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 Version Count Percent
no match-/--/-357941.928
chatAIM or ICQ server170719.998
http4945.787
httplighttpd1.4.294875.705
httplighttpd1.4.194014.698
whoisgwhois1892.214
httpMicrosoft IIS httpd1802.109
telnetLinux telnetd1261.476
irrMerit Internet Routing Registry951.113
httpMicrosoft HTTPAPI httpd2.0951.113
ssh941.101
ftpMicrosoft ftpd820.961
telnet710.832
vncVNC520.609
httpBoa HTTPd0.94.14rc21270.316
ftp260.305
httplighttpd220.258
whoisPublic Interest Registry whois server200.234
httpthttpd2.25b200.234
httpthttpd200.234
irrMerit Internet Routing Registry whoisd190.223
directconnectDirect Connect P2P160.187
smtpPostfix smtpd150.176