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	Version	Count	Percent
http			30535	19.059
http	Apache		7703	4.808
http	Microsoft IIS httpd	6.0	7133	4.452
http	Netwave webcam http config		6404	3.997
http	Netwave IP camera http config		5819	3.632
irc	Dancer ircd		4086	2.55
http	SonicWALL		4030	2.515
http	Hikvision-Webs		3516	2.195
http	GoAhead-Webs httpd		3461	2.16
no match	-/-	-/-	2916	1.82
http	uc-httpd	1.0.0	2740	1.71
http	Avtech AVN801 network camera	1.0	2583	1.612
http	Microsoft IIS httpd	7.5	2499	1.56
chat	AIM or ICQ server		2403	1.5
http	thttpd		2375	1.482
http	mini_httpd	1.19 19dec2003	2303	1.437
http	Boa HTTPd	0.94.14rc21	2152	1.343
http	Microsoft IIS httpd		2043	1.275
http	Boa httpd		1948	1.216
http	GeoVision GeoHttpServer for webcams		1492	0.931
http	Microsoft IIS httpd	7.0	1407	0.878
http	thttpd	2.25b 29dec2003	1389	0.867
http	Cdn Cache Server V2.0		1351	0.843
http	Boa HTTPd	0.94.13	1334	0.833
http	Cross Web Server		1284	0.801
http	Apache	2.2.3	1252	0.781
http	Apache	2.2.16	1200	0.749
http	dcs-lig-httpd		1181	0.737
http	D-Link/Airlink IP webcam http config	1.0	1161	0.725
http	Apache	2.0.63	1079	0.673
http	Apache Tomcat/Coyote JSP engine	1.1	1041	0.65
http	lighttpd	1.4.28	1003	0.626
http	GoAhead-Webs embedded httpd		999	0.624
http	Microsoft HTTPAPI httpd	2.0	888	0.554
http	Linux	2.x UPnP	818	0.511
http	D-Link DIR-300 WAP http admin		793	0.495
http	Apache	2.2.9	764	0.477
http	Apache	2.2.22	725	0.453
http	webserver	1.0	724	0.452
http	AIM	1.0	713	0.445
http	BusyBox httpd		681	0.425
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	Boa HTTPd	0.93.15	642	0.401
http	WindWeb	2.0	631	0.394
http	Apache	1.3.33	623	0.389
http	Apache	2.2.14	611	0.381
http	WebServer(IPCamera_Logo)		538	0.336
http	lighttpd	1.4.29	522	0.326
http	lighttpd	1.4.19	492	0.307
http	Apache	2.2.15	468	0.292
http	DVR Systems webcam http interface		445	0.278
http	lighttpd	1.4.30	437	0.273
http	lighttpd	1.4.26	431	0.269
http	MikroTik router http config		417	0.26
http	Apache	2.2.21	408	0.255
http	Apache	2.2.17	407	0.254
http	Mbedthis-Appweb	2.0.4	401	0.25
http	Apache	2.2.8	373	0.233
http	nginx		353	0.22
http	Gadspot/Avtech AV787 webcam http config		341	0.213
http	Apache	1.3.41	339	0.212
http	Microsoft IIS httpd	5.0	333	0.208
http	Boa	0.94.13	330	0.206
arcserve	ARCserve Discovery		323	0.202
http	MikroTik router config httpd		306	0.191
http	D-Link DCS-920 webcam http config		302	0.188
http	D-Link Internet Camera		301	0.188
http	Microsoft IIS httpd	5.1	299	0.187
http	DrayTek Vigor 2800-series ADSL router httpd		290	0.181
http	TwistedWeb httpd	8.2.0	282	0.176
http	Apache	1.3.34	281	0.175
http	Dart WebServer Tool	1.0	279	0.174
http	TRENDnet TV-IP110w or TV-IP422W webcam display httpd		278	0.174
http	Boa HTTPd	0.94.14rc18-ipcam	278	0.174
http	Vivotek Network Camera		270	0.169
http	WYM httpd	1.0	266	0.166
http	Webs		263	0.164
rtsp			260	0.162
http	thttpd	2.19-MX Jul 1 2010	258	0.161
http	nginx	1.1.18	251	0.157
http	D-Link DCS-900 webcam http config		249	0.155
http	ImagiaTek		246	0.154
http	Apache	2.2.11	245	0.153
http	Panasonic BB-HCM331 Network Camera http config		238	0.149
http	Apache	2.2.4	231	0.144
http	Allegro RomPager	4.51 UPnP/1.0	230	0.144
http	lighttpd	1.4.13	223	0.139
http	lighttpd		210	0.131
http	NetBox httpd	2.8 Build 4128	207	0.129
http	Mobotix Camera http config		207	0.129
http	sbcache	3.5.5	203	0.127
http	Boa HTTPd	0.92o	201	0.125
http	Apache	2.2.10	199	0.124
http	MS-SDK-HttpServer	1.0	197	0.123
http	Mbedthis-Appweb	2.4.2	194	0.121
http	D-Link DCS-910 webcam http config		193	0.12
http	thttpd	2.25b-lxc 29dec2003	191	0.119
memcache	memcached		177	0.11
http	Gnway Web Server		175	0.109
http	Allegro RomPager	4.07 UPnP/1.0	168	0.105
http	FC		164	0.102
http	Network Camera		158	0.099
http	Apache	2.2.20	152	0.095
http-proxy	MikroTik http proxy		150	0.094
http	HTTPsrv		150	0.094
http	D-Link MiniAVServer		144	0.09
http	thttpd	2.24 26oct2003	142	0.089
http	PDR-M800	1.0	141	0.088
http	IQinVision Embedded 1.0		141	0.088
http	avtech httpd	1.0	136	0.085
http	Apache	1.3.27	136	0.085
http	Apache	2.0.53	135	0.084
http	BusyBox httpd	1.13	134	0.084
http	Apache	2.0.52	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	thttpd	2.19-MX Dec 8 2009	123	0.077
http	D-Link printer/webcam http config		119	0.074
http	ver2.4 rev0		118	0.074
http	thttpd	2.19-MX Sep 9 2010	116	0.072
http	httpd		110	0.069
http	Generic router http config		110	0.069
http	avtech	1.0..Expires	110	0.069
http	RapidLogic	1.1	108	0.067
http	thttpd	2.19-MX Oct 19 2011	107	0.067
http	W3MFC	1.68	106	0.066
http	Apache	1.3.35	105	0.066
http	thttpd	2.25b PHP	104	0.065
http	Stanley NT500 access control system httpd		104	0.065
http-proxy	Squid http proxy		103	0.064
ssh			102	0.064
http	Microsoft IIS		102	0.064
http	Router		101	0.063
http	uTorrent utserver web interface		100	0.062
http	Ubicom	1.1	100	0.062
http	Vivotek 3102 Camera http config		99	0.062
rtsp	Avtech MPEG4 DVR control rtspd		98	0.061
http	SilverStream httpd	10.0	97	0.061
http	Apache	1.3.39	97	0.061
http	Indy	8.0.25	96	0.06
http	HeiTel GmbH Web Server		96	0.06
http	D-Link DCS-3220 webcam http config		95	0.059
http	Apache	1.2.6	95	0.059
http	http server 1.0		93	0.058
http	Dreambox httpd		93	0.058
http	Apache	2.0.59	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	2.0	91	0.057
http	Secure Computing Sidewinder firewall http admin		90	0.056
http	Apache	2.2.19	89	0.056
http	Apache	2.2.12	89	0.056
http	Apache	2.2.6	87	0.054
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	thttpd	2.19-MX Apr 26 2011	84	0.052
http	lighttpd	1.4.23	84	0.052
http	nginx	0.7.61	83	0.052
http	ChipPC Extreme httpd		83	0.052
http	OwnServer1.0		80	0.05
http	Apache	2.2.13	80	0.05
http	Apache	1.1.1 (Unix) PHP	80	0.05
http	TP-LINK Router		79	0.049
vnc	VNC		78	0.049
telnet			78	0.049
http	MiniServ	0.01	78	0.049
http	nginx	0.8.54	77	0.048
http	Apache	2.0.54	74	0.046
http	wg_httpd	1.0(based Boa	72	0.045
http	nginx	0.7.67	72	0.045
http	GoAhead-Webs		71	0.044
http	DD-WRT milli_httpd		71	0.044
http	avtech	1.0	70	0.044
http	thttpd	2.19-MX Feb 27 2009	69	0.043
http	Linksys PAP2 VoIP http config		69	0.043
http	nginx	0.7.65	68	0.042
ssh	Dropbear sshd	0.52	67	0.042
http-proxy	Microsoft Foundation Class httpd	1.0	66	0.041
http	IPCamera-Webs		66	0.041
http	WebLogic httpd		65	0.041
http	httpd 1.1		64	0.04
http	Cisco IOS http config		64	0.04
http	Apache	1.3.37	63	0.039
http	lighttpd	1.4.18	62	0.039
http	Apache	2.2.0	60	0.037
http	Draytek Vigor ADSL router webadmin		59	0.037
http	Tridium Niagara httpd	1.1	58	0.036
http-proxy	Squid http proxy	2.7.STABLE9	56	0.035
http	IBM HTTP Server		55	0.034
ftp	Microsoft ftpd		55	0.034
http	Board 7 Web Engine		54	0.034
http	TP-LINK MR3220 WAP http config		53	0.033
http	nginx	1.2.1	53	0.033
http	nginx	1.0.11	53	0.033
http	Jetty	6.1.x	52	0.032
http	u-Server		51	0.032
http	Lotus Domino httpd		51	0.032
http	HTTPServer		51	0.032
http	dvr1614n web-cam httpd		51	0.032
http	ADAM-6000	8.1.0019	51	0.032
http	GoAhead-Webs	GoAhead-Webs	50	0.031
http	lighttpd	1.4.20	49	0.031
http	David WebBox httpd	11.00a.0717	48	0.03
http	Apache	2.0.61	47	0.029
http	nginx	1.0.10	46	0.029
http	Indy	10.1.5	46	0.029
http	RapidLogic httpd	1.1	45	0.028
http	nginx	0.7.62	44	0.027
http	lighttpd	1.4.31	44	0.027
http	Allegro RomPager	4.01	44	0.027
http	U S Software Web Server		43	0.027
http-proxy	Squid http proxy	2.6.STABLE12	43	0.027
http	nginx	1.2.0	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
soap	gSOAP soap	2.7	40	0.025
http	TibetSystem Server 2.0		40	0.025
http	thttpd	2.19-MX Sep 1 2008	40	0.025
ssh	OpenSSH	4.3	39	0.024
http	Caucho Resin JSP engine	2.1.16	39	0.024
http	WebServer		38	0.024
http	Sun Niagara httpd	1.1	38	0.024
http	SNF	0.1	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	David-WebBox	12.00a (0781) WIN32	37	0.023
http	MiniServ	1.580	36	0.022
http	D-Link DCS-6620G webcam http config		36	0.022
http	Apache	1.3.31	36	0.022
xml			35	0.022
http	ViewSonic PJD6521 projector http config		35	0.022
http	TeamViewer httpd		35	0.022
http	NETWORK		35	0.022
ssl	TLS	1.0	34	0.021
ssh	Dropbear sshd	0.51	34	0.021
http	WebFS httpd	1.21	34	0.021
http	VB		34	0.021
http	Ubicom	Ubicom	34	0.021
http-proxy	Squid http proxy	3.1.18	34	0.021
http	nginx	0.8.53	34	0.021
http	Microsoft Windows Media Server	9.01.01.5001	34	0.021
http	Kerio MailServer http config		34	0.021
http	YAMAHA-RT		33	0.021
http	TP-LINK WR740N WAP http config		33	0.021
http-proxy	Squid http proxy	3.1.20	33	0.021
http	Mongoose httpd		33	0.021
http	Ipswitch IMail web service	7.15	33	0.021
http	ics-cache	3.5.5	33	0.021
http	Grandstream HT502 VoIP router http config		33	0.021
http	Beck IPC@CHIP embedded httpd		33	0.021
http	Apache	2.0.55	33	0.021
http	Allegro RomPager	4.06	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	CommuniGate Pro httpd	4.1.8	32	0.02
http	thttpd	2.23beta1 26may2002	31	0.019
http	thttpd	2.19-MX Jan 9 2008	31	0.019
http	BlueIris-HTTP	1.1	31	0.019
http	ADH-Web		31	0.019
http	Vivotek Video Server		30	0.019
http	thttpd	2.19-MX Jan 24 2006	30	0.019
http-proxy	Symantec firewall http proxy		30	0.019
http	nginx	1.0.15	30	0.019
http	lighttpd	1.4.22	30	0.019
http	thttpd	2.19-MX Jul 16 2009	29	0.018
http	Speedr	0.8.0	29	0.018
http	D-Link DCS-2121 webcam http config		29	0.018
http	Apache	1.3.42	29	0.018
http	Apache	0.6.5	29	0.018
http	Tridium Niagara httpd	3.5.34	28	0.017
http	NetPort httpd	1.1	28	0.017
http	Mini ASP Web Server		28	0.017
http	FRITZ!Box http config		28	0.017
http	webcamXP httpd	5	27	0.017
http	nginx	0.8.22	27	0.017
http	Httpd	1.0	27	0.017
http	HomeSeer Home Control Web Interface		27	0.017
http	thttpd	2.19-MX Mar 31 2010	26	0.016
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	David WebBox httpd	12.00a.0781	26	0.016
http	BlueIris	1.1	26	0.016
http	AXIS 205 network camera web interface	4.05	26	0.016
ftp	vsftpd	2.0.8 or later	26	0.016
irc	Unreal ircd		25	0.016
http	InterNiche Technologies WebServer 2.0		25	0.016
http	http server	everfocus	25	0.016
http	Dvrs WebSvr 1.0.0		25	0.016
http	Boa HTTPd	0.94.11	25	0.016
http	BlueIris-HTTP	BlueIris-HTTP	25	0.016
ftp	Pure-FTPd		25	0.016
ssh	OpenSSH	5.3	24	0.015
http	WEB SERVER		24	0.015
http	nginx	1.0.8	24	0.015
http	nginx	1.0.4	24	0.015
http	Indy	10.0.52	24	0.015
http	ics-cache	3.5.4	24	0.015
http	HP StorageWorks AG118A tape autoloader http config		24	0.015
http	D-Link DCS-3220G webcam http config		24	0.015
http	Apache	2.0.50	24	0.015
http	nginx	0.8.46	23	0.014
http	NetApp DFM httpd		23	0.014
http	HTTPD		23	0.014
http-proxy	Squid http proxy	2.7.STABLE5	22	0.014
http	Mothership Enterprise		22	0.014
http	Henry	1.1	22	0.014
http	AverMedia WebCamX httpd		22	0.014
http	Apache	2.0.40	22	0.014
http	Observer XT (c) Veo		21	0.013
http	nginx	1.0.0	21	0.013
http	nginx	0.8.17	21	0.013
http	GoAhead-Webs	2.5.0	21	0.013
http	Apache	2.2.2	21	0.013
http	Apache	2.0.64	21	0.013
http	Zimbra http config		20	0.012
http	Virata-EmWeb	6.2.1	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	nginx	1.2.2	20	0.012
http	nginx	0.8.52	20	0.012
http	Microsiga httpd		20	0.012
http	lighttpd	1.4.11	20	0.012
http	IQhttpD	1.0 07oct2007	20	0.012
http	fec	1.0 (Funkwerk BOSS)	20	0.012
http	D-Link DCS-6620 webcam http config		20	0.012
http	Cisco SPA502G VoIP phone http config		20	0.012
http	Boa HTTPd	0.94.14rc20	20	0.012
http	Apache	2.2.X	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	1.0	19	0.012
http	thttpd	2.20b 10oct00	19	0.012
http	thttpd	2.19-MX Jul 5 2010	19	0.012
http	Panasonic DVR slinger http config	1.1a	19	0.012
http	nginx	1.0.5	19	0.012
http	Microsoft-HTTPAPI	1.0	19	0.012
http	GoldStar iPECS 50B PBX http config		19	0.012
http	eSoft		19	0.012
http	David WebBox httpd	12.00a.0780	19	0.012
http	Crestron MPS-200 AV routing system http config		19	0.012
http	build-in http server		19	0.012
http	Allegro-Software-RomPager	4.30b3	19	0.012
http	Abyss httpd	2.7.0.0-X1	19	0.012
http	thttpd	2.19-MX Oct 20 2003	18	0.011
http	thttpd	2.19-MX May 19 2006	18	0.011
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	nginx	0.8.55	18	0.011
http	ics-cache	3.5.2	18	0.011
http	DVSS Herculese DVR http config	1.0	18	0.011
http	D-Link DVS-4088S, DVS-5088S, or DVG-7062S VoIP gateway http config		18	0.011
http	CCcam card sharing system http config		18	0.011
http	Apache	2.0.47	18	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	thttpd	2.19-MX Mar 29 2012	17	0.011
http	thttpd	2.19-MX Jul 12 2011	17	0.011
http	Sun ONE Web Server	6.1	17	0.011
http	QNAP TS-219P NAS http config	1.0	17	0.011
http	Bosch Divar Security Systems http config		17	0.011
http	Apache	2.4.2	17	0.011
http	Apache	2.2	17	0.011
http	Apache	1.3.23	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	nginx	0.6.32	16	0.01
http	Netgear DG834G router http config		16	0.01
http	Microsoft-HTTPAPI	2.0	16	0.01
http	HttpFileServer httpd	2.2f	16	0.01
http	CherryPy httpd	3.2.2	16	0.01
http	CCProxy		16	0.01
http	Apache	2.0.49	16	0.01
ssh	OpenSSH	5.1p1 Debian 5	15	0.009
http	VPON Server	1.0	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-proxy	Squid http proxy	3.1.9	15	0.009
http	Perlbal		15	0.009
http	Panasonic WV-NS202A webcam http config		15	0.009
http	MiniServ	1.590	15	0.009
http	Mbedthis-Appweb	2.2.2	15	0.009
http	Keil-EWEB	2.1	15	0.009
http	Jetty		15	0.009
http	HyNetOS	2.0	15	0.009
http	D-Link print server http config	1.0	15	0.009
http	Caucho Resin JSP engine	3.1.9	15	0.009
http	Apache Tomcat/Coyote JSP engine	1.0	15	0.009
http	Allegro RomPager	3.10	15	0.009