Overview of services running on Port 113 TCP.
~199 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 InfoOSDevicetypeCount Percent
identpidentdcould be fair-identd12268161.642
no match2002610.062
identHP-UX identdHP-UX136066.836
identauthd124866.274
identpidentd45312.277
httpSonicWALLfirewall34401.728
http29071.461
chatAIM or ICQ server23041.158
identWindows21331.072
identLinux-identdLinux19200.965
identgidentd14990.753
identGTA GB-Ware firewall identdfirewall13560.681
httpBoa HTTPd0.94.1311950.6
httpAIM1.06570.33
identNullidentdClaimed user: foobar5400.271
identFTPRush FTP client identdWindows5180.26
identMinidentd or fakeidentd5080.255
httplighttpd1.4.194120.207
tcpwrappedBSD TCP Wrappersauth2570.129
identslident2450.123
httpMicrosoft IIS httpd2400.121
httpApache2.2.162080.105
httplighttpd1.4.292070.104
identInternet Rex identd1510.076
httpNetwave IP camera http configwebcam1430.072
httpMicrosoft HTTPAPI httpd2.0SSDP/UPnPWindows1290.065
httpMicrosoft IIS httpd6.0Windows1250.063
pop3pwMercury/32 poppass serviceWindows1240.062
httpDrcomServer1.01170.059
httpGoAhead-Webs httpd1120.056
httpAvtech AVN801 network camera1.0UPnP 1.0webcam1010.051
httpthttpd2.24990.05
httpApache2.2.14960.048
identTrillian identdName foobar920.046
httpApache Tomcat/Coyote JSP engine1.1900.045
identBorderware Firewall identdfirewall820.041
vncVNCprotocol 3.8650.033
ftp630.032
httpBoa HTTPd0.94.14rc21580.029
httpHikvision-Webs570.029
httpmini_httpd1.19 19dec2003560.028
identWindows NT identdWindows550.028
arcserveARCserve Discovery550.028
httpPDR-M8001.0500.025
httpthttpd2.25b450.023
httpuc-httpd1.0.0440.022
httpthttpd2.24 26oct2003440.022
httpApache420.021
sshOpenSSH5.2p1protocol 1.99370.019
sshMikroTik RouterOS sshdprotocol 2.0Linuxrouter320.016
httpGoAhead-Webs310.016
httpMbedthis-Appweb2.0.4270.014
httpthttpd260.013
identCacheFlow identdCacheOS250.013
httpuTorrent WebUIWindows250.013
http-proxySquid http proxy2.6.STABLE12250.013
sshprotocol 1.5240.012
httpGeoVision GeoHttpServer for webcamswebcam240.012
ftpMicrosoft ftpdWindows240.012
directconnectDirect Connect P2PWindows230.012
httpGadspot/Avtech AV787 webcam http configwebcam220.011
httpCross Web Server220.011
identmidentd210.011
httplighttpd210.011
httpApacheSSL-only mode210.011
httpApache2.2.3(CentOS)210.011
telnet200.01
httplighttpd1.4.26200.01
httpApache2.0.53(Win32) PHP/5.1.4200.01