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 Version Count Percent
sslSSLv36337528.822
httpMicrosoft IIS httpd6.03248614.774
http137426.25
httpMicrosoft IIS httpd119045.414
httpSun GlassFish2.196194.375
no match-/--/-55392.519
ircDancer ircd40381.836
httpApache Tomcat/Coyote JSP engine1.137551.708
httpSonicWALL33241.512
httpIpswitch IMail Monitor web service8.2229151.326
httpApache23421.065
chatAIM or ICQ server22781.036
httpCTCFC1.019790.9
httpSun GlassFish2.1.117600.8
httpDD-WRT milli_httpd17330.788
httpMicrosoft HTTPAPI httpd2.016090.732
httpApache2.2.2213380.608
httpMikroTik router config httpd12790.582
httpApache2.2.312720.578
httpCherryPy httpd3.2.012170.553
httpAllegro RomPager4.51 UPnP/1.012020.547
httpNetwave IP camera http config10840.493
httpIpswitch IMail Monitor web service8.0510750.489
httpGoAhead-Webs httpd10620.483
httpSecure Computing Sidewinder firewall http admin10150.462
httpBoa HTTPd0.94.14rc2110050.457
httpIpswitch IMail web service8.1510020.456
httpTransmission BitTorrent management httpd9720.442
httpGeoVision GeoHttpServer for webcams9170.417
httpAvtech AVN801 network camera1.08390.382
httpVirata-EmWeb6.0.17810.355
httpApache2.2.147380.336
upnpConexant-EmWeb6.1.07230.329
httplighttpd1.4.286420.292
httpApache2.2.166390.291
httpAIM1.06300.287
httpuc-httpd1.0.06120.278
httpnginx6100.277
httpCross Web Server5730.261
remotingMS .NET Remoting services5500.25
httpMikroTik router http config5460.248
httplighttpd1.4.195160.235
httplighttpd1.4.295090.231
httpise GmbH HTTP-Server v2.05080.231
httpApache2.2.95040.229
httpHTTPD 1.04970.226
httpDraytek Vigor ADSL router webadmin4890.222
httpSagem F@st router httpd4800.218
httplighttpd1.4.204780.217
httpthttpd4650.211
httpmini_httpd1.19 19dec20034400.2
httpIntoto httpd1.04290.195
httpHikvision-Webs4290.195
httpBoa HTTPd0.93.154240.193
httplighttpd4110.187
httpIpswitch IMail Monitor web service8.153810.173
httpLinksys router http config3700.168
httpUnknown0.0 UPnP3470.158
httpD-Link DIR-300 WAP http admin3230.147
httpApache2.2.153110.141
sslTLS1.03060.139
httpApache2.2.173010.137
httpBoa HTTPd0.94.132960.135
httpIpswitch IMail web service8.222890.131
httpnginx1.2.02710.123
http-proxySquid http proxy2.6.STABLE212620.119
httpwebcamXP.Lite2530.115
httpuhttpd1.0.02520.115
httpMicrosoft IIS httpd7.52520.115
httpApache1.3.362510.114
httpWindWeb2.02430.111
httpIpswitch IMail Monitor web service7.072390.109
httpIpswitch IMail Monitor web service8.122330.106
httpIpswitch IMail web service8.052320.106
httpApache2.2.82320.106
httpIpswitch IMail web service7.152270.103
httpApache2.2.212230.101
xml-rpcABYSS httpd2070.094
httpthttpd2.25b2070.094
http-proxySymantec firewall http proxy2020.092
httplighttpd1.4.302020.092
httpIndy httpd8.1.2.17592010.091
httpGoAhead-Webs embedded httpd1990.091
httpAllegro RomPager4.07 UPnP/1.01960.089
httpNetgear DG834G router http config1950.089
httpIpswitch IMail Monitor web service8.031850.084
http-proxyOops! http proxy1840.084
httpuTorrent utserver web interface1790.081
httpeWON1790.081
httpIpswitch IMail Monitor web service12.51770.08
httpSonicWALL firewall http config1760.08
httpApache1.3.331750.08
httpQNAP TS-219P NAS http config1.01740.079
httphttp server 1.01710.078
httpMbedthis-Appweb2.0.41700.077
httpRouter1650.075
httplighttpd1.4.261620.074
httpApache2.2.111590.072
httpNetgear DG834 router http config1560.071
httpJetty6.1.x1490.068
httpGadspot/Avtech AV787 webcam http config1460.066
httpMicrosoft IIS httpd5.01430.065
telnet1420.065
httpDVR Systems webcam http interface1410.064
httpTP-LINK Router1360.062
httpIpswitch IMail Monitor web service8.211330.06
httpHTTP Software 1.11270.058
httpSBox server1260.057
httpApache0.6.51260.057
http-proxyHaproxy http proxy1240.056
httpApache2.0.591210.055
httpMicrosoft IIS httpd7.01160.053
httpBoa HTTPd0.94.111150.052
arcserveARCserve Discovery1140.052
httpDrcomServer1.01120.051
httpIpswitch IMail Monitor web service8.001110.05
httpIP_SHARER WEB1.01110.05
httpMicrosoft IIS httpd5.11090.05
httpJetty8.0.y.z-SNAPSHOT1070.049
httpEfangVHost Server1060.048
httpPDR-M8001.01050.048
httpIpswitch IMail Monitor web service7.131050.048
httpApache21050.048
http-proxyMikroTik http proxy1030.047
http-proxySquid http proxy1010.046
httpOpenDNS Guide1010.046
httpApache1.3.421000.045
httpHttpd1.0980.045
httpH3C-Miniware-Webs980.045
vncVNC960.044
ssh960.044
httpApache2.0.52950.043
httpApache2.0.63900.041
xml880.04
httpMiniWeb870.04
httpMicrosoft ISA httpd870.04
httpIpswitch IMail Monitor web service8.20870.04
httpApache2.0.48870.04
upnpMicrosoft Windows UPnP860.039
httpNcWebServer/1.3.37 (Unix) mod_ssl/2.8.28 OpenSSLNcWebServer/1.3.37 (Unix) mod_ssl/2.8.28 OpenSSL850.039
httpNetgear WGR614v9 WAP http config830.038
httpApache2.2.20830.038
httplighttpd1.4.23820.037
httpIpswitch IMail Monitor web service7.15820.037
intermapperInterMapper network monitor810.037
httpthttpd2.25b 29dec2003810.037
httpNetgear DGN1000 router http config810.037
httpTwistedWeb httpd8.2.0770.035
httpApache2.0.55770.035
httpApache1.3.41770.035
httpD-Link/Airlink IP webcam http config1.0750.034
httpOracle XML DB Enterprise Edition httpd740.034
httpApache2.2.4740.034
sslMicrosoft IIS SSL720.033
httpuTorrent WebUI710.032
httpApache2.2.0710.032
httpApache2.2.6700.032
httpTP-LINK WR340G WAP http config690.031
httpdcs-lig-httpd690.031
sslTLSv1680.031
httpApache2.2.19680.031
httpMS-SDK-HttpServer1.0670.03
httpIpswitch IMail Monitor web service6.06670.03
httpNAI EPO Agent framework660.03
httphttpd 1.1650.03
httpNetgear or Linksys WAP http config640.029
httpRouter Webserver620.028
httpIpswitch IMail Monitor web service8.01620.028
httpDigital Loggers Web Power Switch II http config620.028
httpApache2.0.53620.028
httpEmbedded HTTP Server600.027
httpWaveplus HTTPD590.027
httpsiyou server590.027
httpIpswitch IMail Monitor web service8.13590.027
httpGnway Web Server580.026
httpRapidLogic httpd1.1570.026
httpNetgear FVS318 router http config550.025
httpMiniServ0.01540.025
httpJetty7.5.4.v20111024540.025
httpIndy8.0.22540.025
httpBoa httpd540.025
sshOpenSSH4.3530.024
httphttpd530.024
httpApache1.3.20530.024
httpD-Link DCS-900 webcam http config520.024
httpUbicom httpd1.1500.023
httpJetty7.3.0.v20110203500.023
httpCisco IOS http config500.023
httpwebserver1.0490.022
httpNetgear WGR614v7 WAP http config490.022
httpJetty6.1.25490.022
httpTP-LINK WR740N WAP http config480.022
httpthttpd2.20c 21nov01480.022
httpApache2.2.13480.022
ftpMicrosoft ftpd480.022
shoutcastSHOUTcast server1.9.8470.021
http-proxySquid http proxy3.0.STABLE25470.021
http-proxySquid http proxy2.7.STABLE9470.021
httpMilestone XProtect video surveillance http interface470.021
httpJetty470.021
httpHTTPServer470.021
httpDreambox httpd460.021
httpApache1.3.28460.021
httpWYM httpd1.0450.02
httpNetgear DG834GT router http config450.02
httpApache Tomcat/Coyote JSP engine1.0450.02
httpTridium Niagara httpd1.1430.02
httpNetgear WNR3500L WAP http config430.02
httpTRENDnet TV-IP100 or TV-IP110 webcam display httpd420.019
httpMicrosoft-HTTPAPI1.0420.019
httpIpswitch IMail Monitor web service8.10420.019
httpSAP Message Server httpdrelease 700410.019
httpApache2.2.12410.019
httpLinksys PAP2 VoIP http config400.018
httpImagine Reloaded beta400.018
httpFVG318400.018
httpApache2.2.10400.018
socks-proxySocks4A390.018
httpGM Streaming Server httpd390.018
httpBuffalo AirStation http config390.018
httpnginx0.8.54380.017
httpNetgear WNR2000v2 WAP http config380.017
httpBaseHTTPServer0.3380.017
httpAvamar380.017
httpWebServer(IPCamera_Logo)370.017
httpUbicom1.1370.017
httpTechno Vision Security System http config2.0370.017
http-proxySquid http proxy3.1.19370.017
httpBenQ projector370.017
rtspAvtech MPEG4 DVR control rtspd360.016
httpWebs360.016
httpLotus Domino httpd360.016
httpJetty6.0.2360.016
httpApache2.0.64360.016
httpAirlink 101 or TRENDnet TVIP-422w webcam http config360.016
httpwebcamXP httpd5350.016
httpnginx1.0.5350.016
httpNetgear WNR1000v3 WAP http config350.016
shoutcast-publishingSHOUTcast publishing port340.015
httpTRENDnet TV-IP110w or TV-IP422W webcam display httpd340.015
httpQNAP TS-109-II NAS http config1.0340.015
httpMicrosoft Windows Media Server9.01.01.5001340.015
httpJetty6.1.26340.015
httpChipPC Extreme httpd340.015
httpBoa HTTPd0.94.14rc18340.015
httpWorld Client WDaemon httpd4.0330.015
httplighttpd1.4.13330.015
httpTP-LINK WR841N WAP http config320.015
httpRWAPM X-Server 32bit Apache2.2.10 (Win32) PHP320.015
httpIpswitch IMail Monitor web service8.02320.015
httpTP-LINK WR941N WAP http config310.014
httpFnord httpd1.9310.014
httpADTRAN310.014
httpADH-Web httpd310.014
httpJettynull (Windows 2003 5.2 x86)300.014
httpIpswitch IMail Monitor web service5.05300.014
httpIpswitch IMail Monitor web service4.10300.014
httpD-Link DI-524 http config300.014
httpBoa HTTPd0.92o300.014
rtsp290.013
httpthttpd2.19-MX Jul 1 2010290.013
httpPasteWSGIServer0.5280.013
httpOwnServer1.0280.013
httpIceWarp webmail httpd8.3280.013
httpHP Integrated Lights-Out http config280.013
httpD-Link DI-804HV http config280.013
httpCitrix Metaframe ICA Browser280.013
httpWEB SERVER270.012
httpTP-LINK WR541G/542G WAP http config270.012
http-proxy3Proxy http proxy270.012
httpNEC Electra Elite IPK II WebPro270.012
httpMicrosoft HTTPAPI httpd1.0270.012
httpGoAhead-Webs270.012
sslmulti-vendor SSL260.012
ircUnreal ircd260.012
httpnginx0.7.67260.012
httpnginx0.7.65260.012
httpIpswitch IMail Monitor web service4.07260.012
httpGrandstream HT502 VoIP router http config260.012
httpD-Link router/Airlink NAS http config260.012
httpD-Link DCS-920 webcam http config260.012
httpXBMC Web Media Manager250.011
httpWinstone Servlet Engine0.9.10250.011
httpWebFS httpd1.21250.011
httpuClinux-httpd0.2.2250.011
httpnginx0.8.44250.011
httpMobotix Camera http config250.011
httplinux250.011
httpKerio MailServer http config250.011
httpJetty7.4.5.v20110725250.011
httpJetty7.4.5.fuse20111017250.011
ftp250.011
httpSun GlassFish Open Source Edition3.1.1240.011
httpNetgear DGN2000 router http config240.011
httpIP_SHARER WEB 1.0240.011
httpTornado230.01
httpSpeedr0.8.0230.01
ftpvsftpd2.0.8 or later230.01
httpuhttpduhttpd220.01
httpSwitch220.01
httpNetwork Camera220.01
httpNetgear DG834PN router http config220.01
httpNetgear DG834 FR WAP http config220.01
httpMultView WEB Server V1.1220.01
httpHttpFileServer httpd2.2f220.01
httpESET NOD32 anti-virus update httpd220.01
httpDrayTek Vigor 3300 router http config220.01
httpDelta Networks Embedded HTTPD1.00220.01
httpDavid WebBox httpd11.00a.0717220.01
httpBoa HTTPd0.94.14rc18-ipcam220.01
httpApache1.3.27220.01
httpantid220.01
httpAllegro RomPager4.03220.01
httpVirgin Super Hub media player http config210.01
httpNetgear CVG834G cable modem http config210.01
httpMono-HTTPAPI1.0210.01
httpLuCI Lua http config210.01
httpD-Link DCS-910 webcam http config210.01
vncRealVNC Personal200.009
httpZimbra http config200.009
httpVMware ESXi Server httpd200.009
httpSeagate Black Armor 440 NAS http config200.009
httpNetgear DG834 http config200.009
httpMbedthis-Appweb2.4.2200.009
httplighttpd1.4.18200.009
httpIndy9.0.11200.009
httpGoldStar iPECS 50B PBX http config200.009
httpCherryPy httpd3.1.2200.009
httpCCcam card sharing system http config200.009
httpApache2.4.1200.009
httpApache2.3.8200.009
httpVivotek 3102 Camera http config190.009
httpNT5.0 UPnP190.009
httpNewCS satellite card sharing system http config190.009
httpLinksys RVS4000 security router http config190.009
httpJetty6.1.8190.009
httpJetty6.1.19190.009
httpJetty5.1.2190.009
httpBaseHTTPServer0.2190.009
vncRealVNC Enterprise180.008
smtpPostfix smtpd180.008
httpUltiDev Cassini httpd2.1.4.3180.008
httpSmarterTools httpd2.0.4562.18624180.008
http-proxyNetApp NetCache http proxy6.0.5P1180.008
http-proxyMicrosoft Foundation Class httpd1.0180.008
httpnginx1.0.11180.008
httpNetgear WNR3500 WAP http config180.008
httpNetgear WGR614v6 WAP http config180.008
httpMiniServ1.580180.008
httpMicrosoft IIS180.008
httpJetty7.x.y-SNAPSHOT180.008
httpJetty6.1.5180.008
httpIcecast streaming media server180.008
httpHenry httpd1.1180.008
httpEngine 12.6.1.370180.008
httpEmbedded HTTP Server.180.008
httpCrushFTP httpd180.008
httpCherryPy httpd3.2.0rc1180.008
httpWorld Client WDaemon httpd3.0170.008
httpW3MFC1.68170.008
httpVCS-VideoJet-Webserver170.008
httpthttpd2.19-MX Oct 19 2011170.008
httpSun GlassFish Open Source Edition3.1170.008
httpSiemens Gigaset A580 or S450 VoIP phone http config170.008
httpSagem Livebox WAP http config170.008
httpNetgear DG632 router http config170.008
httpMicrosoft-HTTPAPI2.0170.008
httpJetty6.1.14170.008
httpGoAhead httpd170.008
httpDavid WebBox httpd11.00a.0636170.008
httpApache2.0.54170.008
httpApache1.3.34170.008
httpApache1.3.29170.008
httpVBrick DME v1.0160.007
httpTridium Niagara httpd3.5.34160.007
httpthttpd2.25b-lxc 29dec2003160.007
httpthttpd2.19-MX Apr 26 2011160.007
httpSun GlassFish Open Source Edition3.0.1160.007
http-proxyFreeProxy http proxy4.50160.007
http-proxyF5 BIG-IP load balancer http proxy160.007
httpPower MOD by emits.eu160.007
httpnginx1.0.0160.007
httpMaipu-Webs160.007
httpHomeSeer Home Control Web Interface160.007
httpDavid-WebBox12.00a (0781) WIN32160.007
httpAPC SmartUPS http config160.007
httpApache6.6.6160.007
secure-socketCA Secure Socket Adapter150.007
httpWebLogic httpd150.007
httpthttpd2.05p 09nov99150.007
httpTeamViewer httpd150.007
httpOracle GlassFish3.1.2150.007
httpnginx1.2.1150.007
httpMiktotik Dude network monitor150.007
httplighttpd1.4.31150.007
httpJuanNiu11.12.20150.007
httpJuanNiu11.07.26150.007
httpJetty6.1.6150.007
httpIndy10.0.52150.007
httpD-Link DIR-600 WAP http config2.10150.007
httpApache2.0.40150.007
ftpPure-FTPd150.007