Overview of services running on Port 27001 TCP.
~22 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
flexlm	FlexLM license manager	7893	35.244
no match	-/-	5462	24.389
irc	Dancer ircd	4066	18.156
chat	AIM or ICQ server	2342	10.458
ssh	OpenSSH	541	2.416
http	lighttpd	414	1.849
http		394	1.759
http	Microsoft IIS httpd	177	0.79
http	Microsoft HTTPAPI httpd	140	0.625
ssh		97	0.433
irc-proxy	psyBNC	91	0.406
vnc	VNC	66	0.295
telnet		49	0.219
http	thttpd	45	0.201
mysql	MySQL	33	0.147
http	nginx	33	0.147
http	Boa HTTPd	33	0.147
http	Jetty	27	0.121
ftp	Microsoft ftpd	25	0.112
ftp		25	0.112
ssh	Dropbear sshd	21	0.094
smtp	Microsoft ESMTP	19	0.085
ftp	FileZilla ftpd	19	0.085
ftp	Pure-FTPd	18	0.08
arcserve	ARCserve Discovery	18	0.08
ftp	ProFTPD	17	0.076
msrpc	Microsoft Windows RPC	13	0.058
vnc		12	0.054
smtp		12	0.054
telnet	Allied Telesis x900-series switch telnetd	11	0.049
netbios-ssn		11	0.049
smtp	Microsoft Exchange smtpd	10	0.045