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	Count	Percent
http		11643	21.33
no match	-/-	7398	13.553
telnet		4825	8.839
telnet	Cisco IOS telnetd	4341	7.953
irc	Dancer ircd	4054	7.427
http	SonicWALL	3703	6.784
chat	AIM or ICQ server	2220	4.067
telnet	Cisco 1721 router telnetd	1767	3.237
ssl	SSLv3	1606	2.942
telnet	SMC SMC2870W Wireless Ethernet Bridge	1586	2.906
http	lighttpd	1173	2.149
telnet	Cisco router telnetd	1141	2.09
http	Apache	1018	1.865
http	Microsoft IIS httpd	643	1.178
http	AIM	600	1.099
irc-proxy	ShroudBNC irc-proxy	446	0.817
http	thttpd	388	0.711
http	Boa HTTPd	370	0.678
http	RemotelyAnywhere remote PC management httpd	327	0.599
http	GoAhead-Webs httpd	322	0.59
ssh	OpenSSH	300	0.55
telnet	Linux telnetd	295	0.54
ftp	vsftpd	269	0.493
http	WangWnagSimpleServer	218	0.399
http	Microsoft HTTPAPI httpd	190	0.348
http	Netwave IP camera http config	185	0.339
http	MiniServ	179	0.328
http	Gateway-Webs	138	0.253
irc-proxy	psyBNC	113	0.207
ftp	Microsoft ftpd	104	0.191
http-proxy	Squid http proxy	103	0.189
http	Apache Tomcat/Coyote JSP engine	102	0.187
ssh		98	0.18
http	Avtech AVN801 network camera	81	0.148
ssh	Cisco SSH	73	0.134
vnc	VNC	69	0.126
http	TP-LINK WR543G WAP http config	68	0.125
remoting	MS .NET Remoting services	62	0.114
ssl	TLS	57	0.104
lmtp	Cyrus Imap Daemon lmtpd	55	0.101
directconnect	Direct Connect P2P	54	0.099
ssh	Dropbear sshd	52	0.095
http	MikroTik router config httpd	52	0.095
http	PDR-M800	48	0.088
ftp	Serv-U ftpd	47	0.086
rtsp		43	0.079
http	GoAhead-Webs embedded httpd	43	0.079
http	mini_httpd	42	0.077
http	Hikvision-Webs	39	0.071
arcserve	ARCserve Discovery	36	0.066
xml		33	0.06
lmtp	Cyrus lmtpd Murder	33	0.06
telnet	Cisco 2514 router telnetd	31	0.057
http	uTorrent WebUI	31	0.057
ssl	TLSv1	29	0.053
nntp	INN nntpd	28	0.051
ftp	ProFTPD	27	0.049
http	Mbedthis-Appweb	26	0.048
http	nginx	25	0.046
http	dcs-lig-httpd	25	0.046
http	Cross Web Server	24	0.044
ftp		24	0.044
mysql	MySQL	22	0.04
http	GeoVision GeoHttpServer for webcams	21	0.038
geovision-audio	Geovision webcam audio	21	0.038
ftp	FileZilla ftpd	20	0.037
upnp	Portable SDK for UPnP devices	19	0.035
http	uc-httpd	19	0.035
http	GoAhead-Webs	19	0.035
ftp	Pure-FTPd	18	0.033
telnet	Draytek Vigor ADSL router telnetd	17	0.031
http	Mobotix Camera http config	17	0.031
telnet	Frontier Internet *	16	0.029
ice	Internet Communications Engine	16	0.029
http	Vivotek Network Camera http config	16	0.029
http	Network Camera	15	0.027
http	Jetty	15	0.027
http	GM Streaming Server httpd	15	0.027
http	D-Link/Airlink IP webcam http config	15	0.027
http	Bchat	15	0.027
vnc	RealVNC Personal	14	0.026
telnet	the BCC terminal server	14	0.026
http	Vivotek IP7131 Network Camera http config	14	0.026
http	Gadspot/Avtech AV787 webcam http config	14	0.026
http	Allegro RomPager	14	0.026
vnc	RealVNC Enterprise	13	0.024
http-proxy	F5 BIG-IP load balancer http proxy	13	0.024
http	Indy	13	0.024
http	AIM HTTP	13	0.024
smtp	Microsoft ESMTP	12	0.022
java-rmi	Java RMI	12	0.022
telnet	Allied Telesis x900-series switch telnetd	11	0.02
ssl	Microsoft IIS SSL	10	0.018
smtp		10	0.018
http	WYM httpd	10	0.018
http	World Client WDaemon httpd	10	0.018
citrix-ica	Citrix Metaframe XP ICA	10	0.018