Overview of services running on Port 1666 TCP.
~9 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	Count	Percent
irc	Dancer ircd	3592	38.331
chat	AIM or ICQ server	1484	15.836
no match	-/-	1054	11.247
http	lighttpd	790	8.43
http		657	7.011
http	WangWnagSimpleServer	367	3.916
http	Microsoft IIS httpd	196	2.092
http	thttpd	130	1.387
http	Microsoft HTTPAPI httpd	106	1.131
p4d	Perforce configuration daemon	105	1.12
ssh	OpenSSH	84	0.896
ssh		83	0.886
http	Boa HTTPd	58	0.619
vnc	VNC	53	0.566
telnet		46	0.491
arcserve	ARCserve Discovery	35	0.373
nntp	INN nntpd	27	0.288
ftp	Microsoft ftpd	22	0.235
directconnect	Direct Connect P2P	22	0.235
ftp	FileZilla ftpd	21	0.224
http	nginx	19	0.203
mysql	MySQL	18	0.192
http	GeoVision GeoHttpServer for webcams	16	0.171
ftp		16	0.171
smtp	Microsoft ESMTP	15	0.16
ftp	ProFTPD	15	0.16
backdoor	PsychoPhobia backdoor	15	0.16
ftp	Pure-FTPd	13	0.139
ssl	TLS	12	0.128
smtp		11	0.117
http	World Client WDaemon httpd	11	0.117
http	Panasonic webcam http config	11	0.117
ftp	Serv-U ftpd	11	0.117
ftp	vsftpd (before 2.0.8) or WU-FTPD	10	0.107