Overview of services running on Port 83 TCP.
~160 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		30535	19.059
http	Apache	18950	11.828
http	Microsoft IIS httpd	13727	8.568
http	Netwave webcam http config	6404	3.997
http	Netwave IP camera http config	5819	3.632
http	thttpd	5393	3.366
http	Boa HTTPd	4669	2.914
irc	Dancer ircd	4086	2.55
http	SonicWALL	4030	2.515
http	lighttpd	3623	2.261
http	Hikvision-Webs	3516	2.195
http	GoAhead-Webs httpd	3461	2.16
no match	-/-	2916	1.82
http	uc-httpd	2740	1.71
http	Avtech AVN801 network camera	2583	1.612
chat	AIM or ICQ server	2403	1.5
http	mini_httpd	2320	1.448
http	Boa httpd	1948	1.216
http	nginx	1613	1.007
http	GeoVision GeoHttpServer for webcams	1492	0.931
http	Cdn Cache Server V2.0	1351	0.843
http	Cross Web Server	1284	0.801
http	dcs-lig-httpd	1181	0.737
http	D-Link/Airlink IP webcam http config	1161	0.725
http	Apache Tomcat/Coyote JSP engine	1056	0.659
http	GoAhead-Webs embedded httpd	999	0.624
http	Microsoft HTTPAPI httpd	900	0.562
http	Linux	818	0.511
http	BusyBox httpd	815	0.509
http	D-Link DIR-300 WAP http admin	793	0.495
http	webserver	726	0.453
http	AIM	713	0.445
http	Airlink 101 or TRENDnet TVIP-422w webcam http config	674	0.421
http	TRENDnet TV-IP100 or TV-IP110 webcam display httpd	648	0.404
http	WindWeb	645	0.403
http	Mbedthis-Appweb	625	0.39
http	WebServer(IPCamera_Logo)	538	0.336
http	Allegro RomPager	536	0.335
http	DVR Systems webcam http interface	445	0.278
http	MikroTik router http config	417	0.26
http-proxy	Squid http proxy	400	0.25
http	Gadspot/Avtech AV787 webcam http config	341	0.213
http	Boa	334	0.208
arcserve	ARCserve Discovery	323	0.202
http	MikroTik router config httpd	306	0.191
http	TwistedWeb httpd	304	0.19
http	D-Link DCS-920 webcam http config	302	0.188
http	D-Link Internet Camera	301	0.188
http	DrayTek Vigor 2800-series ADSL router httpd	290	0.181
http	Dart WebServer Tool	279	0.174
http	TRENDnet TV-IP110w or TV-IP422W webcam display httpd	278	0.174
http	Vivotek Network Camera	270	0.169
http	WYM httpd	266	0.166
ssh	OpenSSH	264	0.165
http	Webs	263	0.164
rtsp		260	0.162
http	D-Link DCS-900 webcam http config	249	0.155
http	ImagiaTek	246	0.154
http	Panasonic BB-HCM331 Network Camera http config	238	0.149
http	NetBox httpd	208	0.13
http	Mobotix Camera http config	207	0.129
http	sbcache	203	0.127
http	Indy	202	0.126
http	MS-SDK-HttpServer	197	0.123
http	D-Link DCS-910 webcam http config	193	0.12
http	avtech	180	0.112
memcache	memcached	177	0.11
http	Gnway Web Server	175	0.109
http	FC	164	0.102
http	Network Camera	158	0.099
http	Jetty	158	0.099
http-proxy	MikroTik http proxy	150	0.094
http	HTTPsrv	150	0.094
http	David WebBox httpd	150	0.094
http	MiniServ	144	0.09
http	D-Link MiniAVServer	144	0.09
http	GoAhead-Webs	142	0.089
http	PDR-M800	141	0.088
http	IQinVision Embedded 1.0	141	0.088
http	avtech httpd	136	0.085
http	Ubicom	134	0.084
http	Linksys SPA942 VoIP phone http config	126	0.079
http	DrcomServer1.0	126	0.079
http	GS-Webs	125	0.078
http	W3MFC	122	0.076
http	D-Link printer/webcam http config	119	0.074
http	ver2.4 rev0	118	0.074
ssh	Dropbear sshd	114	0.071
http	Tridium Niagara httpd	114	0.071
http	Caucho Resin JSP engine	112	0.07
http	RapidLogic	110	0.069
http	httpd	110	0.069
http	Generic router http config	110	0.069
http	Stanley NT500 access control system httpd	104	0.065
ssh		102	0.064
http	Microsoft IIS	102	0.064
http	Router	101	0.063
http	uTorrent utserver web interface	100	0.062
http	Vivotek 3102 Camera http config	99	0.062
rtsp	Avtech MPEG4 DVR control rtspd	98	0.061
http	SilverStream httpd	97	0.061
http	HeiTel GmbH Web Server	96	0.06
http	D-Link DCS-3220 webcam http config	95	0.059
http	http server 1.0	93	0.058
http	Dreambox httpd	93	0.058
spy-net	Spy-Net or CyberGate backdoor	92	0.057
http	Tiny WebServer	92	0.057
http	D-Link web camera http config	92	0.057
http	Techno Vision Security System http config	91	0.057
http	Secure Computing Sidewinder firewall http admin	90	0.056
http	Wireless Network Camera	86	0.054
http	SonicWALL firewall http config	86	0.054
http	vid	85	0.053
http	alphapd	85	0.053
http	IBM HTTP Server	84	0.052
http	ChipPC Extreme httpd	83	0.052
http	ics-cache	82	0.051
http	OwnServer1.0	80	0.05
http	TP-LINK Router	79	0.049
vnc	VNC	78	0.049
telnet		78	0.049
http	wg_httpd	74	0.046
http	WebLogic httpd	71	0.044
http	DD-WRT milli_httpd	71	0.044
http	Linksys PAP2 VoIP http config	69	0.043
http-proxy	Microsoft Foundation Class httpd	66	0.041
http	IPCamera-Webs	66	0.041
http	Cisco IOS http config	65	0.041
http	httpd 1.1	64	0.04
http	Draytek Vigor ADSL router webadmin	59	0.037
ftp	Microsoft ftpd	59	0.037
http	Lotus Domino httpd	56	0.035
http	BlueIris-HTTP	56	0.035
http	CherryPy httpd	54	0.034
http	Board 7 Web Engine	54	0.034
http	TP-LINK MR3220 WAP http config	53	0.033
http	HTTPServer	52	0.032
http	u-Server	51	0.032
http	dvr1614n web-cam httpd	51	0.032
http	ADAM-6000	51	0.032
http	RapidLogic httpd	45	0.028
http	David-WebBox	45	0.028
http	WebServer	44	0.027
http	Rhinosoft Serv-U httpd	44	0.027
soap	gSOAP soap	43	0.027
http	U S Software Web Server	43	0.027
http	MultView WEB Server V1.1	43	0.027
http	Network Dome Camera	42	0.026
ftp		42	0.026
http	D-Link Web Server 0.01	41	0.026
http	TibetSystem Server 2.0	40	0.025
http	Microsoft Windows Media Server	40	0.025
http	AXIS 205 network camera web interface	39	0.024
mysql	MySQL	38	0.024
http	Sun Niagara httpd	38	0.024
http	SNF	38	0.024
http	Oracle Application Server 10g httpd	38	0.024
http-proxy	HughesNet Web Acceleration http proxy	37	0.023
http	go1984	37	0.023
http	DVR 2400 Security Camera web interface	37	0.023
http	webcamXP httpd	36	0.022
http	Virata-EmWeb	36	0.022
http	Microsoft-HTTPAPI	36	0.022
http	D-Link DCS-6620G webcam http config	36	0.022
xml		35	0.022
http	Zope httpd	35	0.022
http	ViewSonic PJD6521 projector http config	35	0.022
http	TeamViewer httpd	35	0.022
http	NETWORK	35	0.022
http	Kerio MailServer http config	35	0.022
http	Ipswitch IMail web service	35	0.022
http	Allegro-Software-RomPager	35	0.022
ssl	TLS	34	0.021
http	WebFS httpd	34	0.021
http	VB	34	0.021
http	CommuniGate Pro httpd	34	0.021
http	YAMAHA-RT	33	0.021
http	TP-LINK WR740N WAP http config	33	0.021
http	Mongoose httpd	33	0.021
http	Grandstream HT502 VoIP router http config	33	0.021
http	Beck IPC@CHIP embedded httpd	33	0.021
socks5		32	0.02
http	uTorrent WebUI	32	0.02
http	Milestone XProtect video surveillance http interface	32	0.02
http	IPC	32	0.02
http	iDVRhttpSvr	32	0.02
http	HttpFileServer httpd	32	0.02
http	ADH-Web	31	0.019
ftp	FileZilla ftpd	31	0.019
http	Vivotek Video Server	30	0.019
http	Speedr	30	0.019
http-proxy	Symantec firewall http proxy	30	0.019
http	D-Link DCS-2121 webcam http config	29	0.018
http	NetPort httpd	28	0.017
http	Mini ASP Web Server	28	0.017
http	Httpd	28	0.017
http	FRITZ!Box http config	28	0.017
http	Abyss httpd	28	0.017
http	HomeSeer Home Control Web Interface	27	0.017
ftp	vsftpd	27	0.017
http-proxy	Haproxy http proxy	26	0.016
http	MayGion WebServer(www.maygion.com)	26	0.016
http	IQ3	26	0.016
http	Dreambox DVB Enigma httpd	26	0.016
http	BlueIris	26	0.016
smtp	Microsoft ESMTP	25	0.016
irc	Unreal ircd	25	0.016
http	InterNiche Technologies WebServer 2.0	25	0.016
http	http server	25	0.016
http	eRouting	25	0.016
http	Embedded HTTP Server	25	0.016
http	Dvrs WebSvr 1.0.0	25	0.016
ftp	Pure-FTPd	25	0.016
http	WEB SERVER	24	0.015
http	IQhttpD	24	0.015
http	HP StorageWorks AG118A tape autoloader http config	24	0.015
http	Fnord httpd	24	0.015
http	D-Link DCS-3220G webcam http config	24	0.015
http	NetApp DFM httpd	23	0.014
http	HTTPD	23	0.014
http	Mothership Enterprise	22	0.014
http	Henry	22	0.014
http	AverMedia WebCamX httpd	22	0.014
http	RemotelyAnywhere remote PC management httpd	21	0.013
http	Observer XT (c) Veo	21	0.013
http	CCcam card sharing system http config	21	0.013
ftp	Serv-U ftpd	21	0.013
http	Zimbra http config	20	0.012
http	Snom 300 VoIP phone http config	20	0.012
http	Satel ETHM-1 alarm control unit	20	0.012
http	Router Webserver	20	0.012
http	Microsiga httpd	20	0.012
http	Mathopd httpd	20	0.012
http	fec	20	0.012
http	D-Link DCS-6620 webcam http config	20	0.012
http	Cisco SPA502G VoIP phone http config	20	0.012
ftp	vsftpd (before 2.0.8) or WU-FTPD	20	0.012
directconnect	Direct Connect P2P	20	0.012
http	WeOnlyDo wodWebServer.NET 1.3.0.20	19	0.012
http	WCY_WEBServer	19	0.012
http	Panasonic DVR slinger http config	19	0.012
http	GoldStar iPECS 50B PBX http config	19	0.012
http	eSoft	19	0.012
http	Crestron MPS-200 AV routing system http config	19	0.012
http	build-in http server	19	0.012
ftp	ProFTPD	19	0.012
http	Siemens Gigaset A580 or S450 VoIP phone http config	18	0.011
http	SEEnergy SVR-116	18	0.011
http	Polycom SoundPoint VoIP phone http config	18	0.011
http	Oracle WebLogic Server	18	0.011
http	DVSS Herculese DVR http config	18	0.011
http	D-Link DVS-4088S, DVS-5088S, or DVG-7062S VoIP gateway http config	18	0.011
http	World Client WDaemon httpd	17	0.011
http	Web-Based Enterprise Management CIM serverOpenPegasus WBEM httpd	17	0.011
http	Video server	17	0.011
http	Transmission BitTorrent management httpd	17	0.011
http	TP-LINK WR941N WAP http config	17	0.011
http	Tengine	17	0.011
http	Sun ONE Web Server	17	0.011
http	QNAP TS-219P NAS http config	17	0.011
http	CUWEBCACHE	17	0.011
http	Bosch Divar Security Systems http config	17	0.011
http	Z-World Rabbit	16	0.01
http	TRENDnet TV-IP301 webcam display httpd	16	0.01
http-proxy	F5 BIG-IP load balancer http proxy	16	0.01
http-proxy	CCProxy http proxy	16	0.01
http	Netgear DG834G router http config	16	0.01
http	KFWebServer	16	0.01
http	Keil-EWEB	16	0.01
http	Indy httpd	16	0.01
http	gen5th	16	0.01
http	CCProxy	16	0.01
http	VPON Server	15	0.009
http	Velneo vServer 7.0	15	0.009
http	TP-LINK WR541G/542G WAP http config	15	0.009
http	TP-LINK WR340G WAP http config	15	0.009
http	TED 5000 power use monitor	15	0.009
http	TAS embbed http	15	0.009
http	Router Web Config System	15	0.009
http	Rabbit	15	0.009
http	Perlbal	15	0.009
http	Panasonic WV-NS202A webcam http config	15	0.009
http	HyNetOS	15	0.009
http	D-Link print server http config	15	0.009
smtp	Microsoft Exchange smtpd	14	0.009
http	ZyXEL-RomPager	14	0.009
http	XWeb 1.0	14	0.009
http	UltiDev Cassini httpd	14	0.009
http	TP-LINK WR841N WAP http config	14	0.009
http	TP-LINK WA500G WAP http config	14	0.009
http	Small Home Server httpd	14	0.009
http	Siemens Gigaset PBX/TARGA DIP VoIP phone http config	14	0.009
http	Serv-U	14	0.009
http	NetTalk-WebServer	14	0.009
http	Microsoft ISA httpd	14	0.009
http	Kerio MailServer Webmail	14	0.009
http	Hikvision-webs/	14	0.009
http	eWON	14	0.009
http	D-Link DCS-3420 webcam http config	14	0.009
http	Buffalo AirStation http config	14	0.009
smtp	Postfix smtpd	13	0.008
http	Waveplus HTTPD	13	0.008
http	VigorAccess Web Server	13	0.008
http	TP-LINK WA901N WAP http config	13	0.008
http	pubsys	13	0.008
http	LiteSpeed httpd	13	0.008
http	III 100	13	0.008
http	HTTP Software 1.1	13	0.008
http	HP Integrated Lights-Out http config	13	0.008
http	go1984 httpd	13	0.008
http	Embedded Web Server	13	0.008
http	Debut embedded httpd	13	0.008
http	Cisco SPA504G VoIP phone http config	13	0.008
http	Casi-Rusco camera/Bestelco VoIP phone http config	13	0.008
ftp	MikroTik router ftpd	13	0.008
vnc		12	0.007
http	Varnish	12	0.007
http	sinuid	12	0.007
http	Lantronix XPort embedded ethernet http config	12	0.007
http	Intoto httpd	12	0.007
http	GM Streaming Server httpd	12	0.007
http	FileMaker Web Publishing httpd	12	0.007
http	Everfocus webcam http config	12	0.007
http	D-Link DCS-5300 webcam http config	12	0.007
http	D-Link DCS-2120 webcam http config	12	0.007
http	Convision Vistabox security camera http config	12	0.007
http	ArGoSoft Mail Server Pro httpd	12	0.007
http	Allnet	12	0.007
http	AIM HTTP	12	0.007
upnp	Conexant-EmWeb	11	0.007
telnet	Linux telnetd	11	0.007
telnet	Allied Telesis x900-series switch telnetd	11	0.007
smtp		11	0.007
http	webcam 7	11	0.007
http	VCS-VideoJet-Webserver	11	0.007
http	Ubicom httpd	11	0.007
http	TP-LINK WR741N WAP http config	11	0.007
http	TeleEye	11	0.007
http	Synaccess NP-16 or NP-1601D power management system httpd	11	0.007
http	Sipura SPA VoIP http config	11	0.007
http	Serverdoc remote httpd	11	0.007
http	LuCI Lua http config	11	0.007
http	IceWarp webmail httpd	11	0.007
http	Foundry EdgeIron switch http config	11	0.007
http	AVR_Small_Webserver	11	0.007
http	App-webs/	11	0.007
http	ADH-Web httpd	11	0.007
http	2Wire HomePortal touer http config	11	0.007
vnc	RealVNC Personal	10	0.006
http	WIWA	10	0.006
http	Unreal Tournament http admin	10	0.006
http	TP-LINK WA5210G WAP http config	10	0.006
http	TP-LINK WA501G WAP http config	10	0.006
http	TMS6000 3.0	10	0.006
http	Panasonic DG-NS202A webcam http config	10	0.006
http	Netscape Enterprise httpd	10	0.006
http	MoxaHttp	10	0.006
http	Linksys wireless-G WAP http config	10	0.006
http	kangle	10	0.006
http	iRMC S2 Webserver	10	0.006
http	iCanWebServer	10	0.006
http	DECORUM	10	0.006
http	Citrix Metaframe ICA Browser	10	0.006
http	Apusic	10	0.006
http	Apache 1.3.29	10	0.006
ftp	Gene6 ftpd	10	0.006