Overview of services running on Port 444 TCP.
~498 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
ssl	SSLv3	311952	62.602
ssl	TLSv1	126437	25.373
http	Apache	20396	4.093
no match	-/-	14782	2.966
http		4463	0.896
ssl	Microsoft IIS SSL	3867	0.776
chat	AIM or ICQ server	2528	0.507
ssh	OpenSSH	1682	0.338
http	SonicWALL	1536	0.308
http	PWS httpd	1135	0.228
http	Microsoft IIS httpd	790	0.159
http	lighttpd	699	0.14
xml		627	0.126
http	Microsoft HTTPAPI httpd	538	0.108
http	Secure Computing Sidewinder firewall http admin	514	0.103
ftp	FileZilla ftpd	418	0.084
http	thttpd	349	0.07
http	Check Point SVN foundation httpd	283	0.057
openvpn	OpenVPN	270	0.054
snpp	HylaFAX SNPP	236	0.047
http	GoAhead-Webs httpd	232	0.047
ssh	Dropbear sshd	207	0.042
ftp	Serv-U ftpd	207	0.042
http	nginx	178	0.036
directconnect	Direct Connect P2P	157	0.032
ssl	TLS	151	0.03
smtp		134	0.027
http	Boa HTTPd	132	0.026
ssh	SCS sshd	127	0.025
ssh		124	0.025
http	AIM	120	0.024
vnc	VNC	110	0.022
http-proxy	Squid http proxy	106	0.021
http	Apache Tomcat/Coyote JSP engine	94	0.019
http	Allegro RomPager	90	0.018
http	Embedded HTTP Server.	88	0.018
ftp		73	0.015
http	(null)	69	0.014
telnet		67	0.013
ssh	Bitvise WinSSHD	66	0.013
http	Netwave IP camera http config	62	0.012
snpp	QuickPage SNPP	61	0.012
arcserve	ARCserve Discovery	60	0.012
http	Draytek Vigor ADSL router webadmin	59	0.012
http	Hikvision-Webs	56	0.011
ftp	Microsoft ftpd	47	0.009
telnet	Linux telnetd	46	0.009
ftp	vsftpd	45	0.009
mysql	MySQL	43	0.009
http	MiniServ	43	0.009
ftp	ProFTPD	43	0.009
http	III 100	36	0.007
http	Jetty	35	0.007
vnc	RealVNC Enterprise	34	0.007
http	World Client WDaemon httpd	34	0.007
http	GeoVision GeoHttpServer for webcams	34	0.007
http	Avtech AVN801 network camera	30	0.006
vnc	RealVNC Personal	28	0.006
http	Microsoft ISA httpd	26	0.005
ftp	glFTPd	26	0.005
smtp	Microsoft ESMTP	25	0.005
ftp	Pure-FTPd	25	0.005
ftp	Gene6 ftpd	25	0.005
smtp	Microsoft Exchange smtpd	23	0.005
http	uTorrent WebUI	22	0.004
http	Indy httpd	21	0.004
http	David WebBox httpd	21	0.004
smtp	Postfix smtpd	20	0.004
http	http server 1.0	20	0.004
http-proxy	F5 BIG-IP load balancer http proxy	17	0.003
ssh	MikroTik RouterOS sshd	16	0.003
http	HomeLogic Gateway	16	0.003
http	Boa httpd	16	0.003
vnc	Apple remote desktop vnc	15	0.003
telnet	Draytek Vigor ADSL router telnetd	15	0.003
http	uTorrent utserver web interface	15	0.003
http	Serv-U	15	0.003
http	Fnord httpd	15	0.003
vnc		14	0.003
http	PDR-M800	14	0.003
http	David-WebBox	14	0.003
ssh	SunSSH	13	0.003
smtp	IMail NT-ESMTP	13	0.003
smtp	Exim smtpd	12	0.002
ilo	HP ProLiant ML350 Interactive Lights Out	12	0.002
http	Ubicom	12	0.002
http	mini_httpd	12	0.002
snpp	Sendpage SNPP	11	0.002
rtsp		11	0.002
http	Mbedthis-Appweb	11	0.002
ssh	WeOnlyDo sshd	10	0.002
loglogic	LogLogic protocol	10	0.002
http	VNC Server Enterprise Edition	10	0.002
http	Virata-EmWeb	10	0.002
http	MikroTik router http config	10	0.002
http	MikroTik router config httpd	10	0.002
http	Dreambox httpd	10	0.002