Overview of services running on Port 3531 TCP.
~18 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
http						3853	21.025
irc	Dancer ircd					3550	19.371
http	SonicWALL				firewall	3394	18.52
chat	AIM or ICQ server					1407	7.678
http	Apache	2.2.8	(Ubuntu) PHP/5.2.4-2ubuntu5.24 with Suhosin-Patch			912	4.977
no match						859	4.687
http	AIM	1.0				635	3.465
http	lighttpd	1.4.29				409	2.232
http	lighttpd	1.4.19				362	1.975
kazaa-peerpoint	KaZaA P2P client Peer Point Manager					259	1.413
http	Microsoft IIS httpd	6.0		Windows		209	1.14
http-proxy	EZproxy web proxy					106	0.578
http	DrcomServer1.0					103	0.562
http	TBS	R2 UPnP				101	0.551
upnp	Portable SDK for UPnP devices	1.3.1	Linux 2.6.21; UPnP 1.0	Linux		98	0.535
http	GoAhead-Webs					81	0.442
ssh			protocol 1.5			78	0.426
http	thttpd	2.24 26oct2003				72	0.393
http	Apache Tomcat/Coyote JSP engine	1.1				69	0.377
http	Netwave IP camera http config				webcam	68	0.371
http	Avtech AVN801 network camera	1.0	UPnP 1.0		webcam	63	0.344
http	PDR-M800	1.0				51	0.278
http	Microsoft IIS httpd	7.5		Windows		51	0.278
http	Ubuntu	lucid UPnP				45	0.246
telnet						39	0.213
http	Apache					39	0.213
http	Net-OS 5.xx UPnP	1.0				28	0.153
http	Microsoft IIS httpd	7.0		Windows		28	0.153
http	WangWnagSimpleServer	1.0				27	0.147
nntp	INN nntpd		posting ok			25	0.136
http	Boa HTTPd	0.94.14rc21				24	0.131
ftp	Microsoft ftpd			Windows		24	0.131
http	thttpd	2.25b 29dec2003				23	0.126
http	Apache		SSL-only mode			22	0.12
vnc	VNC		protocol 3.8			21	0.115
http	uTorrent WebUI			Windows		20	0.109
http	uc-httpd	1.0.0				20	0.109
http	Hikvision-Webs					20	0.109
http	Apache	2.2.3	(CentOS)			20	0.109