Overview of services running on Port 5550 TCP.
~36 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
arcserve	ARCserve Discovery	20982	57.865
irc	Dancer ircd	4058	11.191
no match	-/-	2915	8.039
chat	AIM or ICQ server	2329	6.423
ssl	TLSv1	1743	4.807
http		592	1.633
ssl	SSLv3	515	1.42
http	lighttpd	405	1.117
http	Microsoft IIS httpd	240	0.662
ssh	OpenSSH	229	0.632
http	thttpd	212	0.585
smtp		178	0.491
http	Boa HTTPd	169	0.466
http	GoAhead-Webs httpd	155	0.427
http	Microsoft HTTPAPI httpd	140	0.386
vnc	VNC	134	0.37
irc-proxy	psyBNC	122	0.336
ssh		95	0.262
http	Apache	89	0.245
http	Hikvision-Webs	58	0.16
ftp	Microsoft ftpd	54	0.149
telnet		42	0.116
http-proxy	Squid http proxy	41	0.113
vnc		35	0.097
http	Apache Tomcat/Coyote JSP engine	32	0.088
mysql	MySQL	31	0.085
vnc	RealVNC Enterprise	30	0.083
http	D-Link router/Airlink NAS http config	28	0.077
http	nginx	23	0.063
smtp	Microsoft ESMTP	19	0.052
ftp	vsftpd	19	0.052
vnc	RealVNC Personal	18	0.05
ftp	FileZilla ftpd	17	0.047
ftp		17	0.047
remoting	MS .NET Remoting services	15	0.041
http	uTorrent WebUI	15	0.041
telnet	Allied Telesis x900-series switch telnetd	14	0.039
smtp	Microsoft Exchange smtpd	14	0.039
http	Jetty	14	0.039
http-proxy	F5 BIG-IP load balancer http proxy	13	0.036
http	Boa httpd	13	0.036
ftp	Pure-FTPd	13	0.036
ftp	ProFTPD	13	0.036
http	http server 1.0	12	0.033
http	httpd 1.1	12	0.033
xml		11	0.03
http	WYM httpd	11	0.03
vnc	Apple remote desktop vnc	10	0.028
time		10	0.028
rtsp		10	0.028
http	wg_httpd	10	0.028