0.142
http	Apache					38	0.142
arcserve	ARCserve Discovery					34	0.127
http	mini_httpd	1.19 19dec2003				28	0.105
ftp	Microsoft ftpd			Windows		28	0.105
nntp	INN nntpd		posting ok			27	0.101
http-proxy	Squid http proxy	2.7.STABLE9				24	0.09
http	thttpd	2.25b				23	0.086
http	thttpd	2.24 26oct2003				23	0.086
http	uTorrent WebUI			Windows		22	0.082
http	Hikvision-Webs					21	0.078