Overview of services running on Port 60021 TCP.
~49 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
ftp	Netgear broadband router or ZyXel VoIP adapter ftpd	41488	83.117
no match	-/-	1812	3.63
chat	AIM or ICQ server	1757	3.52
ftp	ProFTPD	922	1.847
ftp	MikroTik router ftpd	909	1.821
ftp	vsftpd	475	0.952
http	lighttpd	367	0.735
http		323	0.647
ftp		212	0.425
http	Microsoft IIS httpd	128	0.256
ftp	FileZilla ftpd	104	0.208
http	Microsoft HTTPAPI httpd	97	0.194
ssh	OpenSSH	95	0.19
http	thttpd	93	0.186
ssh		89	0.178
ftp	Microsoft ftpd	89	0.178
ftp	Serv-U ftpd	80	0.16
http	Allegro-Software-RomPager	69	0.138
telnet		67	0.134
ftp	Pure-FTPd	53	0.106
http	Cisco IOS http config	47	0.094
vnc	VNC	46	0.092
http	Boa HTTPd	46	0.092
http	Virata-EmWeb	28	0.056
ftp	Dreambox ftpd	27	0.054
mysql	MySQL	25	0.05
http	Ubicom	23	0.046
http	micro_httpd	23	0.046
ftp	Gene6 ftpd	23	0.046
ftp	WS FTPd	22	0.044
ftp	oftpd	20	0.04
http	nginx	18	0.036
http	Router	16	0.032
ftp	ProFTPD or KnFTPD	13	0.026
arcserve	ARCserve Discovery	13	0.026
http	GoAhead-Webs httpd	12	0.024
telnet	Cisco 1721 router telnetd	11	0.022
ssh	Dropbear sshd	11	0.022
vnc	RealVNC Enterprise	10	0.02
http	Allegro RomPager	10	0.02