Overview of services running on Port 43 TCP.
~8 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
no match-/-357941.928
chatAIM or ICQ server170719.998
httplighttpd93410.942
http4945.787
httpMicrosoft IIS httpd1982.32
whoisgwhois1892.214
telnetLinux telnetd1261.476
sshOpenSSH1191.394
httpMicrosoft HTTPAPI httpd961.125
irrMerit Internet Routing Registry951.113
ssh941.101
ftpMicrosoft ftpd881.031
telnet710.832
vncVNC520.609
httpthttpd470.551
httpBoa HTTPd440.515
ftp260.305
mysqlMySQL210.246
ftpFileZilla ftpd210.246
whoisPublic Interest Registry whois server200.234
irrMerit Internet Routing Registry whoisd190.223
httpnginx190.223
sshDropbear sshd170.199
smtpMicrosoft ESMTP160.187
directconnectDirect Connect P2P160.187
smtpPostfix smtpd150.176
ftpProFTPD150.176
sslTLS130.152
backdoorOptixPro backdoor130.152
sshSCS sshd120.141
smtp120.141
openvpnOpenVPN120.141
whoisrwhois110.129
httpGeoVision GeoHttpServer for webcams110.129
ftpvsftpd (before 2.0.8) or WU-FTPD110.129
ftpPure-FTPd110.129
sshICE_4_All backdoor sshd100.117
smtpMicrosoft Exchange smtpd100.117
httpPanasonic webcam http config100.117