Overview of services running on Port 8181 TCP.
~219 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
ssl	SSLv3	63375	28.822
http	Microsoft IIS httpd	45011	20.47
http		13742	6.25
http	Sun GlassFish	11384	5.177
http	Apache	10301	4.685
http	Ipswitch IMail Monitor web service	6146	2.795
no match	-/-	5539	2.519
irc	Dancer ircd	4038	1.836
http	Apache Tomcat/Coyote JSP engine	3800	1.728
http	SonicWALL	3324	1.512
http	lighttpd	3087	1.404
chat	AIM or ICQ server	2278	1.036
http	CTCFC	1979	0.9
http	Boa HTTPd	1933	0.879
http	Ipswitch IMail web service	1751	0.796
http	DD-WRT milli_httpd	1733	0.788
http	Microsoft HTTPAPI httpd	1636	0.744
http	Allegro RomPager	1472	0.669
http	MikroTik router config httpd	1279	0.582
http	CherryPy httpd	1269	0.577
http	nginx	1235	0.562
http	Netwave IP camera http config	1084	0.493
http	GoAhead-Webs httpd	1062	0.483
http	Secure Computing Sidewinder firewall http admin	1015	0.462
http	thttpd	982	0.447
http	Transmission BitTorrent management httpd	972	0.442
http	Jetty	931	0.423
http	GeoVision GeoHttpServer for webcams	917	0.417
http	Avtech AVN801 network camera	839	0.382
http	Virata-EmWeb	791	0.36
upnp	Conexant-EmWeb	723	0.329
http	AIM	630	0.287
http-proxy	Squid http proxy	627	0.285
http	uc-httpd	612	0.278
http	Cross Web Server	573	0.261
remoting	MS .NET Remoting services	550	0.25
http	MikroTik router http config	546	0.248
http	ise GmbH HTTP-Server v2.0	508	0.231
http	HTTPD 1.0	497	0.226
http	Draytek Vigor ADSL router webadmin	489	0.222
http	Sagem F@st router httpd	480	0.218
http	mini_httpd	449	0.204
http	Intoto httpd	429	0.195
http	Hikvision-Webs	429	0.195
http	Linksys router http config	370	0.168
http	Unknown	347	0.158
http	D-Link DIR-300 WAP http admin	323	0.147
ssl	TLS	306	0.139
http	uhttpd	274	0.125
http	webcamXP.Lite	253	0.115
http	WindWeb	249	0.113
http	Indy httpd	240	0.109
xml-rpc	ABYSS httpd	207	0.094
http-proxy	Symantec firewall http proxy	202	0.092
http	Mbedthis-Appweb	199	0.091
http	GoAhead-Webs embedded httpd	199	0.091
http	Netgear DG834G router http config	195	0.089
http-proxy	Oops! http proxy	184	0.084
ssh	OpenSSH	179	0.081
http	uTorrent utserver web interface	179	0.081
http	eWON	179	0.081
http	SonicWALL firewall http config	176	0.08
http	Router	176	0.08
http	QNAP TS-219P NAS http config	174	0.079
http	http server 1.0	171	0.078
http	Netgear DG834 router http config	156	0.071
http	Gadspot/Avtech AV787 webcam http config	146	0.066
telnet		142	0.065
http	DVR Systems webcam http interface	141	0.064
http	TP-LINK Router	136	0.062
http	Indy	129	0.059
http	HTTP Software 1.1	127	0.058
http	SBox server	126	0.057
http-proxy	Haproxy http proxy	124	0.056
arcserve	ARCserve Discovery	114	0.052
http	DrcomServer1.0	112	0.051
http	IP_SHARER WEB	111	0.05
http	Httpd	107	0.049
http	EfangVHost Server	106	0.048
http	PDR-M800	105	0.048
http	Zope httpd	103	0.047
http-proxy	MikroTik http proxy	103	0.047
http	OpenDNS Guide	101	0.046
http	MiniServ	99	0.045
http	H3C-Miniware-Webs	98	0.045
vnc	VNC	96	0.044
ssh		96	0.044
http	TwistedWeb httpd	93	0.042
http	Caucho Resin JSP engine	91	0.041
xml		88	0.04
http	MiniWeb	87	0.04
http	Microsoft ISA httpd	87	0.04
upnp	Microsoft Windows UPnP	86	0.039
http	NcWebServer/1.3.37 (Unix) mod_ssl/2.8.28 OpenSSL	85	0.039
http	Netgear WGR614v9 WAP http config	83	0.038
intermapper	InterMapper network monitor	81	0.037
http	Netgear DGN1000 router http config	81	0.037
http	Embedded HTTP Server	81	0.037
http	D-Link/Airlink IP webcam http config	75	0.034
http	Oracle XML DB Enterprise Edition httpd	74	0.034
ssl	Microsoft IIS SSL	72	0.033
http	Sun GlassFish Open Source Edition	72	0.033
http	World Client WDaemon httpd	71	0.032
http	uTorrent WebUI	71	0.032
http	Tridium Niagara httpd	69	0.031
http	TP-LINK WR340G WAP http config	69	0.031
http	dcs-lig-httpd	69	0.031
ssl	TLSv1	68	0.031
http	MS-SDK-HttpServer	67	0.03
http	NAI EPO Agent framework	66	0.03
http	httpd 1.1	65	0.03
http	Netgear or Linksys WAP http config	64	0.029
http	Router Webserver	62	0.028
http	Digital Loggers Web Power Switch II http config	62	0.028
http	Waveplus HTTPD	59	0.027
http	siyou server	59	0.027
http	Microsoft-HTTPAPI	59	0.027
http	Gnway Web Server	58	0.026
http	BaseHTTPServer	58	0.026
http	RapidLogic httpd	57	0.026
http	Netgear FVS318 router http config	55	0.025
http	httpd	54	0.025
http	Boa httpd	54	0.025
http	Microsoft Windows Media Server	53	0.024
shoutcast	SHOUTcast server	52	0.024
http	Rhinosoft Serv-U httpd	52	0.024
http	D-Link DCS-900 webcam http config	52	0.024
ftp	Microsoft ftpd	52	0.024
http	Ubicom httpd	50	0.023
http	David WebBox httpd	50	0.023
http	Cisco IOS http config	50	0.023
http	webserver	49	0.022
http	Netgear WGR614v7 WAP http config	49	0.022
http	TP-LINK WR740N WAP http config	48	0.022
http	JuanNiu	48	0.022
http	Milestone XProtect video surveillance http interface	47	0.021
http	HTTPServer	47	0.021
http	Dreambox httpd	46	0.021
http	WYM httpd	45	0.02
http	Netgear DG834GT router http config	45	0.02
http	Netgear WNR3500L WAP http config	43	0.02
http	IceWarp webmail httpd	43	0.02
http	TRENDnet TV-IP100 or TV-IP110 webcam display httpd	42	0.019
http	SAP Message Server httpd	42	0.019
http	Ubicom	41	0.019
http	Linksys PAP2 VoIP http config	40	0.018
http	Imagine Reloaded beta	40	0.018
http	FVG318	40	0.018
socks-proxy	Socks4A	39	0.018
http	webcamXP httpd	39	0.018
http	GM Streaming Server httpd	39	0.018
http	Buffalo AirStation http config	39	0.018
ftp	vsftpd	39	0.018
http	Rex media encoder http config	38	0.017
http	Netgear WNR2000v2 WAP http config	38	0.017
http	Lotus Domino httpd	38	0.017
http	HttpFileServer httpd	38	0.017
http	Avamar	38	0.017
http	WebServer(IPCamera_Logo)	37	0.017
http	Techno Vision Security System http config	37	0.017
http	David-WebBox	37	0.017
http	BenQ projector	37	0.017
rtsp	Avtech MPEG4 DVR control rtspd	36	0.016
http	Webs	36	0.016
http-proxy	NetApp NetCache http proxy	36	0.016
http	Fnord httpd	36	0.016
http	Airlink 101 or TRENDnet TVIP-422w webcam http config	36	0.016
http	Netgear WNR1000v3 WAP http config	35	0.016
shoutcast-publishing	SHOUTcast publishing port	34	0.015
http	TRENDnet TV-IP110w or TV-IP422W webcam display httpd	34	0.015
http	QNAP TS-109-II NAS http config	34	0.015
http	GoAhead-Webs	34	0.015
http	ChipPC Extreme httpd	34	0.015
ssh	Dropbear sshd	33	0.015
http	TP-LINK WR841N WAP http config	32	0.015
http	RWAPM X-Server 32bit Apache	32	0.015
http	TP-LINK WR941N WAP http config	31	0.014
http	ADTRAN	31	0.014
http	ADH-Web httpd	31	0.014
http	D-Link DI-524 http config	30	0.014
rtsp		29	0.013
ftp	ProFTPD	29	0.013
mysql	MySQL	28	0.013
http	PasteWSGIServer	28	0.013
http	OwnServer1.0	28	0.013
http	HP Integrated Lights-Out http config	28	0.013
http	D-Link DI-804HV http config	28	0.013
http	Citrix Metaframe ICA Browser	28	0.013
http	WEB SERVER	27	0.012
http	TP-LINK WR541G/542G WAP http config	27	0.012
http-proxy	3Proxy http proxy	27	0.012
http	NEC Electra Elite IPK II WebPro	27	0.012
ssl	multi-vendor SSL	26	0.012
irc	Unreal ircd	26	0.012
http	Oracle GlassFish	26	0.012
http	Kerio MailServer http config	26	0.012
http	Grandstream HT502 VoIP router http config	26	0.012
http	D-Link router/Airlink NAS http config	26	0.012
http	D-Link DCS-920 webcam http config	26	0.012
http	XBMC Web Media Manager	25	0.011
http	Winstone Servlet Engine	25	0.011
http	WebFS httpd	25	0.011
http	uClinux-httpd	25	0.011
http	Mobotix Camera http config	25	0.011
http	linux	25	0.011
ftp		25	0.011
http	SmarterTools httpd	24	0.011
http	Netgear DGN2000 router http config	24	0.011
http	IP_SHARER WEB 1.0	24	0.011
http	D-Link DIR-600 WAP http config	24	0.011
smtp	Microsoft ESMTP	23	0.01
http	Tornado	23	0.01
http	Speedr	23	0.01
http	Switch	22	0.01
http	Network Camera	22	0.01
http	Netgear DG834PN router http config	22	0.01
http	Netgear DG834 FR WAP http config	22	0.01
http	MultView WEB Server V1.1	22	0.01
http	ESET NOD32 anti-virus update httpd	22	0.01
http	DrayTek Vigor 3300 router http config	22	0.01
http	Delta Networks Embedded HTTPD	22	0.01
http	antid	22	0.01
http	Virgin Super Hub media player http config	21	0.01
http-proxy	FreeProxy http proxy	21	0.01
http	Netgear CVG834G cable modem http config	21	0.01
http	Mono-HTTPAPI	21	0.01
http	LuCI Lua http config	21	0.01
http	D-Link DCS-910 webcam http config	21	0.01
http	calibre	21	0.01
vnc	RealVNC Personal	20	0.009
http	Zimbra http config	20	0.009
http	VMware ESXi Server httpd	20	0.009
http	Seagate Black Armor 440 NAS http config	20	0.009
http	Netgear DG834 http config	20	0.009
http	GoldStar iPECS 50B PBX http config	20	0.009
http	CCcam card sharing system http config	20	0.009
http	Vivotek 3102 Camera http config	19	0.009
http	RemotelyAnywhere remote PC management httpd	19	0.009
http	NT	19	0.009
http	NewCS satellite card sharing system http config	19	0.009
http	MediaHouse ipMonitor httpd	19	0.009
http	Linksys RVS4000 security router http config	19	0.009
http	D-Link DIR-815 WAP http config	19	0.009
vnc	RealVNC Enterprise	18	0.008
smtp	Postfix smtpd	18	0.008
http	UltiDev Cassini httpd	18	0.008
http-proxy	Microsoft Foundation Class httpd	18	0.008
http	Netgear WNR3500 WAP http config	18	0.008
http	Netgear WGR614v6 WAP http config	18	0.008
http	Microsoft IIS	18	0.008
http	Icecast streaming media server	18	0.008
http	Henry httpd	18	0.008
http	Engine 12.6.1.370	18	0.008
http	Embedded HTTP Server.	18	0.008
http	CrushFTP httpd	18	0.008
ftp	Serv-U ftpd	18	0.008
ftp	FileZilla ftpd	18	0.008
http	W3MFC	17	0.008
http	VCS-VideoJet-Webserver	17	0.008
http	Siemens Gigaset A580 or S450 VoIP phone http config	17	0.008
http	Sagem Livebox WAP http config	17	0.008
http	Netgear DG632 router http config	17	0.008
http	GoAhead httpd	17	0.008
http	Apache Tomcat	17	0.008
http	VBrick DME v1.0	16	0.007
http	Unreal Tournament http admin	16	0.007
http	Sun Java System Application Server httpd	16	0.007
http-proxy	F5 BIG-IP load balancer http proxy	16	0.007
http	Power MOD by emits.eu	16	0.007
http	Maipu-Webs	16	0.007
http	IMail_Monitor	16	0.007
http	HomeSeer Home Control Web Interface	16	0.007
http	BlueIris-HTTP	16	0.007
http	APC SmartUPS http config	16	0.007
secure-socket	CA Secure Socket Adapter	15	0.007
http	WebLogic httpd	15	0.007
http	TeamViewer httpd	15	0.007
http-proxy	ziproxy http proxy	15	0.007
http	Miktotik Dude network monitor	15	0.007
http	D-Link DIR-645 WAP http config	15	0.007
ftp	Pure-FTPd	15	0.007
rtsp	Apple AirTunes rtspd	14	0.006
http	QNAP TS-219, TS-239, or TS-509 NAS http config	14	0.006
http	Motion Camera httpd	14	0.006
http	i3micro VRG VoIP adapter http config	14	0.006
http	go1984 httpd	14	0.006
http	GlassFish Server Open Source Edition 3.1.1	14	0.006
http	Fortinet VPN/firewall http config	14	0.006
http	D-Link web camera http config	14	0.006
http	D-Link G604T DSL router http config	14	0.006
http	DI-LB604 HTTP Server	14	0.006
http	BOSSERV	14	0.006
http	Aterm(HT)	14	0.006
http	AquaController 4.0	14	0.006
http	alphapd	14	0.006
smtp	Microsoft Exchange smtpd	13	0.006
http	Wireless Network Camera	13	0.006
http	TP-LINK WR741N WAP http config	13	0.006
http	TP-LINK WR1043ND WAP http config	13	0.006
http	Tomato WAP firmware httpd	13	0.006
http	Network Associates ePolicy Orchestrator	13	0.006
http	Netgear WGR614v8 WAP http config	13	0.006
http	NetEVI	13	0.006
http	Linux	13	0.006
http	Linksys WAG200G WAP http config	13	0.006
http	HTTPsrv	13	0.006
http	fec	13	0.006
http	D-Link DI-604 http config	13	0.006
http	ConquerCam	13	0.006
http	AudioCodes Mediant 200 VoIP gateway http config	13	0.006
http	Apache Embedded Server	13	0.006
socks5		12	0.005
smtp		12	0.005
http	WindRiver-WebServer	12	0.005
http	WebServer	12	0.005
http	WEBrick httpd	12	0.005
http	webcam 7 httpd	12	0.005
http	Vivotek Network Camera	12	0.005
http	TRMB	12	0.005
http-proxy	EZproxy web proxy	12	0.005
http	NetPort httpd	12	0.005
http	gen5th	12	0.005
http	D-Link DFL-800 or DFL-860 firewall http config	12	0.005
http	AIM HTTP	12	0.005
vnc		11	0.005
ssh	MikroTik RouterOS sshd	11	0.005
soap	gSOAP soap	11	0.005
http	ZyXEL Prestige webadmin	11	0.005
http	WSGIServer	11	0.005
http	TAC Xenta 511 programmable logic controller httpd	11	0.005
http	Sun ONE Web Server	11	0.005
http	Pramati Server	11	0.005
http	Oracle WebLogic Server	11	0.005
http	Netgear WNR3500v2 WAP http config	11	0.005
http	Netgear DG834N router http config	11	0.005
http	iCanWebServer	11	0.005
http	FRITZ!Box http config	11	0.005
http	FitNesse httpd	11	0.005
http	Dahua-HTTP Server	11	0.005
http	Boa	11	0.005
upnp	Portable SDK for UPnP devices	10	0.005
java-rmi	Java RMI	10	0.005
http	XWeb 1.0	10	0.005
http	wg_httpd	10	0.005
http	Western Digital My Book http config	10	0.005
http	Web-Based Enterprise Management CIM serverOpenPegasus WBEM httpd	10	0.005
http	Satel ETHM-1 alarm control unit	10	0.005
http-proxy	MultiCertify http proxy	10	0.005
http	Oracle Application Server 10g httpd	10	0.005
http	Netgear FS728TP switch http config	10	0.005
http	monit httpd	10	0.005
http	ImagiaTek	10	0.005
http	Chain Cast support service	10	0.005
http	BlueIris	10	0.005
http	Axigen webmail httpd	10	0.005
http	Abyss httpd	10	0.005