Overview of services running on Port 50000 TCP.
~197 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
http		61520	31.207
ftp	NcFTPd	47886	24.291
no match	-/-	37813	19.181
http	thttpd	11632	5.901
http	SonicWALL	3488	1.769
chat	AIM or ICQ server	2576	1.307
telnet	Alcatel/Thomson SpeedTouch DSL router admin interface	2316	1.175
ssh	OpenSSH	1963	0.996
http	Apache	1694	0.859
telnet	Sony PCS-G50 telnetd	1489	0.755
http	NetEngine Server 1.0	1484	0.753
http-proxy	3Proxy http proxy	1385	0.703
upnp	SuperMicro IPMI UPnP	1206	0.612
http	SAP J2EE Engine httpd	1006	0.51
http	lighttpd	956	0.485
telnet	Sony PCS-1 telnetd	902	0.458
telnet	Linux telnetd	842	0.427
http	MiniServ	797	0.404
http	Panasonic BB-HCM331 Network Camera http config	757	0.384
msdtc	Microsoft Distributed Transaction Coordinator	696	0.353
http	AIM	661	0.335
http	Microsoft IIS httpd	569	0.289
http	Microsoft HTTPAPI httpd	568	0.288
http	uTorrent WebUI	535	0.271
http	Boa HTTPd	441	0.224
soap	gSOAP soap	429	0.218
ssl	TLS	420	0.213
ftp	FileZilla ftpd	400	0.203
vnc	VNC	332	0.168
http	mini_httpd	298	0.151
irc-proxy	psyBNC	291	0.148
http	OpenMG Authentication Server	287	0.146
socks5		259	0.131
http	Apache Tomcat/Coyote JSP engine	230	0.117
http	Netwave IP camera http config	215	0.109
telnet	Sony PCS-G70 telnetd	184	0.093
ssh		177	0.09
http	ZNC IRC bouncer http config	175	0.089
http	Avtech AVN801 network camera	169	0.086
remoting	MS .NET Remoting services	163	0.083
upnp	Portable SDK for UPnP devices	150	0.076
ftp	Microsoft ftpd	148	0.075
http	Panasonic WV-NS202A webcam http config	140	0.071
ftp	ProFTPD	140	0.071
ftp		131	0.066
honeywell-ripsd	Honeywell ripsd power management server	125	0.063
http	DrcomServer1.0	120	0.061
http	Aimetis InfoService httpd	118	0.06
http	GoAhead-Webs httpd	117	0.059
http	Jetty	115	0.058
telnet	Sony PCS-TL30 telnetd	114	0.058
http	MMadmServ	114	0.058
eggdrop	Eggdrop IRC bot console	100	0.051
http	Allegro RomPager	98	0.05
telnet	Sony PCS-TL50 telnetd	95	0.048
http	GoAhead-Webs	92	0.047
telnet	Sony PCS-11 telnetd	91	0.046
pcanywheredata	Symantec pcAnywhere	89	0.045
http	Httpd	86	0.044
http	WangWnagSimpleServer	80	0.041
http	nginx	80	0.041
http	Panasonic webcam http config	78	0.04
mysql	MySQL	76	0.039
ftp	Pure-FTPd	76	0.039
http	Mbedthis-Appweb	73	0.037
http	D-Link DIR-300 WAP http admin	71	0.036
irc-proxy	dircproxy	69	0.035
xml		68	0.034
http	micro_httpd	68	0.034
donkey	MLDonkey multi-network P2P server	68	0.034
upnp	Intel UPnP reference SDK	67	0.034
http	GoAhead-Webs embedded httpd	67	0.034
ftp	Serv-U ftpd	65	0.033
backdoor	OptixPro backdoor	65	0.033
http	Hikvision-Webs	63	0.032
http	Polycom SoundPoint VoIP phone http config	62	0.031
ssh	Dropbear sshd	61	0.031
http	Muratec Server Ver.1.1	61	0.031
ftp	vsftpd	61	0.031
telnet		60	0.03
sybase-adaptive	Sybase Adaptive Server	60	0.03
http	NET-DK	59	0.03
http	WYM httpd	58	0.029
http	uc-httpd	58	0.029
http-proxy	Squid http proxy	55	0.028
http	MikroTik router config httpd	55	0.028
http	http server 1.0	55	0.028
vnc	RealVNC Personal	54	0.027
vnc		52	0.026
http	ver2.4 rev0	48	0.024
http	HTTP Server 1.0	48	0.024
vnc	RealVNC Enterprise	47	0.024
http	GeoVision GeoHttpServer for webcams	46	0.023
http	SAP J2EE Engine	45	0.023
http	RemotelyAnywhere remote PC management httpd	45	0.023
http	GM Streaming Server httpd	45	0.023
http	FLPS	44	0.022
http	Transas-NavTech-Server	43	0.022
http	DISKPUMP mobile download server	43	0.022
http	Buffalo AirStation http config	42	0.021
http	PDR-M800	41	0.021
arcserve	ARCserve Discovery	41	0.021
upnp	MediaTomb UPnP	40	0.02
http	Cross Web Server	39	0.02
http	TibetSystem Server 2.0	38	0.019
http	Router	38	0.019
bittorrent	Bittorrent P2P client	38	0.019
netbios-ssn		34	0.017
http	Intoto httpd	34	0.017
http	TP-LINK Router	33	0.017
pyro	Python Remote Object Nameserver	32	0.016
http	Indy httpd	32	0.016
napster	WinMX or Lopster Napster P2P client	30	0.015
http	TwistedWeb httpd	30	0.015
http	MikroTik router http config	29	0.015
smtp		28	0.014
http	Indy	27	0.014
smtp	Microsoft ESMTP	26	0.013
openvpn	OpenVPN	26	0.013
http	POSIX	26	0.013
ftp	Gene6 ftpd	25	0.013
http	Draytek Vigor ADSL router webadmin	24	0.012
vtun	Vtun Virtual Tunnel	23	0.012
http	QNAP TS-219P NAS http config	23	0.012
rifa-dvr	Rifatron DVR	22	0.011
http	Router Webserver	22	0.011
http	Microsoft IIS	22	0.011
http	DD-WRT milli_httpd	22	0.011
http	ADH-Web httpd	22	0.011
directconnect	Direct Connect P2P	22	0.011
smtp	Postfix smtpd	21	0.011
secure-socket	CA Secure Socket Adapter	21	0.011
http	TRENDnet TV-IP100 or TV-IP110 webcam display httpd	21	0.011
http	iCanWebServer	21	0.011
http	httpd 1.1	21	0.011
http	D-Link/Airlink IP webcam http config	21	0.011
http	ChipPC Extreme httpd	21	0.011
http	BBVS	21	0.011
http	Mobotix Camera http config	20	0.01
http	fec	20	0.01
http	CCcam card sharing system http config	20	0.01
http	Web	19	0.01
http	dcs-lig-httpd	19	0.01
http	CherryPy httpd	19	0.01
ssh	Bitvise WinSSHD	18	0.009
http	Sagem F@st router httpd	18	0.009
http	RapidLogic httpd	17	0.009
http	httpd	17	0.009
ftp	Synology DiskStation NAS ftpd	17	0.009
http	Milestone XProtect video surveillance http interface	16	0.008
http	Small Home Server httpd	15	0.008
http	Airlink 101 or TRENDnet TVIP-422w webcam http config	15	0.008
ftp	glFTPd	15	0.008
smtp	Symantec Enterprise Security manager smtpd	14	0.007
smtp	Microsoft Exchange smtpd	14	0.007
http	U S Software Web Server	14	0.007
http	TRENDnet TV-IP110w or TV-IP422W webcam display httpd	14	0.007
http-proxy	F5 BIG-IP load balancer http proxy	14	0.007
http	Netgear DG834G router http config	14	0.007
http	MS .NET Remoting httpd	14	0.007
giop	CORBA naming service	14	0.007
zabbix	Zabbix Monitoring System	13	0.007
teamspeak	TeamSpeak voice communication	13	0.007
rtsp		13	0.007
irc-proxy	ShroudBNC irc-proxy	13	0.007
http	WINDOWS	13	0.007
http	Thin	13	0.007
http	Gadspot/Avtech AV787 webcam http config	13	0.007
http	BlueIris-HTTP	13	0.007
ftp	Globus GridFTPd	13	0.007
flexlm	FlexLM license manager	13	0.007
shoutcast	SHOUTcast server	12	0.006
netop	NetOp Remote Control	12	0.006
http	WindWeb	12	0.006
http	Transmission BitTorrent management httpd	12	0.006
http	DVR Systems webcam http interface	12	0.006
http	BaseHTTPServer	12	0.006
audioworks	AudioWorks sound server	12	0.006
vnc	Apple remote desktop vnc	11	0.006
ssh	WeOnlyDo sshd	11	0.006
http	Ubicom	11	0.006
http	Secure Computing Sidewinder firewall http admin	11	0.006
http	SAP Web Application Server	11	0.006
http-proxy	MikroTik http proxy	11	0.006
http	Netgear DG834 router http config	11	0.006
http	AVT1100	11	0.006
http	AIM HTTP	11	0.006
ssh	Cisco SSH	10	0.005
smtp	Exim smtpd	10	0.005
http	Panasonic DVR slinger http config	10	0.005
http	Linksys router http config	10	0.005
http	HomeSeer Home Control Web Interface	10	0.005
http	AudioCodes Mediant 200 VoIP gateway http config	10	0.005