Overview of services running on Port 100 TCP.
~89 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	Count	Percent
http	lighttpd	1.4.28	16216	18.023
http	Mbedthis-Appweb	2.0.4	15221	16.917
http			12858	14.291
no match	-/-	-/-	5049	5.612
http	SonicWALL		3622	4.026
chat	AIM or ICQ server		2200	2.445
http	Netwave IP camera http config		1758	1.954
http	Avtech AVN801 network camera	1.0	1423	1.582
http	Realtron WebServer 1.1		1384	1.538
ssl	SSLv3		1171	1.302
http	Microsoft IIS httpd	6.0	1126	1.252
http	Cross Web Server		1109	1.233
ssh	OpenSSH	4.3	1075	1.195
http	mini_httpd	1.19 19dec2003	1040	1.156
http	WebServer		978	1.087
http	Apache	2.2.8	944	1.049
http	Microsoft IIS httpd		910	1.011
http	Microsoft HTTPAPI httpd	2.0	866	0.963
http	Boa HTTPd	0.94.13	857	0.953
http	Boa HTTPd	0.94.14rc21	679	0.755
http	AIM	1.0	608	0.676
http	Apache	2.2.9	585	0.65
http	GoAhead-Webs httpd		574	0.638
http	uc-httpd	1.0.0	550	0.611
http	thttpd	2.25b	491	0.546
arcserve	ARCserve Discovery		462	0.513
http	lighttpd	1.4.30	455	0.506
http	lighttpd	1.4.29	438	0.487
http	Apache	1.3.33	429	0.477
http	Hikvision-Webs		419	0.466
http	D-Link DIR-300 WAP http admin		407	0.452
http	lighttpd	1.4.19	405	0.45
http	GeoVision GeoHttpServer for webcams		380	0.422
http	thttpd		353	0.392
http	DVR Systems webcam http interface		339	0.377
http	Apache		294	0.327
http	OwnServer1.0		290	0.322
http	Gadspot/Avtech AV787 webcam http config		269	0.299
http	lighttpd	1.4.26	257	0.286
ice	Internet Communications Engine		254	0.282
http	PDR-M800	1.0	228	0.253
telnet			227	0.252
http	LevelOne FBR-FBR-1418TX router http config		225	0.25
telnet	Columbia		220	0.245
http	Apache	2.2.22	212	0.236
telnet	IP DSLAM		210	0.233
http	lighttpd		185	0.206
http	Apache Tomcat/Coyote JSP engine	1.1	185	0.206
http	Apache	1.3.41	160	0.178
socks5			154	0.171
http	thttpd	2.25b 29dec2003	148	0.164
http	WindWeb	2.0	147	0.163
http	nginx		142	0.158
ftp	Microsoft ftpd		139	0.154
vnc	VNC		134	0.149
http	Apache	2.2.16	133	0.148
http	Apache	2.2.14	130	0.144
http	Microsoft IIS httpd	7.5	125	0.139
http	Allegro RomPager	4.51 UPnP/1.0	124	0.138
ssh			115	0.128
ftp			115	0.128
http	Apache	2.2.3	112	0.124
http	TibetSystem Server 2.0		106	0.118
http	thttpd	2.24	103	0.114
ssh	MikroTik RouterOS sshd		95	0.106
http	Microsoft IIS httpd	5.1	92	0.102
http	Boa HTTPd	0.93.15	92	0.102
http	Apache	1.3.27	90	0.1
http	Draytek Vigor ADSL router webadmin		87	0.097
http	Microsoft IIS httpd	5.0	86	0.096
http	WYM httpd	1.0	85	0.094
http	GoAhead-Webs embedded httpd		84	0.093
telnet	QuickTel IP-DSLAM (QPIZZA4100)		80	0.089
ssh	Dropbear sshd	0.51	77	0.086
rtsp	Avtech MPEG4 DVR control rtspd		76	0.084
http	wg_httpd	1.0(based Boa	76	0.084
http	WebFS httpd	1.21	75	0.083
http	Microsoft IIS httpd	7.0	72	0.08
http	Apache	2.2.21	69	0.077
http	TwistedWeb httpd	8.2.0	68	0.076
http	Httpd	1.0	66	0.073
directconnect	Direct Connect P2P		65	0.072
http	Sagem F@st router httpd		64	0.071
http	Apache	2.2.17	63	0.07
http	SonicWALL firewall http config		62	0.069
http	MikroTik router http config		62	0.069
http	dcs-lig-httpd		58	0.064
printer	Panasonic mfpscdl.exe service		56	0.062
http	Everfocus webcam http config		55	0.061
http	Allegro RomPager	4.07 UPnP/1.0	54	0.06
http	TRENDnet TV-IP100 or TV-IP110 webcam display httpd		53	0.059
http	MWS	1.2.0	53	0.059
http	httpd		53	0.059
ftp	Serv-U ftpd	6.4	52	0.058
http	MiniServ	0.01	51	0.057
http	http server 1.0		50	0.056
http	ImagiaTek		45	0.05
http	Apache	2.2.11	45	0.05
http	Airlink 101 or TRENDnet TVIP-422w webcam http config		42	0.047
spy-net	Spy-Net or CyberGate backdoor		41	0.046
http-proxy	Squid http proxy	2.6.STABLE12	39	0.043
http	Allegro RomPager	4.03	39	0.043
http	Apache	2.2.4	38	0.042
telnet	MDSLAM-48		37	0.041
http	QNAP TS-219P NAS http config	1.0	37	0.041
http	MikroTik router config httpd		37	0.041
http	Apache	2.2.15	36	0.04
http	uTorrent WebUI		34	0.038
http	Microsoft ISA httpd		34	0.038
http	Xunlei BitTorrent http interface	1.0	33	0.037
http	TRENDnet TV-IP110w or TV-IP422W webcam display httpd		33	0.037
http	Techno Vision Security System http config	2.0	33	0.037
http	GoAhead-Webs		32	0.036
ssh	OpenSSH	3.9p1	31	0.034
http	Dreambox httpd		29	0.032
http	Apache	2.2.19	29	0.032
http	thttpd	2.24 26oct2003	28	0.031
http	lighttpd	1.4.20	28	0.031
http	Jetty	6.1.x	28	0.031
http	D-Link Internet Camera		28	0.031
http	Boa HTTPd	0.94.14rc18-ipcam	28	0.031
http	Apache	2.0.53	28	0.031
http	DD-WRT milli_httpd		27	0.03
ssh	OpenSSH	5.3p1 Debian 3ubuntu7	26	0.029
http-proxy	Squid http proxy	2.7.STABLE9	26	0.029
http	Milestone XProtect video surveillance http interface		26	0.029
http	Apache	2.2.13	26	0.029
http	ADH-Web httpd		26	0.029
ftp	vsftpd	2.0.8 or later	26	0.029
http	D-Link/Airlink IP webcam http config	1.0	25	0.028
vnc	RealVNC Personal		24	0.027
http	W3MFC	1.68	24	0.027
http	Router		24	0.027
http	httpd 1.1		24	0.027
http	MS-SDK-HttpServer	1.0	23	0.026
http	Lantronix XPort embedded ethernet http config		23	0.026
ssh	OpenSSH	5.3	22	0.024
ssh	OpenSSH	5.2	22	0.024
smtp			22	0.024
http	Vivotek Network Camera		22	0.024
http	TP-LINK Router		22	0.024
http	MiniServ	1.580	22	0.024
http	Microsoft Windows Media Server	9.01.01.5001	22	0.024
http	Dbox2 Neutrino httpd		22	0.024
http	Apache	2.2.6	22	0.024
ssh	OpenSSH	5.1p1 Debian 5	21	0.023
vnc			20	0.022
http	WebLogic httpd		20	0.022
http	thttpd	2.23beta1	20	0.022
http	thttpd	2.19-MX Jul 1 2010	20	0.022
http	HTTP Software 1.1		20	0.022
http	American Dynamics EDVR security recorder		20	0.022
ftp	FileZilla ftpd	0.9.40 beta	20	0.022
ssh	OpenSSH	5.5p1 Debian 6+squeeze2	19	0.021
http	Router Webserver		19	0.021
http	Panasonic webcam http config		19	0.021
http	dvr1614n web-cam httpd		19	0.021
http	BlueIris	1.1	19	0.021
ssh	Dropbear sshd	0.52	18	0.02
http	XWeb 1.0		18	0.02
http	TP-LINK WR741N WAP http config		18	0.02
http	SkiftaServer	1.1.1	18	0.02
http	Serverdoc remote httpd		18	0.02
http	Bosch Divar Security Systems http config		18	0.02
http	Apache	0.6.5	18	0.02
ftp	Pure-FTPd		18	0.02
xml			17	0.019
ssh	OpenSSH	5.1p1	17	0.019
ssh	OpenSSH	2.3.0 mikrotik 2.9	17	0.019
http	Webs		17	0.019
http	Netgear DG834G router http config		17	0.019
http	lighttpd	1.4.13	17	0.019
http	D-Link DCS-920 webcam http config		17	0.019
telnet	SMC SMC2870W Wireless Ethernet Bridge		16	0.018
telnet	Linux telnetd		16	0.018
smtp	Microsoft Exchange smtpd		16	0.018
http	nginx	0.8.54	16	0.018
http	Kerio MailServer http config		16	0.018
http	Jetty	6.1.17	16	0.018
http	HTTPsrv		16	0.018
http	Apache	2.2.20	16	0.018
http	Apache	1.3.31	16	0.018
upnp	Conexant-EmWeb	6.1.0	15	0.017
http	WebServer(IPCamera_Logo)		15	0.017
http	Intoto httpd	1.0	15	0.017
http	FlexWATCH-Webs		15	0.017