Overview of services running on Port 50003 TCP.
~97 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
remoting	MS .NET Remoting services					86911	89.387
no match						2731	2.809
chat	AIM or ICQ server					1810	1.862
http	thttpd					1618	1.664
http						716	0.736
http	Jetty	7.0.2.v20100331				613	0.63
http	lighttpd	1.4.19				389	0.4
ssl	TLSv1					317	0.326
http	Microsoft IIS httpd					183	0.188
http	Jetty	6.1.19				160	0.165
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		152	0.156
telnet						104	0.107
ssh			protocol 1.5			88	0.091
remoting	MS .NET Remoting services		French			72	0.074
http	Boa HTTPd	0.94.14rc21				71	0.073
vnc	VNC		protocol 3.8			50	0.051
ssl	TLS	1.0				44	0.045
ftp						43	0.044
ftp	ProFTPD	1.3.3		Unix		42	0.043
http	Ubicom	1.1				37	0.038
telnet	Linux telnetd			Linux		33	0.034
http	thttpd	2.25b				33	0.034
ftp	Microsoft ftpd			Windows		29	0.03
http	thttpd	2.19-MX Jul 1 2010			WAP	24	0.025
ftp	FileZilla ftpd	0.9.23 beta		Windows		24	0.025
http	WangWnagSimpleServer	1.0				21	0.022
http	thttpd	2.19-MX Oct 19 2011			WAP	21	0.022
http	micro_httpd					21	0.022
eggdrop	Eggdrop irc bot console	1.6.19	botname: GTI			21	0.022