Overview of services running on Port 406 TCP.
~8 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
chat	AIM or ICQ server	2306	28.343
no match	-/-	1459	17.933
http		1014	12.463
http	lighttpd	709	8.714
http	Apache	388	4.769
imsp		227	2.79
http	GoAhead-Webs httpd	151	1.856
http	Microsoft HTTPAPI httpd	141	1.733
http	Apache Tomcat/Coyote JSP engine	113	1.389
sip	thttpd/2.24 26oct2003	112	1.377
ssh		99	1.217
ssh	OpenSSH	89	1.094
http	Boa HTTPd	78	0.959
http-proxy	Squid http proxy	77	0.946
sip	mini_httpd/1.19 19dec2003	61	0.75
vnc	VNC	59	0.725
http	Allegro RomPager	53	0.651
telnet		52	0.639
arcserve	ARCserve Discovery	47	0.578
http	Hikvision-Webs	43	0.529
sip	thttpd/2.25b 29dec2003	34	0.418
mysql	MySQL	31	0.381
http	BusyBox httpd	30	0.369
http	Microsoft IIS httpd	28	0.344
http	nginx	25	0.307
ftp	Microsoft ftpd	23	0.283
sip	Mbedthis-AppWeb/2.0.4	19	0.234
rtsp		19	0.234
ftp	vsftpd (before 2.0.8) or WU-FTPD	19	0.234
smtp	Microsoft ESMTP	17	0.209
http	GeoVision GeoHttpServer for webcams	17	0.209
ftp	ProFTPD	17	0.209
ftp	FileZilla ftpd	17	0.209
ftp		17	0.209
directconnect	Direct Connect P2P	17	0.209
sip		15	0.184
upnp	Microsoft Windows UPnP	14	0.172
http	RemotelyAnywhere remote PC management httpd	14	0.172
vnc	RealVNC Enterprise	13	0.16
smtp	Microsoft Exchange smtpd	13	0.16
smtp		13	0.16
ftp	Pure-FTPd	13	0.16
http-proxy	MikroTik http proxy	12	0.147
http	http server 1.0	12	0.147
http	WebLogic httpd	11	0.135
http	Boa httpd	11	0.135