Overview of services running on Port 2003 TCP.
~54 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						11592	21.238
no match						7398	13.554
telnet	Cisco IOS telnetd			IOS	switch	4341	7.953
telnet						4309	7.895
irc	Dancer ircd					4054	7.427
http	SonicWALL				firewall	3703	6.784
chat	AIM or ICQ server					2220	4.067
telnet	Cisco 1721 router telnetd			IOS	router	1767	3.237
ssl	SSLv3					1606	2.942
telnet	SMC SMC2870W Wireless Ethernet Bridge				bridge	1586	2.906
telnet	Cisco router telnetd			IOS	router	1141	2.09
http	AIM	1.0				600	1.099
telnet			Usually a Cisco/3com switch	IOS	switch	516	0.945
irc-proxy	ShroudBNC irc-proxy	1.1 revision 371				446	0.817
http	lighttpd	1.4.29				428	0.784
http	lighttpd	1.4.19				411	0.753
http	Microsoft IIS httpd	6.0		Windows		306	0.561
telnet	Linux telnetd			Linux		295	0.54
http	GoAhead-Webs httpd					292	0.535
http	Boa HTTPd	0.94.14rc21				285	0.522
ftp	vsftpd	2.0.8 or later				268	0.491
http	lighttpd	1.4.28				256	0.469
http	Microsoft IIS httpd					249	0.456
http	WangWnagSimpleServer	1.0				218	0.399
http	Apache	2.2.3	(CentOS)			207	0.379
http	Netwave IP camera http config				webcam	185	0.339
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		182	0.333
http	MiniServ	0.01	Webmin httpd			157	0.288
http	Gateway-Webs					138	0.253
irc-proxy	psyBNC	2.3.2-9				110	0.202
http	Apache Tomcat/Coyote JSP engine	1.1				99	0.181
http	RemotelyAnywhere remote PC management httpd	8.0.668				97	0.178
ssh			protocol 1.5			95	0.174
ftp	Microsoft ftpd			Windows		91	0.167
http	Apache	2.2.14 (Unix) mod_ssl				85	0.156
http	Avtech AVN801 network camera	1.0	UPnP 1.0		webcam	81	0.148
http	thttpd	2.25b				80	0.147
http	Apache					73	0.134
http	thttpd	2.24				72	0.132
http	TP-LINK WR543G WAP http config				WAP	68	0.125
http	thttpd		Panasonic BB-HCM511 IP camera http config			68	0.125
ssh	OpenSSH	4.3	protocol 2.0			66	0.121
remoting	MS .NET Remoting services					62	0.114
ssl	TLS	1.0				57	0.104
http	RemotelyAnywhere remote PC management httpd	10.0.1086				57	0.104
directconnect	Direct Connect P2P			Windows		54	0.099
http	MikroTik router config httpd			RouterOS	router	52	0.095
vnc	VNC		protocol 3.8			51	0.093
http	Apache		SSL-only mode			51	0.093
http	Boa HTTPd	0.94.13				50	0.092
http	Apache	0.6.5				50	0.092
http-proxy	Squid http proxy					48	0.088
http	PDR-M800	1.0				48	0.088
rtsp						43	0.079
http	GoAhead-Webs embedded httpd					43	0.079
http	RemotelyAnywhere remote PC management httpd	8.0.747				42	0.077
http	Hikvision-Webs					39	0.071
ssh	Dropbear sshd	0.48	protocol 2.0	Linux		38	0.07
http	RemotelyAnywhere remote PC management httpd	8.0.605				38	0.07
http	mini_httpd	1.19 19dec2003				38	0.07
http	Apache	2.2.3				38	0.07
ssh	Cisco SSH	1.25	protocol 2.0	IOS		36	0.066
arcserve	ARCserve Discovery					36	0.066
http	Microsoft IIS httpd	7.5		Windows		35	0.064
xml						33	0.06
telnet	Cisco 2514 router telnetd			IOS	router	31	0.057
http	uTorrent WebUI			Windows		31	0.057
ssh	OpenSSH	5.3	protocol 2.0			30	0.055
ssl	TLSv1					29	0.053
nntp	INN nntpd		posting ok			28	0.051
http	lighttpd	1.4.20				28	0.051
http			General User			28	0.051
http	Apache	2.2.14	(Fedora)			28	0.051
http-proxy	Squid http proxy	2.7.STABLE9				26	0.048
http	dcs-lig-httpd					25	0.046
http	lighttpd	1.4.26				24	0.044
http	Cross Web Server					24	0.044
ftp						24	0.044
lmtp	Cyrus lmtpd Murder	2.3.15				23	0.042
http	thttpd					23	0.042
http	RemotelyAnywhere remote PC management httpd	8.0.597				23	0.042
http	Apache	2.2.15	(CentOS)			23	0.042
ssh	OpenSSH	3.9p1	protocol 2.0			22	0.04
http	Mbedthis-Appweb	2.0.4				22	0.04
http	thttpd	2.25b 29dec2003				21	0.038
http	MiniServ	1.550	Webmin httpd			21	0.038
http	GeoVision GeoHttpServer for webcams				webcam	21	0.038
geovision-audio	Geovision webcam audio				webcam	21	0.038
http	thttpd	2.24 26oct2003				20	0.037
http	Microsoft IIS httpd	7.0		Windows		20	0.037
http	GoAhead-Webs httpd		Ovislink WAP http config		WAP	20	0.037