Overview of services running on Port 42 TCP.
~57 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
winsMicrosoft Windows Wins3603962.684
no match-/-1221921.253
donkeyMLDonkey multi-network P2P server36096.277
chatAIM or ICQ server16332.84
sshOpenSSH15712.733
ftpProFTPD5991.042
httplighttpd3270.569
http2830.492
httpMicrosoft IIS httpd1490.259
telnetPolycom VoIP phone debug telnetd1260.219
ssh930.162
httpMicrosoft HTTPAPI httpd840.146
ftp580.101
ftpMicrosoft ftpd550.096
telnet520.09
ftpFileZilla ftpd410.071
sshDropbear sshd350.061
sshKojoney SSH honeypot340.059
vncVNC290.05
httpthttpd290.05
httpBoa HTTPd240.042
sshMikroTik RouterOS sshd230.04
httpnginx230.04
mysqlMySQL190.033
ftpPure-FTPd170.03
smtpMicrosoft ESMTP160.028
smtpExim smtpd140.024
telnetLinux telnetd130.023
ftpvsftpd120.021
ftpMikroTik router ftpd110.019
smtpMicrosoft Exchange smtpd100.017
smtp100.017
ftpServ-U ftpd100.017
directconnectDirect Connect P2P100.017
arcserveARCserve Discovery100.017