Overview of services running on Port 873 TCP.
~207 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
rsync		185615	89.448
http		10495	5.058
http	SonicWALL	3645	1.757
chat	AIM or ICQ server	1963	0.946
no match	-/-	1009	0.486
http	lighttpd	901	0.434
http	AIM	636	0.306
ssl	SSLv3	504	0.243
http	Apache	323	0.156
http	Microsoft IIS httpd	245	0.118
ssh	OpenSSH	181	0.087
tcpwrapped	BSD TCP Wrappers	147	0.071
http	thttpd	139	0.067
ssh		95	0.046
http	Apache Tomcat/Coyote JSP engine	92	0.044
http	Microsoft HTTPAPI httpd	82	0.04
http-proxy	Squid http proxy	78	0.038
http	Netwave IP camera http config	78	0.038
http	Avtech AVN801 network camera	69	0.033
http	GoAhead-Webs httpd	62	0.03
http	GoAhead-Webs	53	0.026
http	PDR-M800	50	0.024
vnc	VNC	48	0.023
telnet		47	0.023
http	Boa HTTPd	43	0.021
mongodb	MongoDB	30	0.014
http	mini_httpd	30	0.014
http	nginx	26	0.013
http	Hikvision-Webs	24	0.012
arcserve	ARCserve Discovery	23	0.011
ssh	Dropbear sshd	22	0.011
mysql	MySQL	22	0.011
http	Mbedthis-Appweb	20	0.01
pop3	Teapop pop3d	19	0.009
http	uTorrent WebUI	18	0.009
ftp	Microsoft ftpd	18	0.009
http	GeoVision GeoHttpServer for webcams	16	0.008
ftp	vsftpd	15	0.007
http	DVR Systems webcam http interface	14	0.007
http	uc-httpd	13	0.006
http-proxy	F5 BIG-IP load balancer http proxy	13	0.006
http	Gadspot/Avtech AV787 webcam http config	13	0.006
ftp		13	0.006
http	Cross Web Server	12	0.006
http	ngx_openresty	11	0.005
ftp	Pure-FTPd	11	0.005
http	AIM HTTP	10	0.005