Overview of services running on Port 900 TCP.
~36 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
http			9583	26.135
http	Check Point VPN-1/UTM NGX R70 firewall http admin		5031	13.721
http	Check Point Firewall-1 Client Authentication httpd		4156	11.334
no match	-/-	-/-	3947	10.764
http	SonicWALL		3529	9.624
chat	AIM or ICQ server		1601	4.366
netsaint	Netsaint status daemon		868	2.367
http	AIM	1.0	669	1.825
http	awweb	1.0	662	1.805
http	Apache		544	1.484
http	Microsoft IIS httpd	6.0	412	1.124
http	lighttpd	1.4.19	382	1.042
http	Httpd	1.0	372	1.015
http	lighttpd	1.4.29	282	0.769
vnc	VNC		196	0.535
http	Avtech AVN801 network camera	1.0	167	0.455
http	awweb	awweb	153	0.417
http	Netwave IP camera http config		149	0.406
http	kProxyService		130	0.355
http	Apache	2.2.3	117	0.319
http	DrcomServer1.0		116	0.316
http	Microsoft IIS httpd	7.5	112	0.305
http	Apache Tomcat/Coyote JSP engine	1.1	106	0.289
http	Microsoft IIS httpd		102	0.278
ssh			90	0.245
http	Apache	2.2.16	74	0.202
http	thttpd	2.24 26oct2003	73	0.199
http	GoAhead-Webs		72	0.196
http	mini_httpd	1.19 19dec2003	66	0.18
http	Apache	2.2.14	64	0.175
smtp	Exim smtpd		58	0.158
http	Hikvision-Webs		58	0.158
http	Microsoft IIS httpd	7.0	57	0.155
http	Checkpoint firewall client authentication httpd		56	0.153
http	PDR-M800	1.0	54	0.147
ftp	Microsoft ftpd		51	0.139
http	Apache	2.2.22	49	0.134
http	uc-httpd	1.0.0	45	0.123
telnet			44	0.12
ssh	OpenSSH	4.3	43	0.117
http	GoAhead-Webs embedded httpd		43	0.117
http	Boa HTTPd	0.94.14rc21	39	0.106
http	thttpd	2.25b 29dec2003	38	0.104
http	D-Link DIR-300 WAP http admin		37	0.101
vnc			35	0.095
http	Microsoft HTTPAPI httpd	2.0	34	0.093
http	thttpd		32	0.087
http	DVR Systems webcam http interface		30	0.082
http	Cross Web Server		30	0.082
http	addUPI Server 1.2		30	0.082
directconnect	Direct Connect P2P		29	0.079
http	MikroTik router config httpd		28	0.076
http	Mbedthis-Appweb	2.0.4	27	0.074
http	Apache	2.2.9	27	0.074
http	Gadspot/Avtech AV787 webcam http config		25	0.068
http	GeoVision GeoHttpServer for webcams		24	0.065
ssh	OpenSSH	4.3p2 Debian 9etch3	22	0.06
ssh	OpenSSH	2.3.0 mikrotik 2.9	22	0.06
http	Microsoft IIS httpd	5.0	21	0.057
http	nginx	0.6.32	20	0.055
http	Boa HTTPd	0.94.13	19	0.052
http	Apache	2.2.8	19	0.052
ssh	OpenSSH	3.9p1	18	0.049
http	Apache	2.0.53	18	0.049
ftp			18	0.049
http	RemotelyAnywhere remote PC management httpd	8.0.668	17	0.046
http	WYM httpd	1.0	16	0.044
http-proxy	Squid http proxy	2.6.STABLE12	16	0.044
http	Apache	2.2.15	16	0.044
smtp			15	0.041
rsync			15	0.041
http	QNAP TS-219P NAS http config	1.0	15	0.041
http	lighttpd	1.4.20	15	0.041
http	GoAhead-Webs httpd		15	0.041