Overview of services running on Port 2100 TCP.
~172 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
no match	-/-	-/-	136734	79.324
irc	Dancer ircd		3370	1.955
http	SonicWALL		3274	1.899
http			3191	1.851
ftp	Oracle Enterprise XML DB ftpd	9.2.0.1.0	2131	1.236
telnet	Cisco IOS telnetd		2078	1.206
telnet			1815	1.053
http	Microsoft IIS httpd	6.0	1771	1.027
chat	AIM or ICQ server		1567	0.909
http-proxy	EZproxy web proxy		1193	0.692
ftp	Microsoft ftpd		889	0.516
telnet	Cisco 1721 router telnetd		872	0.506
ftp			800	0.464
http	AIM	1.0	616	0.357
ftp	vsftpd (before 2.0.8) or WU-FTPD		595	0.345
ftp	Pure-FTPd		452	0.262
secure-socket	CA Secure Socket Adapter		447	0.259
http	lighttpd	1.4.29	393	0.228
http	lighttpd	1.4.19	387	0.225
ftp	Oracle XML DB ftpd	9.2.0.1.0	381	0.221
ftp	Oracle 10g Enterprise XML DB ftpd	10.1.0.2.0	366	0.212
remoting	MS .NET Remoting services		336	0.195
ftp	Oracle Enterprise XML DB ftpd	9.2.0.4.0	334	0.194
ftp	vsftpd	2.0.8 or later	197	0.114
ftp	Serv-U ftpd	6.4	196	0.114
http	MiniServ	0.01	189	0.11
vnc	VNC		187	0.108
ftp	Oracle XML DB ftpd		183	0.106
ftp	MikroTik router ftpd	4.17	173	0.1
ftp	FileZilla ftpd	0.9.41 beta	164	0.095
ftp	MikroTik router ftpd	5.14	156	0.091
ftp	MikroTik router ftpd	5.19	147	0.085
http	WangWnagSimpleServer	1.0	144	0.084
ftp	MikroTik router ftpd	5.18	143	0.083
http	Netwave webcam http config		123	0.071
http	Apache		122	0.071
http	Boa HTTPd	0.94.14rc21	119	0.069
http	DrcomServer1.0		112	0.065
http	Apache Tomcat/Coyote JSP engine	1.1	100	0.058
ftp	FileZilla ftpd	0.9.37 beta	96	0.056
http	Linux	2.x UPnP	94	0.055
ftp	ProFTPD		93	0.054
http	Microsoft IIS httpd	7.5	91	0.053
vnc	RealVNC Personal		90	0.052
ssh			82	0.048
http	uTorrent utserver web interface		80	0.046
http	thttpd	2.24 26oct2003	77	0.045
ftp	FileZilla ftpd	0.9.40 beta	77	0.045
ftp	FileZilla ftpd	0.9.39 beta	74	0.043
http	Microsoft IIS httpd		70	0.041
ftp	MikroTik router ftpd	2.9.27	68	0.039
ftp	ProFTPD	1.3.3a	67	0.039
http	GoAhead-Webs		64	0.037
ftp	MikroTik router ftpd	5.17	62	0.036
ftp	MikroTik router ftpd	4.11	61	0.035
ftp	Microsoft ftpd	5.0	59	0.034
http	thttpd	2.25b 29dec2003	56	0.032
ftp	Serv-U ftpd	6.3	56	0.032
ftp	Oracle XML DB ftpd	9.2.0.4.0	55	0.032
http	Pacosoft		54	0.031
telnet	Cisco router telnetd		53	0.031
http	ADAM-6000	8.1.0019	53	0.031
ftp	Synology DiskStation NAS ftpd		53	0.031
ftp	Gene6 ftpd	3.10.0 build 2	52	0.03
http	PDR-M800	1.0	51	0.03
http	mini_httpd	1.19 19dec2003	51	0.03
ftp	MikroTik router ftpd	5.7	51	0.03
http	Apache	2.2.14	48	0.028
ftp	ProFTPD	1.3.1	48	0.028
ftp	Personal Oracle XML DB ftpd	9.2.0.1.0	48	0.028
ftp	FileZilla ftpd	0.9.34 beta	47	0.027
ftp	Oracle Enterprise XML DB ftpd	9.2.0.6.0	45	0.026
ftp	MikroTik router ftpd	3.30	45	0.026
ftp	DrayTek Vigor 2820 ADSL router ftpd	1.0	44	0.026
http	Microsoft IIS httpd	7.0	43	0.025
ftp	Oracle XML DB ftpd	9.2.0.6.0	43	0.025
http	uc-httpd	1.0.0	41	0.024
ftp	ProFTPD	1.3.0	38	0.022
http	Apache	2.2.3	37	0.021
ftp	Netgear broadband router or ZyXel VoIP adapter ftpd	1.0	37	0.021
ftp	MikroTik router ftpd	5.11	37	0.021
ftp	ProFTPD	1.3.2c	36	0.021
ftp	DrayTek Vigor router ftpd	1.0	36	0.021
ssh	Cisco SSH	1.25	35	0.02
telnet	the MRV Communications' LX Series Server		34	0.02
ftp	ProFTPD	1.3.3c	34	0.02
ftp	FileZilla ftpd	0.9.33 beta	31	0.018
ftp	Oracle 10g Enterprise XML DB ftpd	10.1.0.3.0	30	0.017
ftp	MikroTik router ftpd	4.14	30	0.017
http	RemotelyAnywhere remote PC management httpd	8.0.668	29	0.017
http	Hikvision-Webs		29	0.017
http	Apache	2.2.22	29	0.017
ftp	Serv-U ftpd	6.0	29	0.017
ftp	MikroTik router ftpd	5.8	29	0.017
ftp	MikroTik router ftpd	5.15	29	0.017
http	GoAhead-Webs httpd		28	0.016
ftp	MikroTik router ftpd	5.16	28	0.016
telnet	the MRV Communications' LX Series Console Server		27	0.016
http	GeoVision GeoHttpServer for webcams		26	0.015
ftp	ProFTPD	1.3.3d	26	0.015
ftp	MikroTik router ftpd	5.5	26	0.015
ftp	MikroTik router ftpd	5.0	26	0.015
ftp	MikroTik router ftpd	5.4	25	0.015
http	Network Camera		24	0.014
ftp	MikroTik router ftpd	5.6	24	0.014
nntp	INN nntpd		23	0.013
http	Apache	1.3.28	23	0.013
ftp	MikroTik router ftpd	4.10	23	0.013
http	Apache	2.2.15	22	0.013
ftp	ProFTPD	1.3.4a	22	0.013
ftp	MikroTik router ftpd	5.2	22	0.013
ftp	FileZilla ftpd	0.9.36 beta	22	0.013
vnc			21	0.012
http	Techno Vision Security System http config	2.0	21	0.012
http	Gateway-Webs		21	0.012
http	Boa HTTPd	0.94.13	21	0.012
ftp	MikroTik router ftpd	2.9.50	21	0.012
rifa-dvr	Rifatron DVR		20	0.012
http	uTorrent WebUI		20	0.012
http	Icecast streaming media server		20	0.012
ftp	ProFTPD	1.3.0a	20	0.012
ftp	Oracle Enterprise XML DB ftpd	9.2.0.5.0	20	0.012
openvpn	OpenVPN		19	0.011
http	Apache	2.2.16	19	0.011
ftp	ProFTPD	1.3.3	19	0.011
ftp	FileZilla ftpd	0.9.31 beta	19	0.011
printer	Panasonic mfpscdl.exe service		18	0.01
http	lighttpd	1.4.20	18	0.01
http	Apache	2.0.53	18	0.01
http	Apache	1.3.37	18	0.01
ftp	ProFTPD	1.3.3e	18	0.01
ftp	Gene6 ftpd	3.8.0 build 34	18	0.01
http	Microsoft IIS httpd	5.1	17	0.01
ftp	ProFTPD	1.3.3g	17	0.01
ftp	Dreambox ftpd		17	0.01
socks-proxy	Socks4A		16	0.009
http	Fnord httpd		16	0.009
http	Apache	2.2.9	16	0.009
ftp	MikroTik router ftpd	5.9	16	0.009
http	Ecam	1.92	15	0.009
ftp	Serv-U ftpd	6.2	15	0.009