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	Version	Count	Percent
ssl	SSLv3		311952	62.602
ssl	TLSv1		126437	25.373
no match	-/-	-/-	14782	2.966
http	Apache	2.0.52	5293	1.062
http			4463	0.896
http	Apache		4412	0.885
ssl	Microsoft IIS SSL		3867	0.776
http	Apache	2	3417	0.686
chat	AIM or ICQ server		2528	0.507
http	SonicWALL		1536	0.308
http	Apache	2.0.51	955	0.192
http	Apache	2.2.6	770	0.155
http	Apache	2.2.8	732	0.147
http	Apache	2.2.3	725	0.145
http	Microsoft IIS httpd		713	0.143
http	PWS httpd	1.7.3.9	667	0.134
xml			627	0.126
http	Apache	1.3.29	614	0.123
http	Microsoft HTTPAPI httpd	2.0	534	0.107
http	Apache	1.3.20	522	0.105
http	Secure Computing Sidewinder firewall http admin		514	0.103
http	PWS httpd	1.7.3.13	456	0.092
http	Apache	2.0.63	433	0.087
http	lighttpd	1.4.19	422	0.085
http	Apache	2.2.16	340	0.068
http	Apache	2.2.22	317	0.064
http	Check Point SVN foundation httpd		283	0.057
openvpn	OpenVPN		270	0.054
http	GoAhead-Webs httpd		232	0.047
http	Apache	2.2.14	228	0.046
http	Apache	2.2.9	220	0.044
ssh	OpenSSH	5.6	217	0.044
http	lighttpd	1.4.29	203	0.041
ftp	FileZilla ftpd	0.9.34 beta	187	0.038
http	Apache	1.3.41	175	0.035
http	Apache	1.3.27	168	0.034
ftp	FileZilla ftpd	0.9.36 beta	159	0.032
directconnect	Direct Connect P2P		157	0.032
ssl	TLS	1.0	151	0.03
ssh	OpenSSH	5.2	146	0.029
http	thttpd	2.24	144	0.029
smtp			134	0.027
ssh	OpenSSH	4.3	124	0.025
ssh			124	0.025
ssh	Dropbear sshd	0.52	122	0.024
http	AIM	1.0	120	0.024
http	Apache	1.3.33	115	0.023
ssh	SCS sshd	3.2.9.1	112	0.022
ftp	Serv-U ftpd	5.2	111	0.022
vnc	VNC		110	0.022
ssh	OpenSSH	5.5p1 Debian 6+squeeze2	109	0.022
ssh	OpenSSH	5.1p1 Debian 3ubuntu1	100	0.02
http	Apache	2.2.15	98	0.02
http	Apache	2.2.21	96	0.019
http	Apache Tomcat/Coyote JSP engine	1.1	94	0.019
http	Embedded HTTP Server.		88	0.018
ssh	OpenSSH	5.9	87	0.017
http	Apache	2.2.17	86	0.017
ssh	OpenSSH	5.3	84	0.017
http	thttpd		81	0.016
http	Apache	2.0.46	77	0.015
http	thttpd	2.25b	76	0.015
ftp			73	0.015
http	(null)		69	0.014
http	Boa HTTPd	0.94.14rc21	69	0.014
telnet			67	0.013
ssh	OpenSSH	5.3p1 Debian 3ubuntu7	67	0.013
ssh	OpenSSH	5.9p1 Debian 5ubuntu1	65	0.013
http	Netwave IP camera http config		62	0.012
http	nginx		60	0.012
arcserve	ARCserve Discovery		60	0.012
http	Draytek Vigor ADSL router webadmin		59	0.012
http	Hikvision-Webs		56	0.011
http	Apache	2.2.11	56	0.011
ssh	OpenSSH	5.1p1 Debian 5	54	0.011
http	Apache	2.0.59	53	0.011
http	Apache	2.2.4	52	0.01
snpp	QuickPage SNPP	3.3	51	0.01
http	Allegro RomPager	4.06	51	0.01
http	Apache	1.3.6	49	0.01
http	Apache	1.3.37	49	0.01
telnet	Linux telnetd		46	0.009
ssh	OpenSSH	5.5p1 Debian 6+squeeze1	43	0.009
http	Apache	1.3.12	43	0.009
http	Apache	2.0.64	42	0.008
ftp	vsftpd	2.0.8 or later	42	0.008
http-proxy	Squid http proxy	2.6.STABLE12	41	0.008
http	Microsoft IIS httpd	6.0	40	0.008
http	Apache	2.2.19	39	0.008
http	Apache	2.2.20	37	0.007
ftp	Microsoft ftpd		37	0.007
ssh	OpenSSH	team2work.SEC.Stick.Server_1.1	36	0.007
http	III 100		36	0.007
snpp	HylaFAX SNPP	4.4.4	35	0.007
vnc	RealVNC Enterprise		34	0.007
http	GeoVision GeoHttpServer for webcams		34	0.007
ssh	OpenSSH	4.3p2 Debian 9etch2	33	0.007
ftp	Serv-U ftpd	6.0	32	0.006
ssh	OpenSSH	5.8	31	0.006
http	Boa HTTPd	0.94.13	31	0.006
ssh	OpenSSH	5.8p1 Debian 7ubuntu1	30	0.006
http	Avtech AVN801 network camera	1.0	30	0.006
vnc	RealVNC Personal		28	0.006
snpp	HylaFAX SNPP	6.0.4	27	0.005
http	Microsoft ISA httpd		26	0.005
ftp	glFTPd	2.01	26	0.005
ssh	OpenSSH	5.5p1 Debian 6	25	0.005
http	Jetty	6.1.x	25	0.005
ftp	Pure-FTPd		25	0.005
http	World Client WDaemon httpd	4.0	24	0.005
http	Allegro RomPager	4.51 UPnP/1.0	24	0.005
ssh	OpenSSH	5.5p1 Debian 4ubuntu6	23	0.005
snpp	HylaFAX SNPP	6.0.5	23	0.005
smtp	Microsoft Exchange smtpd		23	0.005
http	Apache	2.0.54	23	0.005
ftp	Serv-U ftpd	6.4	23	0.005
ftp	FileZilla ftpd	0.9.41 beta	23	0.005
ssh	Dropbear sshd	0.53.1	22	0.004
ssh	Dropbear sshd	0.51	22	0.004
http	uTorrent WebUI		22	0.004
http-proxy	Squid http proxy	2.7.STABLE9	22	0.004
http	Boa HTTPd	0.93.15	22	0.004
ssh	OpenSSH	5.8p1 Debian 1ubuntu3	20	0.004
ssh	OpenSSH	5.1	20	0.004
smtp	Postfix smtpd		20	0.004
http	http server 1.0		20	0.004
ssh	OpenSSH	3.9p1	18	0.004
snpp	HylaFAX SNPP	4.1.8	18	0.004
ssh	OpenSSH	6.0	17	0.003
ssh	OpenSSH	5.8p2_hpn13v11	17	0.003
ssh	OpenSSH	5.4p1	17	0.003
snpp	HylaFAX SNPP	4.0pl1	17	0.003
http-proxy	F5 BIG-IP load balancer http proxy		17	0.003
http	lighttpd	1.4.28	17	0.003
http	lighttpd	1.4.13	17	0.003
ssh	MikroTik RouterOS sshd		16	0.003
http	lighttpd	1.4.26	16	0.003
http	HomeLogic Gateway		16	0.003
http	Boa httpd		16	0.003
http	Apache	1.3.39	16	0.003
ftp	FileZilla ftpd	0.9.37 beta	16	0.003
vnc	Apple remote desktop vnc		15	0.003
telnet	Draytek Vigor ADSL router telnetd		15	0.003
ssh	OpenSSH	2.3.0 mikrotik 2.9	15	0.003
ssh	Dropbear sshd	2011.54	15	0.003
ssh	Bitvise WinSSHD		15	0.003
snpp	HylaFAX SNPP	4.2.1	15	0.003
http	uTorrent utserver web interface		15	0.003
http	nginx	0.7.67	15	0.003
http	Apache	1.3.34	15	0.003