Overview of services running on Port 42 UDP.
~28 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
no match						20634	71.154
http	lighttpd	1.4.19				8200	28.277
netbios-ssn						78	0.269
socks5						61	0.21