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	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	2540	1.474
telnet	Cisco IOS telnetd	2078	1.206
http	Microsoft IIS httpd	1999	1.16
telnet		1815	1.053
chat	AIM or ICQ server	1567	0.909
ftp	MikroTik router ftpd	1366	0.792
http-proxy	EZproxy web proxy	1193	0.692
ftp	Microsoft ftpd	948	0.55
telnet	Cisco 1721 router telnetd	872	0.506
http	lighttpd	837	0.486
ftp		800	0.464
ftp	Oracle XML DB ftpd	679	0.394
http	AIM	616	0.357
ftp	vsftpd (before 2.0.8) or WU-FTPD	595	0.345
ftp	FileZilla ftpd	593	0.344
ftp	ProFTPD	507	0.294
http	Apache	462	0.268
ftp	Pure-FTPd	452	0.262
secure-socket	CA Secure Socket Adapter	447	0.259
ftp	Serv-U ftpd	411	0.238
ftp	Oracle 10g Enterprise XML DB ftpd	396	0.23
remoting	MS .NET Remoting services	336	0.195
http	MiniServ	202	0.117
ftp	vsftpd	202	0.117
vnc	VNC	187	0.108
http	Boa HTTPd	165	0.096
http	thttpd	154	0.089
http	WangWnagSimpleServer	144	0.084
http	Netwave webcam http config	123	0.071
http	DrcomServer1.0	112	0.065
ssh	OpenSSH	100	0.058
http	Apache Tomcat/Coyote JSP engine	100	0.058
http	Linux	94	0.055
vnc	RealVNC Personal	90	0.052
ftp	Gene6 ftpd	83	0.048
ssh		82	0.048
http	uTorrent utserver web interface	80	0.046
http	YAZ Z39.50 http interface	79	0.046
http	RemotelyAnywhere remote PC management httpd	66	0.038
http	GoAhead-Webs	64	0.037
http	Pacosoft	54	0.031
telnet	Cisco router telnetd	53	0.031
http	ADAM-6000	53	0.031
ftp	Synology DiskStation NAS ftpd	53	0.031
http	mini_httpd	52	0.03
http	PDR-M800	51	0.03
ftp	Personal Oracle XML DB ftpd	51	0.03
ftp	DrayTek Vigor 2820 ADSL router ftpd	44	0.026
http	uc-httpd	41	0.024
ftp	Netgear broadband router or ZyXel VoIP adapter ftpd	37	0.021
ftp	DrayTek Vigor router ftpd	36	0.021
ssh	Cisco SSH	35	0.02
telnet	the MRV Communications' LX Series Server	34	0.02
mongodb	MongoDB	32	0.019
http-proxy	Squid http proxy	31	0.018
http	Hikvision-Webs	29	0.017
http	GoAhead-Webs httpd	28	0.016
telnet	the MRV Communications' LX Series Console Server	27	0.016
http	nginx	26	0.015
http	GeoVision GeoHttpServer for webcams	26	0.015
http	Network Camera	24	0.014
nntp	INN nntpd	23	0.013
ftp	zFTPServer	23	0.013
mysql	MySQL	22	0.013
http	Allegro RomPager	22	0.013
vnc		21	0.012
http	Techno Vision Security System http config	21	0.012
http	Gateway-Webs	21	0.012
ftp	Xlight ftpd	21	0.012
rifa-dvr	Rifatron DVR	20	0.012
http	uTorrent WebUI	20	0.012
http	Icecast streaming media server	20	0.012
openvpn	OpenVPN	19	0.011
smtp	Microsoft Exchange smtpd	18	0.01
printer	Panasonic mfpscdl.exe service	18	0.01
ftp	Dreambox ftpd	17	0.01
socks-proxy	Socks4A	16	0.009
smtp	Microsoft ESMTP	16	0.009
http	Microsoft HTTPAPI httpd	16	0.009
http	Fnord httpd	16	0.009
http	World Client WDaemon httpd	15	0.009
http	Ecam	15	0.009
upnp	Portable SDK for UPnP devices	14	0.008
ssl	TLS	14	0.008
smtp	OpenBSD spamd	14	0.008
http	Mbedthis-Appweb	14	0.008
ftp	NET Disk/NetStore ftpd	14	0.008
socks5		13	0.008
smtp		12	0.007
ftp	TYPSoft ftpd	12	0.007
ftp	ACLogic CesarFTPd	12	0.007
telnet	MRV Communications, In-Reach Product Division.	11	0.006
loginserver	L2J loginserver	11	0.006
irc-proxy	psyBNC	11	0.006
http	AIM HTTP	11	0.006
ftp	WS FTPd	11	0.006
ftp	FreeBSD ftpd	11	0.006
ftp	Cerberus FTP Server	11	0.006
rtsp		10	0.006
pop3	Dovecot pop3d	10	0.006
http	Wireless Network Camera	10	0.006
http	WebServer	10	0.006
http-proxy	F5 BIG-IP load balancer http proxy	10	0.006