Overview of services running on Port 497 TCP.
~29 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
retrospect	Dantz Retrospect backup client					14319	48.835
http						3944	13.451
http	SonicWALL				firewall	3483	11.879
chat	AIM or ICQ server					2157	7.357
no match						1021	3.482
http	AIM	1.0				644	2.196
http	lighttpd	1.4.19				421	1.436
http	lighttpd	1.4.29				313	1.067
http	DrcomServer1.0					122	0.416
retrospect	Dantz Retrospect	6.0				121	0.413
http	Microsoft IIS httpd	6.0		Windows		120	0.409
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		100	0.341
ssh			protocol 1.5			95	0.324
http	GoAhead-Webs					83	0.283
http	Apache Tomcat/Coyote JSP engine	1.1				82	0.28
http	Netwave IP camera http config				webcam	78	0.266
http	thttpd	2.24 26oct2003				76	0.259
http	Microsoft IIS httpd					76	0.259
ftp	MikroTik router ftpd	3.28			router	76	0.259
http	Avtech AVN801 network camera	1.0	UPnP 1.0		webcam	67	0.229
telnet						58	0.198
http	Apache		SSL-only mode			56	0.191
http	PDR-M800	1.0				50	0.171
http	Apache					48	0.164
arcserve	ARCserve Discovery					44	0.15
http	Boa HTTPd	0.94.14rc21				43	0.147
vnc	VNC		protocol 3.8			33	0.113
http	thttpd	2.25b 29dec2003				27	0.092
ftp						27	0.092
http	Hikvision-Webs					26	0.089
http	Apache	2.2.3	(Red Hat)			24	0.082
http	mini_httpd	1.19 19dec2003				23	0.078
http	Microsoft IIS httpd	7.5		Windows		23	0.078
http	Gadspot/Avtech AV787 webcam http config				webcam	22	0.075
ftp	Microsoft ftpd			Windows		20	0.068