Overview of services running on Port 17 UDP.
~107 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
qotd	Windows qotd		46321	42.995
no match	-/-	-/-	45842	42.55
http	lighttpd	1.4.19	15049	13.968
netbios-ssn			173	0.161
socks5			168	0.156
utorrent-udp	uTorrent UDP listener		83	0.077
dominoconsole	Lotus Domino Console		42	0.039
http			24	0.022