Overview of services running on Port 4001 TCP.
~294 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
telnet	Cisco router telnetd				router	134780	45.763
no match						107633	36.545
http						12362	4.197
ftp	vsftpd	2.0.8 or later				7392	2.51
telnet	Cisco telnetd			IOS	router	4965	1.686
irc	Dancer ircd					4045	1.373
http	SonicWALL				firewall	3361	1.141
chat	AIM or ICQ server					2301	0.781
eggdrop	Eggdrop IRC bot console	1.6.21				2197	0.746
ssl	SSLv3					1742	0.591
donkey	MLDonkey multi-network P2P server					786	0.267
upnp	Portable SDK for UPnP devices	1.3.1	Linux 2.6.21; UPnP 1.0	Linux		716	0.243
http	lighttpd					688	0.234
http	AIM	1.0				562	0.191
http	SNF	0.1				423	0.144
http	lighttpd	1.4.29				419	0.142
http	lighttpd	1.4.19				408	0.139
mysql	MySQL	5.0.51a-24+lenny5-log				385	0.131
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		383	0.13
http	Microsoft IIS httpd	6.0		Windows		309	0.105
http	Netwave IP camera http config				webcam	242	0.082
irc-proxy	psyBNC	2.3.2-7				217	0.074
telnet						206	0.07
http	Microsoft IIS httpd					204	0.069
mysql	MySQL	4.1.18				191	0.065
http	Apache Tomcat/Coyote JSP engine	1.1				166	0.056
http	Boa HTTPd	0.94.14rc21				159	0.054
http	GoAhead-Webs httpd					141	0.048
http	wg_httpd	1.0(based Boa				135	0.046
ssh	OpenSSH	4.3	protocol 2.0			126	0.043
http	WangWnagSimpleServer	1.0				113	0.038
vnc	VNC		protocol 3.8			104	0.035
ftp	Microsoft ftpd			Windows		101	0.034
http	lighttpd	1.4.26				100	0.034
http	Mongrel httpd	1.1.5				98	0.033
remoting	MS .NET Remoting services					97	0.033
irc-proxy	psyBNC	2.3.2-4.6-EuShells.com				97	0.033
http	TBS	R2 UPnP				96	0.033
ssh			protocol 1.5			93	0.032
http	Avtech AVN801 network camera	1.0	UPnP 1.0		webcam	93	0.032
rtsp						81	0.028
http	OracleAS Web Cache 10g	9.0.4.0.0				81	0.028
oracle-tns	Oracle TNS Listener					80	0.027
http	Apache		SSL-only mode			75	0.025
http	Apache					73	0.025
ice	Internet Communications Engine					67	0.023
http	thttpd	2.24				65	0.022
http	Microsoft IIS httpd	7.5		Windows		65	0.022
http-proxy	EZproxy web proxy					64	0.022
http	Ubuntu	lucid UPnP				59	0.02
http	Secure Computing Sidewinder firewall http admin				firewall	59	0.02
http	PDR-M800	1.0				59	0.02
http	mini_httpd	1.19 19dec2003				56	0.019
http	Indy	10.0.52				54	0.018
secure-socket	CA Secure Socket Adapter					52	0.018
arcserve	ARCserve Discovery					52	0.018
ssl	TLSv1					51	0.017
http	Hikvision-Webs					50	0.017
http	thttpd	2.19-MX Sep 9 2010			WAP	49	0.017
http	Apache	2.2.13	(Unix) DAV/2 PHP/5.2.11			49	0.017
http	Thin	1.3.1	codename Triple Espresso			46	0.016
http	thttpd	2.25b				43	0.015
http	thttpd		Panasonic BB-HCM511 IP camera http config			39	0.013
vnc			protocol 3			36	0.012
http-proxy	Squid http proxy	2.7.STABLE9				36	0.012
http	Cisco IOS http config			IOS		36	0.012
http	Boa HTTPd	0.94.13				36	0.012
http	nginx	1.0.10	Phusion Passenger 3.0.11 (mod_rails/mod_rack)			35	0.012
http	uc-httpd	1.0.0				34	0.012
http	Microsoft IIS httpd	7.0		Windows		33	0.011
ftp						33	0.011
http	uTorrent WebUI			Windows		31	0.011
http	GeoVision GeoHttpServer for webcams				webcam	31	0.011
http	Boa HTTPd	0.93.15				30	0.01
http	Apache	2.2.3	(CentOS)			30	0.01
mysql	MySQL	5.0.96-log				29	0.01
http	Net-OS 5.xx UPnP	1.0				29	0.01
ssh			protocol 2.0			28	0.01
http	Jetty	8.0.y.z-SNAPSHOT				28	0.01
citrix-ica	Citrix Metaframe XP ICA			Windows		28	0.01
http	Cross Web Server					27	0.009
http			General User			26	0.009
http	Gadspot/Avtech AV787 webcam http config				webcam	26	0.009
vnc	VNC		protocol 3.6			25	0.008
http	WebFS httpd	1.21				25	0.008
http	thttpd					25	0.008
http-proxy	Squid http proxy	3.1.19				25	0.008
http	Microsoft IIS httpd	5.1		Windows		25	0.008
http	Mbedthis-Appweb	2.0.4				25	0.008
http	lighttpd	1.4.28				25	0.008
ssl	TLS	1.0				24	0.008
http	ImagiaTek		Network Card Manager			24	0.008
http	GoAhead-Webs					24	0.008
http	Apache	2.2.22	(Unix) mod_ssl/2.2.22 OpenSSL/1.0.0h; SSL-only mode			24	0.008
ericom	Ericom PowerTermWebConnect	1.0		Windows		24	0.008
bnetd	bnetd open source Blizzard Battlenet server					23	0.008
ssh	OpenSSH	5.1p1 Debian 5	protocol 2.0	Linux		22	0.007
http	Httpd	1.0				22	0.007
http	DVR Systems webcam http interface				webcam	22	0.007
upnp	Microsoft Windows UPnP			Windows		21	0.007
ssh	OpenSSH	5.3p1 Debian 3ubuntu7	Ubuntu Linux; protocol 2.0	Linux		21	0.007
vnc	RealVNC Personal		protocol 4.0			20	0.007
ssl	Microsoft IIS SSL			Windows		20	0.007
http	Microsoft IIS httpd	5.0		Windows		20	0.007
http	Apache	2.2.3				20	0.007