Overview of services running on Port 50001 TCP.
~19 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
no match	-/-	-/-	7305	37.234
http	thttpd		3819	19.466
chat	AIM or ICQ server		1590	8.104
http			1303	6.642
http	2Wire HomePortal router http config		679	3.461
telnet	Linux telnetd		392	1.998
ssl	TLSv1		373	1.901
http	lighttpd	1.4.19	326	1.662
ssh	OpenSSH	4.3	254	1.295
http	Microsoft HTTPAPI httpd	2.0	233	1.188
http	Microsoft IIS httpd		218	1.111
ssl	TLS	1.0	211	1.075
telnet			201	1.025
http	MiniServ	0.01	146	0.744
ftp	FileZilla ftpd	0.9.23 beta	138	0.703
oracle-tns	Oracle TNS Listener		136	0.693
vnc	VNC		117	0.596
http	MiniServ	1.570	110	0.561
http	Boa HTTPd	0.94.14rc21	107	0.545
ssh			75	0.382
http	Agranat-EmWeb	5.2.6	69	0.352
ftp			67	0.342
http	WYM httpd	1.0	60	0.306
remoting	MS .NET Remoting services		56	0.285
ftp	Microsoft ftpd		53	0.27
http	Jetty	6.1.x	49	0.25
http	micro_httpd		40	0.204
http	thttpd	2.25b	38	0.194
ftp	ProFTPD	1.3.3	35	0.178
http	thttpd	2.19-MX Jul 1 2010	33	0.168
vnc			28	0.143
http	thttpd	2.19-MX Apr 26 2011	28	0.143
openvpn	OpenVPN		26	0.133
http	thttpd	2.19-MX Oct 19 2011	26	0.133
socks5			22	0.112
netbios-ssn			21	0.107
ssh	OpenSSH	5.3	19	0.097
http	nginx	0.6.32	19	0.097
vnc	RealVNC Enterprise		18	0.092
http	thttpd	2.19-MX Sep 9 2010	17	0.087
ftp	Pure-FTPd		17	0.087
ftp	FileZilla ftpd	0.9.40 beta	16	0.082
arcserve	ARCserve Discovery		16	0.082
http	http server 1.0		15	0.076