Overview of services running on Port 2600 TCP.
~12 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	Info	OS	Devicetype	Count	Percent
irc	Dancer ircd					3688	30.616
no match						1536	12.751
chat	AIM or ICQ server					1443	11.979
telnet	Cisco IOS telnetd			IOS	switch	1281	10.634
telnet						689	5.72
http						593	4.923
http	lighttpd	1.4.29				448	3.719
http	lighttpd	1.4.19				371	3.08
http	Microsoft IIS httpd					183	1.519
irc-proxy	psyBNC	2.3.2-9				106	0.88
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		106	0.88
http	WangWnagSimpleServer	1.0				85	0.706
ssh			protocol 1.5			82	0.681
vnc	VNC		protocol 3.8			73	0.606
http	thttpd	2.24				73	0.606
http	Microsoft IIS httpd	5.0		Windows		61	0.506
http	Boa HTTPd	0.94.14rc21				54	0.448
ftp	Microsoft ftpd			Windows		50	0.415
telnet	Cisco 1721 router telnetd			IOS	router	44	0.365
bittorrent	Bittorrent P2P client					41	0.34
arcserve	ARCserve Discovery					36	0.299
smtp	Symantec Enterprise Security manager smtpd					32	0.266
telnet	the MRV Communications' LX Series Server					30	0.249
http	thttpd	2.25b				26	0.216
nntp	INN nntpd		posting ok			25	0.208
http	thttpd					25	0.208
http	lighttpd	1.4.20				23	0.191
vnc	VNC		protocol 3.6			22	0.183
telnet	the MRV Communications' LX Series Console Server					20	0.166