Overview of services running on Port 2001 TCP.
~385 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
telnet	Cisco IOS telnetd	114931	29.812
telnet		76928	19.954
telnet	Cisco 1721 router telnetd	57323	14.869
no match	-/-	54231	14.067
http		14836	3.848
telnet	Cisco router telnetd	13512	3.505
http	lighttpd	8114	2.105
http	lf	4590	1.191
http	Apache	4258	1.104
irc	Dancer ircd	4094	1.062
http	SonicWALL	3943	1.023
chat	AIM or ICQ server	2612	0.678
http	RemotelyAnywhere remote PC management httpd	2403	0.623
http	Boa HTTPd	2024	0.525
ssl	SSLv3	1684	0.437
http	Microsoft IIS httpd	1146	0.297
http	thttpd	809	0.21
telnet	Pocket CMD telnetd	728	0.189
http	ConfSrv	713	0.185
ssh	OpenSSH	695	0.18
http	AIM	690	0.179
http	Netwave IP camera http config	552	0.143
irc-proxy	ShroudBNC irc-proxy	487	0.126
ftp	Ipswitch notification ftpd	431	0.112
http	Gateway-Webs	411	0.107
http	GoAhead-Webs httpd	392	0.102
http	Avtech AVN801 network camera	360	0.093
ftp	vsftpd	327	0.085
http	WangWnagSimpleServer	312	0.081
http	CordaServer	310	0.08
telnet	Linux telnetd	295	0.077
http	GoAhead-Webs embedded httpd	286	0.074
telnet	SMC SMC2870W Wireless Ethernet Bridge	284	0.074
ssl	TLSv1	238	0.062
vdr	VDR	232	0.06
ftp	Microsoft ftpd	229	0.059
vnc	RealVNC Personal	220	0.057
vnc		220	0.057
http	Microsoft HTTPAPI httpd	213	0.055
http	Apache Tomcat/Coyote JSP engine	206	0.053
http	mini_httpd	197	0.051
rtsp		194	0.05
ssh	Cisco SSH	169	0.044
http	uc-httpd	162	0.042
ftp	ProFTPD	152	0.039
http	GeoVision GeoHttpServer for webcams	150	0.039
http	webserver	149	0.039
vnc	VNC	148	0.038
http	Cross Web Server	146	0.038
telnet	corporate network!	141	0.037
ftp	vsftpd (before 2.0.8) or WU-FTPD	139	0.036
ftp	Serv-U ftpd	138	0.036
ssh	Dropbear sshd	132	0.034
remoting	MS .NET Remoting services	132	0.034
http	Hikvision-Webs	132	0.034
irc-proxy	psyBNC	131	0.034
telnet	ser2net telnetd	126	0.033
http-proxy	Squid http proxy	125	0.032
telnet	PE-4 Router	119	0.031
http	DrcomServer1.0	119	0.031
ssh		111	0.029
smtp	Postfix smtpd	107	0.028
http	GM Streaming Server httpd	106	0.027
http	dcs-lig-httpd	96	0.025
http	D-Link DIR-300 WAP http admin	95	0.025
http	PDR-M800	90	0.023
ftp		89	0.023
http	nginx	85	0.022
telnet	Frontier Internet *	82	0.021
ftp	FileZilla ftpd	82	0.021
ftp	MikroTik router ftpd	80	0.021
telnet	cisco router pgp-gw3.ccl.ru	79	0.02
rifa-dvr	Rifatron DVR	78	0.02
http	httpd	77	0.02
telnet	GW1-PWQ1.2day.kz	76	0.02
telnet	This Router	72	0.019
http	World Client WDaemon httpd	71	0.018
http	Mobotix Camera http config	68	0.018
http	Jetty	64	0.017
nbd	Network Block Device	63	0.016
telnet	Cisco 2514 router telnetd	59	0.015
ftp	Pure-FTPd	58	0.015
http	Mbedthis-Appweb	57	0.015
http	Gadspot/Avtech AV787 webcam http config	56	0.015
http	GoAhead-Webs	53	0.014
http	uTorrent WebUI	52	0.013
telnet	cisco router tusm-gw3.ccl.ru	50	0.013
http	Xitami httpd admin port	50	0.013
http	MiniServ	49	0.013
arcserve	ARCserve Discovery	49	0.013
http	DVR Systems webcam http interface	47	0.012
http	Httpd	45	0.012
http	Bchat	42	0.011
vnc	RealVNC Enterprise	41	0.011
http	Network Camera	40	0.01
http	Vivotek 3102 Camera http config	39	0.01
http	Monkey httpd	39	0.01
http	Gateway Controller 3560	39	0.01
upnp	Portable SDK for UPnP devices	38	0.01
socks5		38	0.01
http	Virata-EmWeb	38	0.01
mysql	MySQL	37	0.01
http	Vivotek IP7131 Network Camera http config	37	0.01
http	DD-WRT milli_httpd	37	0.01
ssl	TLS	36	0.009
http	IBM httpd	36	0.009
telnet	the Sirius Star System !	34	0.009
http	Wireless Network Camera	34	0.009
telnet	VPN-5 Router	32	0.008
http	Draytek Vigor ADSL router webadmin	31	0.008
http	WYM httpd	30	0.008
http	MultView WEB Server V1.1	30	0.008
http	Gateway Controller 3550	29	0.008
svnserve	Subversion	28	0.007
telnet	Openwall GNU/*/Linux telnetd	27	0.007
http	Foundry EdgeIron switch http config	26	0.007
dominoconsole	Lotus Domino Console	26	0.007
http	CCcam card sharing system http config	25	0.006
http	build-in http server	25	0.006
http	Airlink 101 or TRENDnet TVIP-422w webcam http config	25	0.006
shoutcast-publishing	SHOUTcast publishing port	24	0.006
http	D-Link/Airlink IP webcam http config	24	0.006
shoutcast	SHOUTcast server	22	0.006
mongodb	MongoDB	22	0.006
http	Zope httpd	22	0.006
smtp	OpenBSD spamd	21	0.005
smtp	Exim smtpd	21	0.005
http	TRENDnet TV-IP110w or TV-IP422W webcam display httpd	21	0.005
giop	CORBA naming service	21	0.005
directconnect	Direct Connect P2P	21	0.005
rtsp	Avtech MPEG4 DVR control rtspd	20	0.005
openvpn	OpenVPN	20	0.005
http	Rex media encoder http config	20	0.005
http	Allegro RomPager	20	0.005
telnet	PE-5 Router	19	0.005
xml		18	0.005
vnc-http	Ultr@VNC	18	0.005
telnet	the BCC terminal server	18	0.005
nntp	INN nntpd	18	0.005
telnet	Mulberry Co-op Telco ***	17	0.004
ovm-manager	Oracle VM Manager	17	0.004
meetingmaker	Meeting Maker calendaring	17	0.004
http	QNAP TS-219P NAS http config	17	0.004
http	MikroTik router http config	17	0.004
http	CherryPy httpd	17	0.004
telnet	the EmNet Ltd	16	0.004
telnet	cisco router pgp-gw6.ccl.ru	16	0.004
netbios-ssn		16	0.004
http	Vivotek Network Camera	16	0.004
http	uClinux-httpd	16	0.004
http	Thin	16	0.004
http	PopChart Pro	16	0.004
http	D-Link DCS-900 webcam http config	16	0.004
http	CordaServer (PopChartServer compatible) 5.1.2h	16	0.004
telnet	cisco router sovetskaia47b-gw1.ccl.ru	15	0.004
telnet	BSD-derived telnetd	15	0.004
smtp	Microsoft Exchange smtpd	15	0.004
http	WebServer	15	0.004
http-proxy	Haproxy http proxy	15	0.004
http	avtech httpd	15	0.004
printer	Panasonic mfpscdl.exe service	14	0.004
http	TwistedWeb httpd	14	0.004
http-proxy	F5 BIG-IP load balancer http proxy	14	0.004
http	LevelOne WCS-2030 webcam http config	14	0.004
http	JDav server 1.0	14	0.004
http	Intoto httpd	14	0.004
http	Indy	14	0.004
vnc-http	VNC Server Enterprise Edition httpd	13	0.003
telnet	EPIX Your Worldwide Internet Access	13	0.003
soap	gSOAP soap	13	0.003
smtp	Microsoft ESMTP	13	0.003
http	Sun ScApp bytecode transfer httpd	13	0.003
http	ise GmbH HTTP-Server v2.0	13	0.003
http	AIM HTTP	13	0.003
citrix-ica	Citrix Metaframe XP ICA	13	0.003
telnet	the Antares Star System !	12	0.003
telnet	First Link Technology, Inc.	12	0.003
smtp		12	0.003
http	MS-SDK-HttpServer	12	0.003
http	HiCommandDeviceManagerServer	12	0.003
http	D-Link DCS-920 webcam http config	12	0.003
http	AXIS 205 network camera web interface	12	0.003
vnc-http	RealVNC	11	0.003
telnet	Allied Telesis x900-series switch telnetd	11	0.003
spy-net	Spy-Net or CyberGate backdoor	11	0.003
sieve	Dovecot timsieved	11	0.003
http	TRENDnet TV-IP100 or TV-IP110 webcam display httpd	11	0.003
http	Techno Vision Security System http config	11	0.003
http-proxy	Ncat http proxy	11	0.003
http	NEC Electra Elite IPK II WebPro	11	0.003
http	HTTP Software 1.1	11	0.003
ftp	Gene6 ftpd	11	0.003
time		10	0.003
telnet	Mid-Rivers Internet. Unauthorized use prohibited and will be prosecuted!	10	0.003
telnet	cisco router mira102-gw2.ccl.ru	10	0.003
secure-socket	CA Secure Socket Adapter	10	0.003
http	WebLogic httpd	10	0.003
http	WebFS httpd	10	0.003
http	TP-LINK WR841N WAP http config	10	0.003
http	Oracle-iPlanet-Web-Server	10	0.003
http	HTTPServer	10	0.003
http	HTTPD 1.0	10	0.003
http	GS-Webs	10	0.003
http	Gateway Controller 3500	10	0.003
http	FlashCom	10	0.003
http	Embedded HTTP Server	10	0.003
http	D-Link DI-524 http config	10	0.003
http	D-Link DCS-5220 webcam http config	10	0.003
http	Caucho Resin JSP engine	10	0.003
http	Boa	10	0.003
ftp	Synology DiskStation NAS ftpd	10	0.003