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	Version	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	AIM	1.0	636	0.306
ssl	SSLv3		504	0.243
http	lighttpd	1.4.29	419	0.202
http	lighttpd	1.4.19	386	0.186
tcpwrapped	BSD TCP Wrappers		147	0.071
http	Microsoft IIS httpd	6.0	142	0.068
ssh			95	0.046
http	Apache Tomcat/Coyote JSP engine	1.1	92	0.044
http	Microsoft HTTPAPI httpd	2.0	82	0.04
http	Netwave IP camera http config		78	0.038
http	Avtech AVN801 network camera	1.0	69	0.033
http	lighttpd	1.4.28	65	0.031
http	GoAhead-Webs httpd		62	0.03
http	Apache		59	0.028
ssh	OpenSSH	4.5p1	54	0.026
http	GoAhead-Webs		53	0.026
http	PDR-M800	1.0	50	0.024
vnc	VNC		48	0.023
telnet			47	0.023
http	thttpd	2.24 26oct2003	42	0.02
http	thttpd	2.24	41	0.02
http	Microsoft IIS httpd		37	0.018
http	Apache	2.2.14	35	0.017
http	Apache	2.2.3	32	0.015
http	mini_httpd	1.19 19dec2003	28	0.013
http	Boa HTTPd	0.94.14rc21	28	0.013
http	Microsoft IIS httpd	7.5	27	0.013
http	Apache	2.2.22	27	0.013
http-proxy	Squid http proxy	2.7.STABLE9	25	0.012
http	Hikvision-Webs		24	0.012
arcserve	ARCserve Discovery		23	0.011
http	Apache	2.2.16	22	0.011
http-proxy	Squid http proxy	2.6.STABLE12	21	0.01
pop3	Teapop pop3d	0.3.8	19	0.009
http	Mbedthis-Appweb	2.0.4	19	0.009
ssh	Dropbear sshd	0.52	18	0.009
mongodb	MongoDB	7	18	0.009
http	uTorrent WebUI		18	0.009
http	thttpd		17	0.008
http	Microsoft IIS httpd	7.0	17	0.008
ftp	Microsoft ftpd		17	0.008
http	GeoVision GeoHttpServer for webcams		16	0.008
ssh	OpenSSH	5.5p1 Debian 6	15	0.007
ssh	OpenSSH	4.3	15	0.007
http	Microsoft IIS httpd	5.1	15	0.007
http	Apache	2.2.15	15	0.007