Overview of services running on Port 636 TCP.
~98 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	Info	OS	Devicetype	Count	Percent
ssl	TLSv1					67343	68.694
ssl	SSLv3					21036	21.458
ssl	Microsoft IIS SSL			Windows		3233	3.298
chat	AIM or ICQ server					2300	2.346
no match						1666	1.699
http						414	0.422
http	lighttpd	1.4.19				407	0.415
http	Microsoft IIS httpd					194	0.198
http	GoAhead-Webs httpd					129	0.132
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		116	0.118
http	thttpd	2.24				100	0.102
ssh			protocol 1.5			95	0.097
telnet						46	0.047
arcserve	ARCserve Discovery					39	0.04
http	Hikvision-Webs					36	0.037
vnc	VNC		protocol 3.8			35	0.036
ssl	multi-vendor SSL					34	0.035
http	thttpd	2.25b				33	0.034
http	Boa HTTPd	0.94.14rc21				32	0.033
http	Apache Tomcat/Coyote JSP engine	1.1				31	0.032
ftp						23	0.023
http-proxy	Squid http proxy	2.6.STABLE12				22	0.022