Overview of services running on Port 4999 TCP.
~10 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	Count	Percent
irc	Dancer ircd	3666	34.51
no match	-/-	3002	28.259
chat	AIM or ICQ server	1606	15.118
http	lighttpd	369	3.474
http		306	2.881
ssh	OpenSSH	215	2.024
http	Microsoft IIS httpd	200	1.883
telnet	Cisco router telnetd	149	1.403
http	Microsoft HTTPAPI httpd	112	1.054
vnc	VNC	92	0.866
ssh		85	0.8
http	Boa HTTPd	66	0.621
ftp	Microsoft ftpd	52	0.49
telnet		51	0.48
vtun	Vtun Virtual Tunnel	38	0.358
arcserve	ARCserve Discovery	35	0.329
ftp		33	0.311
socks5		31	0.292
http	nginx	31	0.292
http	WangWnagSimpleServer	23	0.217
ovm-manager	Oracle VM Manager	21	0.198
mysql	MySQL	19	0.179
pop3		18	0.169
smtp	Microsoft ESMTP	17	0.16
java-rmi	Java RMI	17	0.16
ftp	FileZilla ftpd	17	0.16
vnc	RealVNC Enterprise	14	0.132
upnp	Portable SDK for UPnP	13	0.122
openvpn	OpenVPN	13	0.122
vnc	RealVNC Personal	12	0.113
smtp		12	0.113
http	MiniServ	12	0.113
ftp	ProFTPD	12	0.113
upnp	Microsoft Windows UPnP	11	0.104
ssl	TLS	11	0.104
smtp	Microsoft Exchange smtpd	10	0.094