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	Version	Info	OS	Devicetype	Count	Percent
wins	Microsoft Windows Wins			Windows		36039	62.684
no match						12219	21.253
donkey	MLDonkey multi-network P2P server					3609	6.277
chat	AIM or ICQ server					1633	2.84
ssh	OpenSSH	4.3	protocol 2.0			485	0.844
http	lighttpd	1.4.19				327	0.569
http						282	0.49
ssh	OpenSSH	5.3	protocol 2.0			231	0.402
ftp	ProFTPD	1.3.3		Unix		225	0.391
ftp	ProFTPD	1.2.10		Unix		220	0.383
http	Microsoft IIS httpd					149	0.259
telnet	Polycom VoIP phone debug telnetd				VoIP phone	126	0.219
ftp	ProFTPD	1.3.0		Unix		119	0.207
ssh	OpenSSH	4.5p1	FreeBSD 20061110; protocol 2.0	FreeBSD		114	0.198
ssh	OpenSSH	5.5p1 Debian 6+squeeze2	protocol 2.0	Linux		92	0.16
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		84	0.146
ssh			protocol 1.5			82	0.143
ftp						58	0.101
ssh	OpenSSH	5.5p1 Debian 6+squeeze1	protocol 2.0	Linux		57	0.099
ssh	OpenSSH	5.3p1 Debian 3ubuntu7	Ubuntu Linux; protocol 2.0	Linux		54	0.094
telnet						52	0.09
ssh	OpenSSH	3.9p1	protocol 2.0			50	0.087
ftp	Microsoft ftpd			Windows		47	0.082
ssh	OpenSSH	5.1p1 Debian 5	protocol 2.0	Linux		46	0.08
ssh	OpenSSH	5.8p2-hpn13v11	protocol 2.0	FreeBSD		38	0.066
ssh	OpenSSH	5.9p1 Debian 5ubuntu1	Ubuntu Linux; protocol 2.0	Linux		34	0.059
ssh	Kojoney SSH honeypot		protocol 2.0			34	0.059
ssh	OpenSSH	5.8p1 Debian 1ubuntu3	Ubuntu Linux; protocol 2.0	Linux		31	0.054
ssh	MikroTik RouterOS sshd		protocol 2.0	Linux	router	23	0.04
vnc	VNC		protocol 3.8			22	0.038
http	Boa HTTPd	0.94.14rc21				21	0.037
ftp	FileZilla ftpd	0.9.41 beta		Windows		20	0.035