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	Count	Percent
retrospect	Dantz Retrospect backup client		14319	48.835
http			3965	13.523
http	SonicWALL		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	422	1.439
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	120	0.409
http	Apache		104	0.355
http	Microsoft HTTPAPI httpd	2.0	100	0.341
ssh			98	0.334
http	Apache Tomcat/Coyote JSP engine	1.1	86	0.293
http	GoAhead-Webs		83	0.283
http	Netwave IP camera http config		78	0.266
http	Microsoft IIS httpd		77	0.263
http	thttpd	2.24 26oct2003	76	0.259
ftp	MikroTik router ftpd	3.28	76	0.259
http	Avtech AVN801 network camera	1.0	67	0.229
telnet			59	0.201
http	Apache	2.2.3	59	0.201
vnc	VNC		54	0.184
http	PDR-M800	1.0	50	0.171
arcserve	ARCserve Discovery		44	0.15
http	Boa HTTPd	0.94.14rc21	43	0.147
http	Apache	2.2.14	42	0.143
http	Apache	2.2.22	28	0.095
http	thttpd	2.25b 29dec2003	27	0.092
ftp			27	0.092
http	Hikvision-Webs		26	0.089
http	mini_httpd	1.19 19dec2003	23	0.078
http	Microsoft IIS httpd	7.5	23	0.078
http	Gadspot/Avtech AV787 webcam http config		22	0.075
http	Apache	2.0.52	22	0.075
ftp	Microsoft ftpd		20	0.068
ssh	OpenSSH	4.3	18	0.061
righteous-backup	R1Soft Righteous Backup		18	0.061
http	Mbedthis-Appweb	2.0.4	17	0.058
http	uc-httpd	1.0.0	16	0.055
http	thttpd		16	0.055
http-proxy	Squid http proxy	2.6.STABLE12	16	0.055
http	Microsoft IIS httpd	5.1	16	0.055
http	Apache	2.2.9	16	0.055
http	Apache	2.2.16	16	0.055